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AGMA

INDUSTRY NEWS | 2025-02-27

AGMA Foundation Scholarship Application Submission Period is Open

Open to students interested in a career in the gear industry, and/or power transmission as it relates to the gear industry.
Applicants must be enrolled or recently accepted as full- or part-time students in a nationally accredited program. 

FEATURE ARTICLES | 2024-12-12

108 Years Old Is the New 30

It was a busy year for the gear industry. Large and small companies had to navigate the interest rates, tariffs, supply chain disruptions, labor shortages, and the unknown economic outlook with an election year in the U.S. Leaders that normally would be brainstorming their five-year strategic plans had to get comfortable with a day-to-day strategy. As each quarter ended, however, AGMA witnessed resiliency, innovation, collaboration, and even quite a bit of growth for some sectors—it was an exciting year to visit members in person.

FRONTIERS | 2024-12-11

Update: AGMA Emerging Technology Committees

Before diving into the latest committee developments, I want to remind everyone about the 2023 Emerging Technology Webinar Series, available on-demand until December 31. (Don’t miss this valuable resource before it’s removed to make room for our 2025 webinar series.) 

TECH TALK | 2024-08-15

What the Heck Is an FTM?

If you are a true gear geek, you are probably aware of AGMA’s Fall Technical Meeting (FTM). However, we have true gear geeks attending the FTM for the first time each year, and we are thrilled to see that!

FRONTIERS | 2024-07-23

AGMA Live Events Advance Understanding of Emerging Technologies

I just returned from two information-packed days in Detroit, running the 2024 AGMA Emerging Technology Forum and the AGMA Technical Committee meeting on standards development for electric vehicle technology. AGMA provided attendees with high-level presentations on materials, advanced IIoT experiences, interactive sessions on the future of robots, and initial standards work for EV technology.

TECH TALK | 2024-07-23

Seeking Standards Experts

AGMA wants you to be involved in gear standards development. Committee meetings are a great place to network and collaborate with experts in the field, broaden your knowledge, capture technical expertise in writing, refine the standards you use, and see how your influence helps shape best practices throughout America and around the world. We are especially looking for experts to join four new standardization projects.

TECH TALK | 2024-06-12

New Committee Restructuring—Version 2!

In 2023, the Technical Division Executive Committee (TDEC) worked on a technical committee restructuring that replaced the standing, topic-specific committees with working groups, which would focus only on an active project and fold when the project was completed. Due to feedback received on the change, the TDEC took a step back and re-evaluated the restructuring. This led to a new committee-based structure that takes the good parts of project working groups and merges them with the good parts of technical committees. The committees are consolidated and include sub-working groups to perform the work on information sheets and standards.

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VOICES | 2024-05-10

How It All Started

My family company, Cadillac Machinery, was a used machinery dealer specializing gear machinery, especially bevel gear equipment, so we knew first-hand how unique and sometimes insular the gear industry was. As a member of AGMA, I often attended AGMA events, including the Fall Technical Meeting, where tremendous knowledge was presented, year after year, about the latest research, technology and manufacturing approaches for gears.

VOICES | 2024-05-10

Escaping the Dark Ages

The inaugural issue of Gear Technology marked a significant change in the industry. I was 13 years into my career, working at my third company and in my fifth year on AGMA’s Helical Gear Rating Committee. Back then, few engineers moved around; you started at a gear company, were indoctrinated in their way of doing things, and hoped to advance by making very incremental changes to the “old family recipe.”

FEATURE ARTICLES | 2024-05-10

Celebrating 40 Years

Gear Technology began with the May/June 1984 issue. Forty years later, we’re still going strong! Please join us in looking back at some of our milestones and celebrating what makes this publication truly unique in the marketplace.

TECH TALK | 2024-05-10

Two Newly Revised AGMA Standards

AGMA is pleased to announce the publication of two new revisions: ANSI/AGMA 2116-B24, Evaluation of Double Flank Testers for Radial Composite Measurement of Gears, written by the AGMA Gear Accuracy Committee, and ANSI/AGMA 6008-B24, Specifications for Powder Metallurgy Gears written by the AGMA Powder Metallurgy Committee.

INDUSTRY NEWS | 2024-05-10

AGMA Wins First Place in Trade Show Award for MPT Expo

The American Gear Manufacturers Association (AGMA) was presented with the Trade Show Executive’s Fastest 50 Grand Award in the “Fastest-Growing Show by Percentage Growth in Total Attendance in 2023” category on May 9 at the Fastest 50 Awards & Summit in Las Vegas.

PUBLISHER'S PAGE | 2024-04-09

Which Half Are You In?

OK, audience. I’m going to divide you into two groups. Everybody whose company is a member of AGMA, please move over to the left-hand side of the room, and everybody else, please move over to the right.

INDUSTRY NEWS | 2024-03-15

AGMA Announces New Board of Directors and Officers at 2024 Annual Meeting

The American Gear Manufacturers Association (AGMA) announces changes to its Board of Directors at the AGMA Members' Meeting during the Annual Meeting in Napa, CA. “AGMA would not be where it is today without the passion and diligence of its Board of Directors,” said Matthew E. Croson, President, AGMA. “I want to thank the outgoing Directors for their wisdom and guidance during the pandemic and for helping AGMA maneuver through the tough economic conditions that followed. I have full confidence in our new Directors as AGMA focuses on programs to improve the gear industry at home and forge new partnerships with like-minded associations and organizations abroad.”

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INDUSTRY NEWS | 2024-03-15

AGMA Foundation Announces New Board of Trustee Appointments at 2024 Annual Meeting

The AGMA Foundation announces changes to its Board of Trustees at the AGMA Members' Meeting during the 2024 Annual Meeting in Napa, CA. “The Foundation continues to serve the gear industry by providing funding through their four pillars: education, workforce, scholarship, and emerging technology,” stated Executive Director, Mary Ellen Doran. “These new Trustees will help us make key decisions in how we can have a greater impact on the workforce over the next three years. I look forward to their contributions.”

EVENT | 2024-02-09

Women in Manufacturing: Assuring Quality for Decades to Come

Wenzel America and Fox Valley Metrology understand the importance of quality and excellence in the manufacturing industry. In this webinar, attendees will hear from the experts on the following subjects:

Advocacy in your career to promote growth and getting that “seat at the table.

Tips to be productive, quality-focused, and intentional at your job.

Important networking and mentoring suggestions that will enhance your industry relationships.

The webinar will be hosted by Rebecca Brinkley, AGMA.

INDUSTRY NEWS | 2024-01-12

AGMA Hires New VP, Technical Division and Promotes Three Employees

The American Gear Manufacturers Association (AGMA) is proud to announce the hiring of Todd Praneis as Vice President, Technical Division. In addition, three AGMA employees—Courtney Caroll, Robin McWilliams, and Jess Oglesby—have been promoted.

INDUSTRY NEWS | 2024-01-12

AGMA Offers New Electric Vehicle Course

You've been asking for a course that focuses on electric vehicles (EVs) and we're happy to oblige! Introducing the all-new EV Automotive Transmission System Design class. Due to demand, seats for this course are projected to fill quickly, so register ASAP to ensure you get a spot!

EVENT | 2023-11-09

IPTEX 2024

IPTEX 2024 (Pune, India) is an important event for all relevant stakeholders in automobile, aerospace, or energy as well as manufacturers, buyers, partners, and consultants. Focus industries include mechanical power transmission, electrical power transmission, linear motion drives, fluid power and IoT/smart technology. IPTEX will provide a consistent channel of communication to the members of this industry to come together under one roof and participate in technical seminars, share knowledge and expertise with industry leaders and to be a part of discussion on policy codes, standards and challenges faced by the industry.

EVENT | 2023-11-09

AGMA Gearbox CSI

This AGMA live online course examines individual failure modes and the failure scenarios that lead to actual system failure, an essential skill to designing gear/bearing systems that will operate properly for their full design life. In this course, AGMA will define and explain the nature of many gear and bearing failures and discuss and describe various actual failure scenarios. In addition, a detailed primer on bearing technology prefaces the failure scenario discussions. Attendees will gain a better understanding of various types of gears and bearings. Learn about the limitation and capabilities of rolling element bearings and the gears that they support.  Grasp an understanding of how to properly apply the best gear-bearing combination to any gearbox from simple to complex.

INDUSTRY NEWS | 2023-10-26

2023 Motion + Power Technology Expo Welcomes the Power Transmission Industry Back to Detroit

The American Gear Manufacturers Association’s (AGMA) Motion + Power Technology Expo (MPT Expo) hosted 2,268 attendees and 163 exhibitors last week at the Huntington Place Convention Center in Detroit, Michigan. AGMA also hosted its annual Fall Technical Meeting (FTM) and was co-located with ASM International’s Heat Treat and IMAT conference. Together, the events attracted 4,482 attendees. 

TECH TALK | 2023-10-05

Project-Based Groups for Standards Development

AGMA’s standards development process has been reorganized from a committee-based structure to a project-based format. This change means that AGMA will no longer have standing, topic-specific committees. Instead, project working groups will be formed to develop and deliver project-specific objectives. The group will be dissolved at the end of the project. The change will enable the AGMA’s Technical Division Executive Committee (TDEC) to pivot its resources in a timely manner to meet and address the ever-changing needs and challenges of the gearing industry.

INDUSTRY NEWS | 2023-09-05

AGMA Announces Technical Committee Restructuring

The American Gear Manufacturers Association (AGMA) Technical Division Executive Committee, TDEC, announces a minor restructuring of AGMA technical committees to better serve the industry. The new structure will replace existing topic-specific committees with project-specific working groups that will be formed to develop the deliverable of each project. 

INDUSTRY NEWS | 2023-06-28

AGMA President Matt Croson on the Manufacturing Talks Podcast

There are countless amazing stories that emerge from the manufacturing world—and Manufacturing Talks, hosted by Jim Vinoski, helps draw those stories into the light of day. As Jim states, "Manufacturing is where the rubber meets the road. There's no hiding. You're either making good products people will buy for enough to keep you in business, or you're not. Period." Nowhere is that more evident than in the gear industry. Check out Episode 51 with Matt Croson, President of the American Gear Manufacturers Association, sharing all about what the AGMA does.

VOICES | 2023-02-13

AGMA STRIVES TO CONNECT & ENGAGE

From 2020 to 2022 I had the honor of serving as the AGMA Chair. As I close the two-year service commitment, I have been asked by several people: What has AGMA accomplished recently, and where is the 107-year-old trade association heading? This question is easy and difficult to answer all at the same time.

INDUSTRY NEWS | 2023-02-13

State of the Gear Industry Perspectives: Forest City Gear

State of the Gear Industry Perspectives takes an in-depth look at the challenges and opportunities in gear manufacturing today and in the future. Our seventh installment online is an interview with Kika Young, president, and Jared Lyford, director of manufacturing operations at Forest City Gear (FCG). 

TECH TALK | 2023-02-13

2022 AGMA Technical Committee Activity

Thanks to our many hardworking volunteer committee members, 2022 was a productive year for the AGMA Technical Division with the publication of two new and three revised information sheets. Looking ahead to 2023, many AGMA technical committees plan to meet face to face for the first time since 2019, and they will continue work on ten projects.

EVENT | 2023-01-17

AGMA Gearbox CSI

A good understanding of individual failure modes and the failure scenarios that led to the actual system failure is an essential skill to designing gear/bearing systems that will operate properly for their full design life. In this course, we will define and explain the nature of many gear and bearing failures and we will also discuss and describe various actual failure scenarios. In addition, a detailed primer on bearing technology prefaces the failure scenario discussions. You will gain a better understanding of various types of gears and bearings. Learn about the limitation and capabilities of rolling element bearings and the gears that they support.  Grasp an understanding of how to properly apply the best gear-bearing combination to any gearbox from simple to complex.

EVENT | 2023-01-17

AGMA Gear Manufacturing and Inspection

While function and rating are important factors in a successful gear design, to be truly optimal and successful, the gear designer must also design the gears to be manufactured and inspected. In this course, therefore, we will address key factors in a wide variety of manufacturing and inspection processes to enable the gear designer to better design optimal gears considering both rating and the necessary manufacturing and inspection processes to produce the gears as designed. We will also help the designer to understand how to interpret inspection data so that they can ensure that the gears meet the design. To be clear, this is not a course in how to operate the various machines. Rather it addresses the design provisions that are required to allow the gears to be optimally manufactured and inspected. The learner will develop a broad understanding of the methods used to manufacture and inspect gears, as well as interpret how the resultant information can be applied and interpreted in the design process.

EVENT | 2022-09-22

AGMA Involute Spline Design & Rating

This course will address both geometry and rating of involute splines of various types. The types of spline joints and their applications will be discussed. Spline configuration variations, including half depth, full depth, and special function designs, will be addressed. Both fixed and flexible spline configurations will be examined in terms of usage and design. Lubrication methods, including grease, oil bath, and flowing oil, as well as coatings appropriate for various spline applications, are examined. Shear and compressive stress rating methods are discussed with analyses methodology presented in both equation and graphical methodology via various rating charts.

EVENT | 2022-09-22

AGMA Operator Precision Gear Grinding

Explore gear grinding processes, machine kinematics and set-up, pitfalls, failures and expectations related to finish ground gearing.  Learn definitions of gearing component features, process steps from blanking, through heat treatment to finished part ready to ship.  Study aspects of Quality Assurance, Inspection Documentation and corrective actions for measured non-conformances.  Understand pre-heat treat, heat treatment and post-heat treatment operations including the hows and whys to produce finished gears that conform and perform to end user expectations.

TECH TALK | 2022-08-30

First Gear: The Roots of the Fall Technical Meeting

A brief history of AGMA's Fall Technical Meeting, along with a discussion of why this year's meeting (Oct 17-19 in Chicago) is as relevant as ever.

EVENT | 2022-06-01

AGMA Operator Hobbing & Shaper Cutting

Learn and understand fundamentals of gear manufacturing. Acquire knowledge and understanding of gear nomenclature, hobbing and shaping of spur and helical gears, and splines. Learn and understand hobber and shaper machine set-up, as well as gear tooth element inspection. 

EVENT | 2022-06-01

AGMA Gear Materials

Learn what is required for the design of an optimum gear set and the importance of the coordinated effort of the gear design engineer, the gear metallurgist, and the bearing system engineer. Investigate gear-related problems, failures and improved processing procedures. Class hours are from 8:00 am - 5:00 pm.

TECHNICAL ARTICLES | 2022-05-19

Defining the Tooth Flank Temperature in High-Speed Gears

The objective of this paper is to improve the methodology for determining the tooth flank temperature. Two methods are proposed for assessing scuffing risk when applying AGMA 925 for high-speed gears. Both methods provide similar results.

PUBLISHER'S PAGE | 2022-05-18

Up Close and Personal

After more than two years of COVID isolation, it feels good to be getting out of our bunkers and interacting with people again. Last month, I had the great pleasure of attending the AGMA Annual Meeting, where executives from member companies got together in person for the first time since 2019. The 2020 meeting was canceled at the last minute due to COVID. Last year’s meeting was held virtually, with an electronic meeting room and videoconference presentations. But this year felt like a return to normal.

TECH TALK | 2022-04-25

High-Speed Invitation

EVENT | 2022-04-13

AGMA Gear Heat Treatment Operator/Operations

This course provides the heat treat operator and operations team, the means to perform the heat treatment of steel gears in a manner that meets the AGMA and customer requirements in a safe and efficient manner. 

EVENT | 2022-04-13

AGMA Basic Gear Inspection for Operators

This course will provide a solid foundation for anyone going into gear inspection. Learn the common, current and basics of the tools and techniques used to measure and inspect gears. Understand the four main categories by which a gear is evaluated and classified.

INDUSTRY NEWS | 2022-04-04

AGMA Announces New Board of Directors

The American Gear Manufacturers Association (AGMA) announced the changing of its board of directors at the 2022 AGMA Annual Meeting held March 31 through April 2 in Palm Beach Gardens, Florida.

VOICES | 2022-02-22

By the Numbers

It’s 2022! AGMA’s 106th year. Numbers are interesting things; here are a few pertinent ones for AGMA.

INDUSTRY NEWS | 2022-01-31

AGMA's Leah Lewis Elected Leadership Position with PCMA Capital Chapter

The American Gear Manufacturers Association (AGMA) is pleased to announce that Leah Lewis, meetings director, CMP, DES, has been selected...
INDUSTRY NEWS | 2022-01-25

AGMA Offers Detailed Gear Design Course

There is a distinct difference between “designing” a gear and “optimizing” a gear design. In this course, we will...
INDUSTRY NEWS | 2021-11-04

AGMA FTM 2022 Call for Papers

Each year, authors selected by AGMA write peer-reviewed technical papers on topics relevant to the gear industry. These may include subje...
EVENTS | 2021-11-01

Calendar

Calendar of early 2022 events
ASK THE EXPERT | 2021-09-01

The Undercut Phenomenon

“It appears that undercut can be eliminated in some cases but in most cases, the elimination of undercut, for example by increasing the root fillet radii of a pinion, results in performance problems in the operation with its mate. My question is, when can I eliminate undercut and why is it not possible in most cases?”
INDUSTRY NEWS | 2021-08-25

AGMA's Emerging Technology Efforts - What's Next?

The goal of the AGMA Emerging Technology committees is to identify, investigate and inform AGMA members of emerging technologies that may...
INDUSTRY NEWS | 2021-08-16

AGMA Announces Latest Members to Join the Organization

AGMA has recently announced new memberships from esco GmbH, Wenzel America, Engineering Drive Solutions, Toyota Material Handling and Uni...
INDUSTRY NEWS | 2021-08-01

Industry News

The latest news AGMA Foundation, DVS Technology Group, Mitutoyo and more.
INDUSTRY NEWS | 2021-07-19

AGMA Foundation Welcomes New Director

The AGMA Foundation announced Mary Ellen Doran as the Foundation’s new executive director. She assumed the role in June 2021.The ap...
VOICES | 2021-07-01

Building Connections at MPT Expo

Building Connections at MPT Expo.
INDUSTRY NEWS | 2021-05-26

AGMA Examines Robot Integration in Gear Manufacturing

AGMA presents its latest webinar "How Software Can Level the Playing Field for Robot Integration" on Wednesday, June 2, from 1:...
INDUSTRY NEWS | 2021-05-21

AGMA 2021 SRN Event Includes Clemson University SCE&G Energy Innovation Center Tour

The AGMA 2021 Strategic Resources Network Event, June 9-11 in Charleston, SC., offers a terrific lineup for future leaders starting with ...
INDUSTRY NEWS | 2021-05-05

AGMA Electric Drive Technology Committee Publishes EV White Paper

The AGMA Electric Drive Technology Committee released a white paper today titled, “A Gearing-Centric Snapshot of the EV Space&rdquo...
INDUSTRY NEWS | 2021-05-04

AGMA Releases New Publications by ISO Central

The AGMA Technical Division recently announced the following publications by ISO Central:ISO/TS 10300-20:2021, Calculation of load capaci...
VOICES | 2021-05-01

Three Things Needed from Every Power Transmission Company

In our association, we might be suppliers, partners, customers or competitors, but in the end, we are one industry — and now is the time when we need to come together and move the industry forward.”
INDUSTRY NEWS | 2021-04-13

AGMA Announces New Publications

The AGMA Technical Division recently announced the following publications: ANSI/AGMA 6000-C20, Specification for Measurement of Line...
INDUSTRY NEWS | 2021-04-07

AGMA Foundation Scholarship Applications are due July 1, 2021

COVID-19 fundraising setbacks have not stopped the AGMA Foundation’s support of the gear industry workforce. Scholarships of up to ...
INDUSTRY NEWS | 2021-03-29

AGMA Offers Emerging Technology Webinar Series

The American Gear Manufacturers Association (AGMA) is now offering emerging technology webinars starting in April. The webinar series wil...
INDUSTRY NEWS | 2021-03-23

AGMA Welcomes New Board Members

The American Gear Manufacturers Association (AGMA) announced Greg Schulte, president of Bonfiglioli USA as the new AGMA chair of the boar...
FEATURE ARTICLES | 2021-03-01

Heat Treat and Metal Education Opportunities

AGMA and ASM International offer a diverse range of steel, metallurgy and heat treat courses both in-person and virtually in 2021.
INDUSTRY NEWS | 2021-03-01

Industry News

The latest news from AGMA, EMAG Group, Star Cutter, MHI and more.
INDUSTRY NEWS | 2021-02-12

A Lesson in Workholding Fundamentals

Evolution of a Real-World Workholding Solution

GEAR TALK WITH CHUCK | 2021-02-03

Can We Make It Here Anymore?

There has been renewed discussion of the “Buy American” mandates recently. AGMA has a long history on this topic and succe...

INDUSTRY NEWS | 2021-01-26

AGMA Offers Online Course on Involute Spline Design and Rating

This virtual course will take place March 25, 2021 from 9:00 - 5:00 pm ET. It will address both geometry and rating of involute splines o...
GEAR TALK WITH CHUCK | 2021-01-20

No Stupid Questions

One of the pleasures of being Gear Technology’s official blogger is receiving the occasional phone call or e-mail...

GEAR TALK WITH CHUCK | 2021-01-15

Papers Please!

If you receive the AGMA e-mails you already know that the annual call for...

FEATURE ARTICLES | 2021-01-01

AGMA Standards Committees Keep the Industry “In Gear” for 2021

A comprehensive look at latest standards development efforts.
VOICES | 2021-01-01

AGMA is Here for You

The annual Gear Technology State of the Gear Industry Report is always a must read for any industry leader.
GEAR TALK WITH CHUCK | 2020-12-09

The Book of Knowledge

Gears are wonderful things. Unfortunately, they require support from shafts, bearings, and some sort of housing to be useful. Without these things,...
GEAR TALK WITH CHUCK | 2020-11-18

First Steps

As mentioned in my last posting, blank sheets of paper present a huge challenge to any machinery designer. For the beginner, it is even a higher hu...
GEAR TALK WITH CHUCK | 2020-11-11

The Terror of an Empty Sheet

Today’s title does not refer to writer’s block. After 660 contributions to the magazine and blog, I still have a few things to cover ahead of my pl...
GEAR TALK WITH CHUCK | 2020-11-04

Facing Down Contact Ratio

Before we move on from helix angle restrictions, I want to say a few things about face contact ratio. Soon after the appearance of the first helica...
INDUSTRY NEWS | 2020-11-02

AGMA FTM 2021 Call for Papers

Technology is fundamentally changing the way manufacturing is done. The gear industry is faced with emerging trends and innovation that i...
VOICES | 2020-11-01

Gearing for the Future

In 2021, the AGMA Foundation begins its 27th year. It is a critical year for the AGMA Foundation as our industry is facing incredible challenges and opportunities, and AGMA members are asking a great deal from our industry Foundation.
FEATURE ARTICLES | 2020-11-01

AGMA Statistical Programs Help Guide the Gear Industry

Industry data is the essential factor current leaders need for success in navigating through the uncertainty created by the pandemic and the resulting economic downturn.
INDUSTRY NEWS | 2020-10-14

AGMA Releases Publication for Splines - Design and Application (Inch Edition)

AGMA Technical Division has released AGMA 945-2-B20, Splines - Design and application (Inch Edition).  AbstractThis information...
INDUSTRY NEWS | 2020-09-17

AGMA Releases Publication for Flexible Coupling Nomenclature

AGMA has released the ANSI/AGMA 9009-E20, Flexible Couplings - Nomenclature for Flexible Couplings publication. This standard presen...
INDUSTRY NEWS | 2020-09-10

AGMA Foundation Awards Scholarships to Eight Engineering Students

The AGMA Foundation Board of Trustees is pleased to announce the recipients of its 2020 Scholarship Awards. Each fall, the Foundation awa...
PUBLISHER'S PAGE | 2020-09-01

Keeping In Touch - From a Distance

I've been tuning in to a lot of information in new ways, lately. Chances are, you have, too. The pandemic has restructured all of our lives in ways we couldn’t have imagined just a year ago. From work to school to family, video chat and teleconference have replaced warm hugs and handshakes. There's no kibitzing around the water cooler.
VOICES | 2020-09-01

All In for 2021

As Knute Rockne once said, "When the going gets tough, the tough get going." And so it is with AGMA members.
TECHNICAL ARTICLES | 2020-09-01

History of the AGMA J-FACTOR

I felt a tap on my shoulder. Turning, I saw the chief draftsman who said, "You're in charge of gears." And he walked away. Dumbfounded, I stared at the back of his head, and sat down at my drafting board. It was November, 1963, shortly after JFK was assassinated, and after I was discharged from the U.S. Army.
INDUSTRY NEWS | 2020-08-28

Fairlane Gear Joins AGMA

Fairlane Gear has joined AGMA as a new member. Located in Canton, Michigan, Fairlane Gear has been producing finished gear and spline pro...
GEAR TALK WITH CHUCK | 2020-08-26

Finding Good Candidates

Once you commit to developing the talented team members your business needs, how do you decide who to invest in? The “washout rate” at professional...
GEAR TALK WITH CHUCK | 2020-08-19

Ladder Shopping

You will be relieved to hear that I am temporarily out of youth soccer analogies. I could switch to “American” football analogies but am mourning t...
INDUSTRY NEWS | 2020-07-14

AGMA Offers Gearing Courses on Virtual Platform

The American Gear Manufacturers Association (AGMA) converted six classes — that normally occur face-to-face — into online, li...
GEAR TALK WITH CHUCK | 2020-07-08

Striving to be Essential

We have all gotten a harsh lesson in exactly what “essential” means from an invisible enemy that does not care about degrees or bank balances. Thos...
GEAR TALK WITH CHUCK | 2020-06-04

Have You Taught Them Enough?

One of the things that has surprised me about my consulting work is how the unusual projects find me. Unique applications, tooth forms, drive arran...
FEATURE ARTICLES | 2020-06-01

Additive Manufacturing - An Update

Writing about additive manufacturing (AM) and the 3-D printing of gears is somewhat akin to publishing an updated dictionary. A new edition dictionary is literally already out of date before it hits Amazon's or your local bookseller's shelves. New words are coined and definitions are updated constantly. So it is with AM: The technology is evolving so quickly that technical papers and other sources of AM information require constant revision.
GEAR TALK WITH CHUCK | 2020-05-13

Visiting Old Friends

Seven weeks into the lockdown, we are all looking for “new content.” Even with a full cable “package” there are times when it seems there is nothin...
GEAR TALK WITH CHUCK | 2020-04-29

A Life Without Deadlines

After years of battling deadlines, the COVID-19 crisis has cleared my personal calendar of all deadlines except this blog posting. If you are “shel...
INDUSTRY NEWS | 2020-04-27

AGMA Offers External Spur and Helical Gear Mesh Contact Analysis Course Online

This online seminar will calculate and demonstrate the effect that shaft bending, torsional windup and tooth deflections have on loaded t...
INDUSTRY NEWS | 2020-04-10

Industry Employees Receive Preference for AGMA Foundation Scholarship Awards

The Covid-19 crisis will not stop the 2020 AGMA Foundation scholarship awards. The Foundation will award scholarships of up to $2,500 to ...
GEAR TALK WITH CHUCK | 2020-04-08

This Changes Everything

Ready for things to get back to normal? Unless you were already a recluse, this time of “social distancing” is an uncomfortable and awkward experie...
GEAR TALK WITH CHUCK | 2020-03-25

Working from Home

Navigating the COVID-19 Crisis

Many of you are working from home this week, some for the first time. As a veteran of this challenge, I ho...
INDUSTRY NEWS | 2020-03-24

AGMA Welcomes New Board Members

The American Gear Manufacturers Association (AGMA) welcomes four new members to its board of directors. These directors will serve a thre...
INDUSTRY NEWS | 2020-03-20

AGMA Releases Standard for Wind Turbine Gearboxes

The AGMA Technical Division is pleased to announce the publication of the following new AGMA publication: ANSI/AGMA 6006-B20, Standard fo...
INDUSTRY NEWS | 2020-03-12

Amorphology Joins AGMA

Amorphology recently joined the American Gear Manufacturers Association (AGMA). Amorphology applies advanced materials and manufacturing ...
GEAR TALK WITH CHUCK | 2020-03-11

Finding Future Superstars

Fans of American football have moved on to the next phase of their pre-draft preparation: digesting the advice of hundreds of experts on which play...
VOICES | 2020-03-01

Developing Certainty in Uncertain Times

AGMA President Matt Croson explains how the association is here for members and the gear industry at large, providing information, resources, education and training -- even during the crisis.
TECHNICAL ARTICLES | 2020-03-01

Calculated Scuffing Risk: Correlating AGMA 925-A03, AGMA 6011-J14 and Original MAAG Gear Predictions

This paper relates specifically to gears that are finish ground and considered high speed per ANSI/AGMA 6011; meshing elements with PLVs (pitch line velocities) in excess of 35 m/s or rotational speeds greater than 4,500 rpm.
INDUSTRY NEWS | 2020-02-21

AGMA Releases Publication on Face Gears

The American Gear Manufacturers Association (AGMA) Technical Division is pleased to announce the publication of AGMA 916-A19, Face Gears ...
INDUSTRY NEWS | 2020-02-17

AGMA/ABMA Trade Webinar Series Registration Now Open

Webinar: Surviving the Trade Hurricane: Overview of Key U.S. Trade Issues and Prospects for 2020 and BeyondDate: March 6, 2020Time: 1:00 ...
INDUSTRY NEWS | 2020-02-13

AGMA Releases Newly Affirmed Publications

The AGMA Technical Division is pleased to announce that ANSI has approved the reaffirmation of the following standards.ANSI/AGMA 6033-C08...
INDUSTRY NEWS | 2020-02-10

ANSI Approves Reaffirmation of Four AGMA Standards

The American Gear Manufacturers Association (AGMA) Technical Division is pleased to announce that the American National Standards Institu...
INDUSTRY NEWS | 2020-01-31

AGMA Releases Publication on Cylindrical Involute Gearing

The AGMA Technical Division recently announced the release of ANSI/AGMA 2002-D19, Tooth Thickness and Backlash Measurement of Cylindrical...
INDUSTRY NEWS | 2020-01-20

AGMA Releases Publication on Lubrication of Industrial Gear Drives

The AGMA Technical Division recently announced the release of AGMA ISO 18792-A19, Lubrication of industrial gear drives. Gear lubric...
PUBLISHER'S PAGE | 2020-01-01

The Tradition Continues

You may have noticed a few changes around here. Most notably, the face on this page isn't the one you're used to seeing here. As you've probably heard by now, Michael Goldstein, founder and Publisher since 1984, has stepped back from his day-to-day duties and transferred the operation of Gear Technology, Power Transmission Engineering and Gear Technology India to the American Gear Manufacturers Association.
VOICES | 2020-01-01

To Be Continued...Without Question

Welcome to a new era of Gear Technology magazine! AGMA is proud to add Gear Technology, Gear Technology India, Power Transmission Engineering, the Michael Goldstein Gear Technology Library and supporting websites and circulation under its umbrella.
FEATURE ARTICLES | 2020-01-01

Training - A Top Priority for Investment

In this edition of Arvin's Angle, Joe explains why training isn't an expense. It's an investment.
GEAR TALK WITH CHUCK | 2019-12-19

Year in Review

This will be my last blog posting for 2019. Our holidays fall on Tuesdays and Wednesdays this year so office hours are somewhat irregular. Back whe...
GEAR TALK WITH CHUCK | 2019-12-12

Communication and Keywords

I used to be a Boy Scout leader. One of the important components of the “Trail to Eagle” is the Communications merit badge. In our troop, we made i...
GEAR TALK WITH CHUCK | 2019-12-10

Little Misunderstanding

My far better half’s difficulties with getting her “circle” of church women to embrace modern communications is a cautionary tale for the workplace...
GEAR TALK WITH CHUCK | 2019-11-12

Behind the Curtain

Regular readers know of my concerns about the over reliance on commercial gear design software. Some of what you are about to hear may sound famili...
INDUSTRY NEWS | 2019-11-11

AGMA Foundation Sets Scholarship Awards Record

The AGMA Foundation Board of Trustees is pleased to announce the recipients of its 2019 Scholarship Awards. Each fall, the Foundation awa...
GEAR TALK WITH CHUCK | 2019-11-07

The How vs. Why Balance

We have faced this How vs. Why balance before in both the magazine and the blog. The technical papers published tend to be at the cutting edge of g...
PUBLISHER'S PAGE | 2019-11-01

Gear Technology - To Be Continued

When I started Gear Technology more than 35 years ago, my intention was to create something of lasting value for the gear industry. It was a way of giving back to the industry that had been so good to me and my family.
GEAR TALK WITH CHUCK | 2019-10-30

What Do You Want to Know?

AGMA’s acquisition of the assets of Randall Publications LLC, the company responsible for both
GEAR TALK WITH CHUCK | 2019-10-18

That Competitive Edge

The exhibition is torn down, the displays packed away, and tired exhibitors and guests are looking forward to a relaxing weekend before planning st...
GEAR TALK WITH CHUCK | 2019-10-08

So, Where Do I Start?

The last blog posting cautioned against over reliance on reference books for design guidance. A perfectly logical follow-up to that caution is “Whe...
GEAR TALK WITH CHUCK | 2019-10-03

Toying with Old Recipes

A consultant’s code is similar to a medical doctor’s; e.g. — Rule #1 is to “do no harm.” Sometimes I feel like a real buzz kill while explaining to...
GEAR TALK WITH CHUCK | 2019-09-05

Company Pride

This belt buckle found its way to me recently when my daughter’s in-laws moved into a new house in the Chicago suburbs. The couple emigrated from P...
PUBLISHER'S PAGE | 2019-09-01

Get Answers LIVE and in Person

You have challenges. We all do. If your challenges are related to any aspect of gear design, manufacturing, inspection, heat treating or use, the solutions can be found at Motion + Power Technology Expo, which takes place October 15–17 in Detroit.
FEATURE ARTICLES | 2019-09-01

MPT Expo Map and Listings

Find the exhibitors you want to visit at the first-ever Motion+Power Technology Expo (formerly Gear Expo).
GEAR TALK WITH CHUCK | 2019-08-29

Appreciating the Gory Details

Big equipment often requires special processing equipment. Those 300-ton locomotives used unique heat treatment on the gears which required the des...
PUBLISHER'S PAGE | 2019-08-01

Gear Show 4.0

There have always been plenty of reasons to attend Gear Expo. For decades, it’s been the best place to see all of the technology, vendors and solutions in the gear industry, all under one roof. Now that it's the Motion + Power Technology Expo, it's even more true.
FEATURE ARTICLES | 2019-08-01

MPT Expo is all about Learning

In addition to hundreds of relevant suppliers, Motion+Power Technology Expo (Oct. 15-17 in Detroit) also offers many opportunities for learning.
FEATURE ARTICLES | 2019-08-01

Show Stoppers

When you go to MPT Expo, make sure to visit the exhibitors in our special advertising section!
TECHNICAL ARTICLES | 2019-08-01

Impact of Root Geometry Manufacturing Deviations from a Theoretical Hob Rack on Gear Bending Stress

This study emphasizes the importance of a closed-loop approach togear design and manufacturing to assure designed root fillet shapes are attained in production, and gears meet the design intent.
GEAR TALK WITH CHUCK | 2019-07-05

Gear Origins: Graham Penning

For the last few years I have delivered a gear foundation course to both young and experienced engineers wanting to understand gear technology, and...
VOICES | 2019-07-01

Knowledge is the Best Insurance

If you were offered an opportunity to spend quality time with leading experts in your field, where in-depth discussions and dialogues occurred on subjects that directly impacted your business, would you do it?
ASK THE EXPERT | 2019-07-01

Tooth Thickness Tolerance and AGMA 2002-C16

A reader asks: We are currently revising our gear standards and tolerances and a few questions with the new standard AGMA 2002-C16 have risen. Firstly, the way to calculate the tooth thickness tolerance seems to need a "manufacturing profile shift coefficient" that isn't specified in the standard; neither is another standard referred to for this coefficient. This tolerance on tooth thickness is needed later to calculate the span width as well as the pin diameter. Furthermore, there seems to be no tolerancing on the major and minor diameters of a gear.
GEAR TALK WITH CHUCK | 2019-06-27

The Wide World of Gears

Geoff Ashcroft’s wonderful account of his odyssey from the United Kingdom through India and on to the United States illustrates just how different ...
GEAR TALK WITH CHUCK | 2019-06-20

New Thinking on Old Topics

Claude Gosselin’s origin story reminds us that not everyone shares our enthusiasm for these ubiquitous but complicated artifacts. Just showing an i...
GEAR TALK WITH CHUCK | 2019-06-13

Rockford: Should it be Renamed Gear City USA?

Rob Swiss’ origin story reached me the very same day his new hometown, Rockford, Illinois, ...
INDUSTRY NEWS | 2019-06-01

Industry News

The complete Industry News section from the June 2019 issue of Gear Technology./
GEAR TALK WITH CHUCK | 2019-05-21

My Origin Story: James Richards

James Richards’ entry int...
GEAR TALK WITH CHUCK | 2019-05-07

Dave Hinz — My Story

Sometimes there is a “gear guy” lurking inside an ordinary engineer. Risking the embarrassment of a poor result on an unexpected “pop quiz” was...
PUBLISHER'S PAGE | 2019-05-01

It's Not Your Father's Gear Business

The world is changing. I've just returned from the AGMA Annual Meeting in Scottsdale, AZ. Like always, it was a great opportunity to visit with peers, colleagues, customers and competitors in the gear industry. But this year's event was far more than just a chance to reunite with old friends. No, this year's annual meeting was also a wake-up call.
ASK THE EXPERT | 2019-05-01

Application Factors

A reader asks: I'd like to know about the different approaches and factors considered while determining the value of Ka in regards to the DIN 3990 and AGMA standards.
GEAR TALK WITH CHUCK | 2019-04-25

Applying the Fundamentals

Yefim Kotlyar’s origin story is a great lesson to anyone entering the o...
GEAR TALK WITH CHUCK | 2019-04-24

Yefim Kotlyar — My Story

Yefim Kotlyar is a wonderful example of how gears unite the world. His background is much different than mine, yet we share a deep appreciation...
INDUSTRY NEWS | 2019-04-16

AGMA Announces Additive Manufacturing Publication for Gear Making

The American Gear Manufacturers Association (AGMA) announced the publication of an emerging technology document, Additive Manufacturing T...
INDUSTRY NEWS | 2019-04-12

AGMA and Richard J. Daley College Partner on National Training Center in Chicago

The American Gear Manufacturers Association (AGMA) signed a partnership agreement with Richard J. Daley College, one of the City Colleges...
GEAR TALK WITH CHUCK | 2019-04-09

Ed Kaske — My Story

Ed Kaske was one of the first to respond to our request for origin stories. I apologize for the delay in getting this to print; we liked it so ...
GEAR TALK WITH CHUCK | 2019-04-04

Gear Technology Hall of Fame?

Cleveland has always seemed a rather odd location for the Rock and Roll Hall of Fame. Hollywood, on the other hand, is the logical place for that W...
GEAR TALK WITH CHUCK | 2019-03-28

What Does Dudley Say?

Another giant of the gear industry — Darle W. Dudley (1917-2003) — is still influencing new engineers today through his writings. The very first ge...
GEAR TALK WITH CHUCK | 2019-03-26

Remembering the Giants

While writing about the “degrees of connection” between current industry leaders and th...
GEAR TALK WITH CHUCK | 2019-03-21

My Story: Ernie Reiter

In the last semester of my senior year of mechanical engineering, I recall having a discussion with my study group friends about the purpose of our...
GEAR TALK WITH CHUCK | 2019-03-19

Six Degrees of Gears ...

Our next “origin story” author is another consulting en...
GEAR TALK WITH CHUCK | 2019-03-14

My Career in Gears: Ray Drago

When I was in high school (Manual Training High School in Brooklyn, NY) I had a general science teacher, Mrs. Gaudiello, who recognized something i...
GEAR TALK WITH CHUCK | 2019-03-12

Combating Gear Ignorance

GEAR TALK WITH CHUCK | 2019-03-07

Coaching Trees

March Madness is upon us once again, that wonderful tim...
PUBLISHER'S PAGE | 2019-03-01

What's In a Name

As most of you know by now, the trade show formerly known as Gear Expo is now the Motion + Power Technology Expo. If you're a gear-industry veteran, you might be confused by this change. If you've been coming to the show for years - or exhibiting at it - you might even feel a little betrayed. But I'm here to tell you it's going to be alright.
ADDENDUM | 2019-03-01

Watch It - Revolutions

It's time to catch up on the episodes of Revolutions that you might have missed.
GEAR TALK WITH CHUCK | 2019-02-12

Adult Education

Origin Stories Needed

How did you get started in the gear trade? We are interested in sharing your “origin story” as a way of helping hum...
INDUSTRY NEWS | 2019-02-07

AGMA and NFPA Announce MPT Conference at Motion + Power Technology Expo

The new Motion + Power Technology Expo (MPT Expo), formerly Gear Expo, will offer a new opportunity for attendees to learn from industry ...
GEAR TALK WITH CHUCK | 2019-01-31

The Importance of Dirty Hands

My dear friend Octave’s account of his co-op experience (see Tuesday’s 1-29 post) reinforces my belief that no one should trust an engineer or desi...
GEAR TALK WITH CHUCK | 2019-01-30

From Co-op to Vice President: Octave A. LaBath

I was attending the University of Cincinnati in the college of engineering. After my freshman year in 1960, I started my co-op job with the Cincinn...
INDUSTRY NEWS | 2019-01-18

AGMA Promotes Blassingame to Vice President, Education Services

The American Gear Manufacturers Association (AGMA) is pleased to announce the promotion of Casandra Blassingame to vice president, educat...
GEAR TALK WITH CHUCK | 2018-12-20

Don't Go Chasing Superstars

There is a great deal of buzz these days around the shortage of skilled workers for our manufacturing operations. Almost as much as there is concer...
INDUSTRY NEWS | 2018-11-15

Beautiful on the Inside

Higher Quality Internal Gears

GEAR TALK WITH CHUCK | 2018-11-13

What Do You Really Need to Know?

I am pretty certain I told this story before, but it is worth repeating in the context of preserving corporate memory. When AGMA first offered ISO ...
GEAR TALK WITH CHUCK | 2018-11-01

Institutional Memory

There is an old joke that a consultant is someone who borrows your watch in order to tell you what time it is. Unfortunately, there is an element o...
INDUSTRY NEWS | 2018-10-02

AGMA Presents Distinguished Service Award at Fall Technical Meeting

The American Gear Manufacturers Association (AGMA) presented Terry Klaves, retiree from Milwaukee Gear/Regal, with the AGMA Distinguished...
INDUSTRY NEWS | 2018-09-01

Industry News

Liebherr and Wenzel announce sales and service agreement; MPIF releases new powder metal standard; Gear Motions announces promotions; Profilator opens new factory and more gear industry news.
GEAR TALK WITH CHUCK | 2018-08-28

Gear Design: More Than Pretty Pictures

No one has a drafti...
GEAR TALK WITH CHUCK | 2018-08-14

Finding the Right Combination

One of the hal...
GEAR TALK WITH CHUCK | 2018-07-11

Maximum Power Density

For some applications, maximum power density is worth the cost and difficulty of a complex epicyclic or “planetary” design. If, like me, you prefer...
PUBLISHER'S PAGE | 2018-07-01

Steel Yourself

Will tariffs and quotas affect your ability to operate in the fourth quarter this year?
TECHNICAL ARTICLES | 2018-07-01

A Comparison of Current AGMA, ISO and API Gear Rating Methods

There are many different gear rating methods in use today, and they can give substantially different results for any given gearset. This paper will make it easy to understand the choices and the impact the choices have on gearbox design. Eight standards are included - AGMA 2001; AGMA 6011; AGMA 6013; ISO 6336; API 613; API 617; API 672; and API 677. (Click HERE for the Appendix to this article).
GEAR TALK WITH CHUCK | 2018-06-14

Options for Material Selection

Disclaimer: This is the policy I follow for material selection. Your situation may call for a different decision. You should not adopt this pol...
GEAR TALK WITH CHUCK | 2018-06-07

Hardenability 102

Material Grade in Gears

ASK THE EXPERT | 2018-06-01

Selecting the Right Tooth Thickness

A reader asks: We are currently revising our gear standards and tolerances, and a few problems with the new standard AGMA 2002-C16 have arisen. Firstly, the way to calculate the tooth thickness tolerance seems to need a "manufacturing profile shift coefficient" that isn't specified in the standard; neither is another standard referred to for this coefficient. This tolerance on tooth thickness is needed later to calculate the span width as well as the pin diameter. Furthermore, there seems to be no tolerancing on the major and minor diameters of a gear.
INDUSTRY NEWS | 2018-06-01

Industry News

The complete industry news section from the June 2018 issue of Gear Technology.
GEAR TALK WITH CHUCK | 2018-05-29

Read the Label Carefully

So, what exactly do we mean when we say “use good material” for your gears? Once again, the answer is “it depends.” Even the “best” steel may be wr...
INDUSTRY NEWS | 2018-05-23

Highlights from the 2018 AGMA/ABMA Annual Meeting

More than 300 executives gathered in late April to connect and network with peers at the 2018 AGMA/ABMA Annual Meeting in Naples, Flori...
GEAR TALK WITH CHUCK | 2018-05-18

Parametric Design

One of the scariest things a gear designer can face is a blank sheet of paper. This is why most of our products are “derivative” rather than “revol...
GEAR TALK WITH CHUCK | 2018-05-03

That X Factor

Our international readers are no doubt chuckling over this silly, American “long addendum” terminology. The “civilized world” has long relied on a ...
PUBLISHER'S PAGE | 2018-05-01

Annual Report

At most family reunions, everyone gets along, everyone puts on a good face, and everyone celebrates their togetherness. The AGMA annual convention held at the end of April was a lot like that.
ASK THE EXPERT | 2018-05-01

Calculated Gear Life Values

I have a query (regarding) calculated gear life values. I would like to understand for what % of gear failures the calculated life is valid? Is it 1-in-100 (1% failure, 99% reliability) or 1-in-one-thousand (0.1% failure)?
INDUSTRY NEWS | 2018-04-30

EMAG Gets Smart with Mobile Analytics

Machine data has never been easier to collect, distribute and analyze. Monitoring production lines, evaluating tools and surveying tool conditions ...
GEAR TALK WITH CHUCK | 2018-03-29

Back to Basics: Helical Gears

Most of the gearboxes I have been involved with use single helical gears. Its excellent power capacity per mesh makes it the default system for man...
GEAR TALK WITH CHUCK | 2018-03-06

Nothing Remains Constant

We cannot leave our lesson about tooth depths without covering bevel gears. There is a tendency to think of bevels and worms as being best left to ...
TECHNICAL ARTICLES | 2018-03-01

Reliability, Lifetime and Safety Factors

A discussion of ISO and AGMA standards for gears, shafts and bearings, and the art of designing a gearbox that meets your requirements.
GEAR TALK WITH CHUCK | 2018-03-01

Out of Your Depth?

How did that over pin calculation work out? My congratulations if you managed to work your way through it without tearing your hair out. Guess what...
GEAR TALK WITH CHUCK | 2018-01-18

Avoiding the Potholes

No one becomes a gear expert overnight. You might be abruptly assigned the title by your employer, but it takes some time before you can really ful...
INDUSTRY NEWS | 2018-01-10

AGMA Officially IACET Accredited

The American Gear Manufacturers Association (AGMA) has been officially accredited by the International Association for Continuing Educati...
GEAR TALK WITH CHUCK | 2017-12-19

The Importance of Scut Work

At the risk of permanently cementing my curmudgeon status, today’s blog is a defense of scut work as a necessary tool for training young engineers....
GEAR TALK WITH CHUCK | 2017-12-05

I Know It Is in Here Somewhere

A question came to me recently in an e-mail that I could not answer from memory. It seemed like something I had read in a book once so the long-del...
GEAR TALK WITH CHUCK | 2017-11-30

Still Pumped About Herringbones

I rambled on about herringbone gear in my last posting but still have more to share on these once commonplace gears. Today we’ll cover the use of c...
ASK THE EXPERT | 2017-11-01

Friction Coefficient of Differently Treated Steel Surfaces

A reader asks about ion-nitride finished shafts and the proper friction coefficient to be used for calculations.
GEAR TALK WITH CHUCK | 2017-10-31

Gear Expo Swag Report

Soon you will be reading lots of stories about the 2017 AGMA Fall Technical Meeting and Gear Expo in our magazine and online reports. BUT, the info...
GEAR TALK WITH CHUCK | 2017-10-22

Automation, Regulations and Job Creation

Robots, self driving cars, and artificial intelligence are popular topics in business publications. Depending upon the writer’s perspective, they a...
GEAR TALK WITH CHUCK | 2017-09-21

Who Do You Think You Are?

My last posting recommended preparing an “elevator pitch” ahead of attending the AGMA Fall Technical Meeting and Gear Expo. I have gone through thi...
GEAR TALK WITH CHUCK | 2017-09-19

What is Your Elevator Pitch?

Networking is an important part of business life these days; it always has been. Internet sites like LinkedIn promise to connect us to other like-m...
INDUSTRY NEWS | 2017-09-08

Bob Errichello Retires; Rob Budny and Andy Milburn to Teach the AGMA Gear Faliure Analysis Course

After teaching the AGMA Gear Failure Analysis course for 27 years, Bob Errichello and Jane Muller of Geartech retired from instructing in...
GEAR TALK WITH CHUCK | 2017-09-07

Fundamentals

I mentioned succession planning in my last posting; most of the senior gear engineers I know are planning to retire in the next few years and their...
GEAR TALK WITH CHUCK | 2017-09-05

Planning for Disaster

The massive flood damage in Houston will take years and billions of dollars to repair. Even with plenty of warning, there was no way to evacuate mi...
PUBLISHER'S PAGE | 2017-09-01

Got Gear Questions - Get Gear Answers

Gear Expo 2017 is your best opportunity to expand your knowledge, get answers to your technical questions and solve your toughest manufacturing challenges. The reason is quite simple. Gear Expo provides you with the greatest collection of gear expertise, know-how and experience you can find.
INDUSTRY NEWS | 2017-09-01

Industry News

Bob Errichello retires from teaching, Siemens expands technical center, HBM Holdings acquires Schafer Industries, plus new hires and other industry news.
ADDENDUM | 2017-09-01

Guilt by Association

The definition is pretty straightforward: An association is an organization of persons having a common interest. Basically, it's a group that shares a purpose or mission that exists for the mutual advancement of its members.
PUBLISHER'S PAGE | 2017-08-01

Columbus Calling

Summer never lasts as long as you want it to. By the time you read this, you'll be well into the hazy, lazy days, and the season will be gone before you know it. That means you're running out of time to make plans to attend our industry's most important event. Of course, I'm talking about Gear Expo (October 24 - 26) and the AGMA Fall Technical Meeting (October 22 - 24), both of which will take place in Columbus, OH.
FEATURE ARTICLES | 2017-08-01

Gear Expo 2017

AGMA Sets Up Shop in Living Laboratory of the Midwest. Columbus, Ohio recently surpassed Indianapolis as the second largest city in the Midwest behind Chicago, according to the United States Census Bureau. This could change come the 2020 census, but there's no denying Buckeye Nation is going places.
FEATURE ARTICLES | 2017-08-01

2017 Gear Expo: Gears, Machinery and a Whole Lot More

There is so much more to Gear Expo than gears or the machinery that makes them. That's because it takes much, much more to make a finished gear than even the most sophisticated machine. And it is exhibitors who are part of the "much, much, more" that are addressed in this article.
GEAR TALK WITH CHUCK | 2017-07-05

The Internet Never Forgets

Another one of those graduate student requests turned up in my e-mail inbox this week. This one referenced one of my AGMA Fall Technical Meeting pa...
INDUSTRY NEWS | 2017-07-01

Industry News

AGMA adds two new committees, Star Cutter Celebrates 90 years, plus other news from around the industry.
INDUSTRY NEWS | 2017-06-14

AGMA Announces Two New Member-Driven Committees

The American Gear Manufacturers Association (AGMA) announced two new member-driven committees:  Emerging Technology and Industry Voi...
PUBLISHER'S PAGE | 2017-06-01

Get Smarter at Gear Expo

There are many benefits to attending Gear Expo, but if you're not taking advantage of the educational opportunities, you're missing out.
INDUSTRY NEWS | 2017-06-01

Industry News

The complete Industry News section from the June 2017 issue of Gear Technology.
GEAR TALK WITH CHUCK | 2017-05-11

Here There Be Dragons

On the AGMA Helical Gear Rating Committee we frequently deal with how to warn users away from potentially dangerous designs. Some years ago our won...
GEAR TALK WITH CHUCK | 2017-05-02

Invisible Activity

Are you familiar with the “Law of the Farm?” The Law reminds everyone that there are some activities that cannot be rushed. No matter how many trac...
PUBLISHER'S PAGE | 2017-05-01

Honored and Impressed

At the AGMA annual meeting last month, the association presented me with its Distinguished Service Award.
FEATURE ARTICLES | 2017-05-01

Upgrading Your Toolbox

Manufacturers focus on tool design, materials, coating, machine tool options and cutting parameters.
TECHNICAL ARTICLES | 2017-05-01

Girth Gears - More than Just Metal and Teeth

Large, multi-segmented girth gears do not behave like the relatively compact, rigid, monolithic structures we typically envision when discussing gear manufacturing. Girth gears are very large, non-rigid structures that require special care during the machining of individual mating segments as well as the assembled gear blank itself.
INDUSTRY NEWS | 2017-05-01

Industry News

Faydor Litvin, 1914-2017; Michael Goldstein receives AGMA Distinguished Service Award.
EVENTS | 2017-05-01

Calendar

Upcoming gear-related engineering and technical events.
INDUSTRY NEWS | 2017-04-12

AGMA Welcomes New Board Members

The American Gear Manufacturers Association (AGMA) recently announced the election of Jim Bregi, president of Doppler Gear as the new AGM...
GEAR TALK WITH CHUCK | 2017-04-06

Good Product Specifications are Critical to Good Design

History is full of great ideas that did not succeed — frequently because they did not meet the “needs” of the marketplace. One of the first things ...
GEAR TALK WITH CHUCK | 2017-04-04

What Makes a Good Design?

In my last post I insisted that good design wins in the marketplace. As a student of automotive history, I am compelled to admit that some very gre...
GEAR TALK WITH CHUCK | 2017-03-28

Should Gear Technology be Open Source?

One of the few things I miss about my old commute is all the great content I heard on public radio. Ten hours a week of news, in depth features, an...
GEAR TALK WITH CHUCK | 2017-03-16

Why Not Teach?

This past week I had the opportunity to participate in a wonderful seminar for process engineers. My fellow presenters were all industry veterans w...
PUBLISHER'S PAGE | 2017-03-01

Transferring Tribal Knowledge

How do we educate the next generation of gear industry employees, and how do we train the ones we already have?
GEAR TALK WITH CHUCK | 2017-02-21

Unreasonable Backlash

Not to worry — no politics here. The “backlash” I want to talk about is the “lost motion” in gear systems. It sometimes seems to rile people up alm...
GEAR TALK WITH CHUCK | 2017-02-07

Gear Technology in 1912

Continuing with that January 1912 issue of Industrial Engineering magazine … Imagine the courage it took to present a seven-page articl...
GEAR TALK WITH CHUCK | 2017-01-26

Way Waaay Back

Writing about my now cumbersome reference library prompted a bit of consolidation and reorganization. Unfortunately, my resolve diminished when I c...
GEAR TALK WITH CHUCK | 2017-01-24

Setting the Wayback Machine

I have often touted the Gear Technology archives as your ready source of reliable information. A recent question was reso...
VOICES | 2017-01-01

AGMA: Delivering Value in New and Measurable Ways

When I first met the leaders of the gearing industry in April 2016 at AGMA's 100th Anniversary Celebration, I did my best imitation of Joe Namath, who famously predicted a Super Bowl victory for his New York Jets: I guaranteed we would reach our 101st year!
TECHNICAL ARTICLES | 2017-01-01

Repair of Large, Surface-Degraded Industrial Gears - a New Approach

This paper presents a new approach to repair industrial gears by showing a case study where pressure angle modification is also considered, differently from the past repairing procedures that dealt only with the modification of the profile shift coefficient. A computer program has been developed to automatically determine the repair alternatives under two goals: minimize the stock removal or maximize gear tooth strength.
ADDENDUM | 2017-01-01

Swiss Watchmaking - with 3-D Printing

For centuries, Switzerland has been considered home to the greatest watchmakers in the world. Works of fine beauty and optimal precision have been the norm there seemingly forever.
INDUSTRY NEWS | 2016-11-21

AGMA Board Enters 2017 With New Mission and Strategy

The American Gear Manufacturers Association (AGMA) will enter its 101st year with a new vision, mission and four supporting strategic obj...
GEAR TALK WITH CHUCK | 2016-11-17

Energy Policy Thoughts

Our industry makes parts for all different types of energy and transportation. AGMA, our national trade association, was formed, in part, because t...
INDUSTRY NEWS | 2016-11-14

AGMA Awards Maiuri with the Technical Divison Executive Committee Award

It has been a tradition of AGMA’s Technical Division to acknowledge the outstanding contributions of individual committee members w...
INDUSTRY NEWS | 2016-11-10

AGMA Offers Two New Courses in 2017

The American Gear Manufacturers Association (AGMA) is pleased to announce that the organization will offer two new courses to the 2017 ed...
GEAR TALK WITH CHUCK | 2016-11-10

Change Begins at Home

From reports I have gotten, 2016 is proving to be a challenging year for the gear industry. Traditional markets such as mineral extraction and gas/...
GEAR TALK WITH CHUCK | 2016-11-03

What Would You Like to Know?

The call for abstracts for the 2017 AGMA Fall Technical Meeting went out months ago. While it seems early to many readers, this schedule has to be ...
PUBLISHER'S PAGE | 2016-11-01

Our Next Leader

No, not that president! I mean Matt Croson, the new president of the American Gear Manufacturers Association, who started in June and has been busy getting to know the gear industry and AGMA's members.
VOICES | 2016-11-01

AGMA Standards Committees Keep Industry in Business

More than 100 years ago, gear manufacturers were facing a significant challenge from industry. The incredible advances in industrialization and transportation that occurred at the turn of the 20th century resulted in incredible growth for gear makers, but there were significant technical issues. "The lack of process and product standardization was a continuing problem in all U.S. industry. The lack of industry-wide gear standards meant there were no standard gear tooth sizes, ratings, quality definition or consistent manufacturing methods" (Celebrating 100 Years of Gearing, pg. 22).
INDUSTRY NEWS | 2016-11-01

Industry News

News from around the Industry
GEAR TALK WITH CHUCK | 2016-10-11

The Birth of an Industry

Do you know your company’s origin story? I have worked at seven different gear companies and have visited dozens more; all of them seem to have an ...
FEATURE ARTICLES | 2016-09-01

AGMAs Go-To Gear Guys

While the two have taught a variety of AGMA courses over the years, without question their most popular courses are Gear Failure Analysis (Errichello with longtime colleague Jane Muller) and Gearbox CSI: Forensic Analysis of Gear & Bearing Failures (Drago). Drago currently teaches Manufacturing & Inspection (with AGMA instructor Joseph W. Lenski, Jr.) and Gearbox System Design: The Rest of the Story - Everything but the Gears and Bearings (with AGMA instructor Steve Cymbala) as well.
GEAR TALK WITH CHUCK | 2016-08-30

Hear it First at FTM 2016

Gear Technology has a long history of publishing and archiving important technical papers from the American Gear Manufacturers’ Associatio...
GEAR TALK WITH CHUCK | 2016-07-21

Churning the Continuing Education Dollar

Our magazine publishes hundreds of high-quality technical articles every year. Considerable effort has gone into maintaining a searchable archive o...
GEAR TALK WITH CHUCK | 2016-07-19

Continuing Education

Gear Technology has a major interest in educating its readers. Cutting-edge technical papers are a primary component of o...
GEAR TALK WITH CHUCK | 2016-06-28

The Importance of Record Keeping

    Very rarely does a gearbox designer have the opportunity to see his or her products at work many years later. Recently I was as...
GEAR TALK WITH CHUCK | 2016-06-23

Revisiting the Bad Old Days

  Unless you are involved with rebuilding old equipment, it may be entirely possible to never see a tooth flank with “progressive pitting.”...
INDUSTRY NEWS | 2016-06-16

ITAMCO's Joel Neidig Receives AGMA 2016 Next Generation Award

Joel Neidig, an engineer and lead technology developer with ITAMCO, has received the 2016 Next Generation Award from the American Gear Ma...
GEAR TALK WITH CHUCK | 2016-06-07

Training Days

What a pleasant surprise this week to get a request for information on training rookie gear machine operators! It is easy to get caught up in the n...
TECHNICAL ARTICLES | 2016-06-01

Gear Backlash Analysis of Unloaded Gear Pairs in Transmissions

A best practice in gear design is to limit the amount of backlash to a minimum value needed to accommodate manufacturing tolerances, misalignments, and deflections, in order to prevent the non-driving side of the teeth to make contact and rattle. Industry standards, such as ANSI/AGMA 2002 and DIN3967, provide reference values of minimum backlash to be used in the gear design. However, increased customers' expectations in vehicle noise eduction have pushed backlash and allowable manufacturing tolerances to even lower limits. This is especially true in the truck market, where engines are quieter because they run at lower speeds to improve fuel economy, but they quite often run at high torsional vibration levels. Furthermore, gear and shaft arrangements in truck transmissions have become more complex due to increased number of speeds and to improve efficiency. Determining the minimum amount of backlash is quite a challenge. This paper presents an investigation of minimum backlash values of helical gear teeth applied to a light-duty pickup truck transmission. An analytical model was developed to calculate backlash limits of each gear pair when not transmitting load, and thus susceptible to generate rattle noise, through different transmission power paths. A statistical approach (Monte Carlo) was used since a significant number of factors affect backlash, such as tooth thickness variation; center distance variation; lead; runout and pitch variations; bearing clearances; spline clearances; and shaft deflections and misalignments. Analytical results identified the critical gear pair, and power path, which was confirmed experimentally on a transmission. The approach presented in this paper can be useful to design gear pairs with a minimum amount of backlash, to prevent double flank contact and to help reduce rattle noise to lowest levels.
PUBLISHER'S PAGE | 2016-06-01

Apologies

I'd like to apologize to the dedicated people working on revisions to the AGMA 925 standard and the Technical Report ISO 15144-1, both of which deal with the issue of micropitting. In the March/April issue of Gear Technology, we published an opinion piece in our Voices column that harshly criticized the methods for predicting micropitting outlined in ISO 15144-1.
PUBLISHER'S PAGE | 2016-05-01

Happy Birthday!

The 25th anniversary is the silver. The 50th is the gold. The 75th is the diamond. But what symbolizes the 100th?
VOICES | 2016-05-01

The Gear Industry Needs You

your life and in your professional career is an inflection point for you to take stock of where you came from and where you are going.
FEATURE ARTICLES | 2016-05-01

The End of an Era - Joe Franklin's Valedictory

AGMA President Joe Franklin is stepping down after some 24 years on the job. He graciously took the time to answer some questions from Gear Technology Senior Editor Jack McGuinn regarding his tenure.
INDUSTRY NEWS | 2016-05-01

Industry News

Lastest news from around the industry.
VOICES | 2016-05-01

Make Volunteering the Norm

This is a very exciting year for AGMA as the organization celebrates its 100-year anniversary. In addition to the anniversary, AGMA President Joe Franklin, jr., who has done an outstanding job at the helm of AGMA for the last 25 years, will retire, and we welcome in our new AGMA President, Matt Croson, who will lead us into the next 100 years. The centennial kicked off in October with a dinner at the AGMA Gear Expo in Detroit and will continue throughout 2016 with a number of exciting events scheduled to celebrate this milestone anniversary.
INDUSTRY NEWS | 2016-04-01

AGMA Names Croson President

AGMA has named Matthew E. Croson as its next president. Croson has more than two decades of leadership and communications experience in m...
GEAR TALK WITH CHUCK | 2016-03-22

The Beginning of Wisdom

Aphorisms, pithy statements of fact, are a favorite of mine. They appeal because when you need to remember things you cannot always count on ...
VOICES | 2016-03-01

Critique of the ISO 15144-1 Method to Predict the Risk of Micropitting

There exists an ongoing, urgent need for a rating method to assess micropitting risk, as AGMA considers it a "a very significant failure mode for rolling element bearings and gear teeth - especially in gearbox applications such as wind turbines."
FEATURE ARTICLES | 2016-03-01

Plastic Gearing Continues Converting the Unconverted

Plastic gears are everywhere today - throughout your car, at the oceans' lowest depths, in deep space. The question, when is a metal gear a candidate for plastic conversion, can be addressed in three words, i.e. what's the application?
GEAR TALK WITH CHUCK | 2016-02-11

The World before Wikipedia and Google

I have a lot of books. Like old friends, they sit on shelves and in boxes waiting for me to need them. It has been pointed out to me that books are...
GEAR TALK WITH CHUCK | 2016-01-19

A Wide World of Gears

Blogging from an American perspective can sometimes make me forget that the gear industry is active around the world. I get occasional reminders in...
GEAR TALK WITH CHUCK | 2016-01-14

Better Tools, Better Gears?

  Previous blogs have discussed how fortunate we are to live in an age with the very best in gear making technology. Modern gear grinding m...
GEAR TALK WITH CHUCK | 2016-01-07

Who Offered the First Enclosed Gearbox?

Let’s start 2016 off with a joint research project. While visiting a client late last year we got to talking gear history and he recounted a story ...
GEAR TALK WITH CHUCK | 2016-01-05

Happy to be Back to Work?

As much as I enjoy a bit of time off it gets boring if I am away from gears for too long. Since I have been in the consulting trade the lull in act...
ASK THE EXPERT | 2016-01-01

Premature Gear Failure

I would appreciate if you could assist with a gear failure (occurring) after just seven weeks in service, post installation. This driving gear wheel has been installed in a medium-speed engine with backlash present at four different positions; with additional backlash checked on the mating surfaces. All backlash was found within (OEM)-recommended values. Please note included photos - it seems that the crack has started at the root fillet. Any comments would be appreciated.
INDUSTRY NEWS | 2015-12-28

AGMA Releases Latest Newsletter

New AGMA Publications The AGMA Technical Division has announced the publication of a number of new standards: The new revision of ANSI/A...
INDUSTRY NEWS | 2015-12-07

AGMA Releases Vehicle Spur and Helical Standard Revision

The AGMA Technical Division has released the new revision of ANSI/AGMA 6002-C15 “Design Guide for Vehicle Spur and Helical Gears&rd...
GEAR TALK WITH CHUCK | 2015-11-10

Another Type of Veteran

We interrupt this blog to salute all our VETERANS on this national holiday set aside to remember them. The gear industry as we know it really got i...
GEAR TALK WITH CHUCK | 2015-10-15

Family Reunion Time

The AGMA Fall Technical Meeting (FTM) has been called a gear industry family reunion. This year’s gathering gets underway Sunday (Oct. 18th) in Det...
GEAR TALK WITH CHUCK | 2015-09-29

Honorable Data

The huge flap over the Volkswagen “defeat code” for diesel EPA testing is a cautionary tale for all engineers and executives — regardless of produc...
GEAR TALK WITH CHUCK | 2015-09-22

How Reliable is Our Information?

How much can we trust our understanding of how things work? There was a special joint web ex meeting this week between two AGMA committees that got...
GEAR TALK WITH CHUCK | 2015-09-10

A Century of Gears

The American Gear Manufacturers’ Association [AGMA] will celebrate its 100th Anniversary in 2016. The party will begin with the Fall Tec...
GEAR TALK WITH CHUCK | 2015-09-08

Ratio Analysis

For many years my employers participated in AGMA’s Statistical Analysis Program. Member companies would fill out monthly reports on sales and vario...
GEAR TALK WITH CHUCK | 2015-08-27

Has School Started Yet?

Based on television ads, Facebook posts, and the number of school buses on the road it appears school has started for the fall term. It seems a bit...
GEAR TALK WITH CHUCK | 2015-08-13

Sprucing Up Content

Back in 1987 I wrote a book about gears aimed at the novice engineer or purchasing agent. An Introduction to Gear Design was originally a work assi...
GEAR TALK WITH CHUCK | 2015-08-06

Customers? Or Fans?

My last posting concerned finding the right customers for implementing new technology. Many great ideas failed in the marketplace because of bad ti...
PUBLISHER'S PAGE | 2015-07-01

One More Reason

If you haven’t already done so, you should make plans to attend Gear Expo in September. It’s a unique and important show, and you should take advantage of it.
GEAR TALK WITH CHUCK | 2015-06-23

Peer Review Time

October may seem a long time from now, but preparations continue for the AGMA Fall Technical meeting. I’m not presenting a paper this year, but I j...
GEAR TALK WITH CHUCK | 2015-06-04

Things We Don’t Know

Noted gear consultant and gear educator Ray Drago is fond of saying that a consultant’s best answers usually start with “it depends.” Those of you ...
GEAR TALK WITH CHUCK | 2015-06-02

Areas of Expertise

One of the first things you hear upon becoming a parent is that “children keep you young.” Once, I foolishly thought this referred to your physical...
GEAR TALK WITH CHUCK | 2015-05-21

Applied Science, Part Two

My previous posting on engineering vs. science reminded me of a professor who insisted “real engineers” had to be able to reason things back to “fi...
GEAR TALK WITH CHUCK | 2015-05-14

Final Points...

W.Edward Deming’s quality management system was credited with resurrecting and changing Japan’s manufacturing economy after World War II. Experts t...
PUBLISHER'S PAGE | 2015-05-01

Im Surprised that Youre Surprised

I’ve just come back from the AGMA annual meeting in Napa, California, where I had a great time visiting with friends and colleagues in the gear industry. As always, the annual meeting was a great opportunity to network and meet with other AGMA members.
GEAR TALK WITH CHUCK | 2015-04-16

Economic Priorities

If you occasionally buy a lottery ticket, you probably enjoy speculating on what you would do with the money. The only assured value of a ticket is...
GEAR TALK WITH CHUCK | 2015-03-24

What Gear Trade Milestones Have You Witnessed?

[starbox]Last week’s blog on the Century of AGMA Timeline brought to mind a humorous story of our now adult daughter’s first “play store” set. If y...
GEAR TALK WITH CHUCK | 2015-03-19

Gear Milestones Needed

[starbox]The American Gear Manufacturers Association (www.agma.org) will be celebrating its centennial in 2016. In preparation for the big party, t...
INDUSTRY NEWS | 2015-03-01

GT Extras

This issue, GT Extras brings you "Heat Treat and Induction Hardening of Industrial Gears," a treasure trove of heat treating related technical articles and a call for help in preparation for AGMA's 100th anniversary.
ASK THE EXPERT | 2015-03-01

Calculating Face Load Distribution Factor

How should we consider random helix angle errors fHβ and housing machining errors when calculating KHβ? What is a reasonable approach?
TECHNICAL ARTICLES | 2015-03-01

A Practical Approach for Modeling a Bevel Gear

The geometry of the bevel gear is quite complicated to describe mathematically, and much of the overall surface topology of the tooth flank is dependent on the machine settings and cutting method employed. AGMA 929-A06 — Calculation of Bevel Gear Top Land and Guidance on Cutter Edge Radius — lays out a practical approach for predicting the approximate top-land thicknesses at certain points of interest — regardless of the exact machine settings that will generate the tooth form. The points of interest that AGMA 929-A06 address consist of toe, mean, heel, and point of involute lengthwise curvature. The following method expands upon the concepts described in AGMA 929-A06 to allow the user to calculate not only the top-land thickness, but the more general case as well, i.e. — normal tooth thickness anywhere along the face and profile of the bevel gear tooth. This method does not rely on any additional machine settings; only basic geometry of the cutter, blank, and teeth are required to calculate fairly accurate tooth thicknesses. The tooth thicknesses are then transformed into a point cloud describing both the convex and concave flanks in a global, Cartesian coordinate system. These points can be utilized in any modern computer-aided design software package to assist in the generation of a 3D solid model; all pertinent tooth macrogeometry can be closely simulated using this technique. A case study will be presented evaluating the accuracy of the point cloud data compared to a physical part.
GEAR TALK WITH CHUCK | 2015-01-15

Studying the State of the Art

[starbox] A few years ago I presented a paper on reverse engineering at the AGMA Fall Technical Meeting. I heard through the grapevine that some f...
GEAR TALK WITH CHUCK | 2015-01-13

Do You Know Your Design DNA?

GEAR TALK WITH CHUCK | 2015-01-09

It is Nagging Time Again

[starbox] One of the first posts of this blog encouraged participation in AGMA’s Fall Technical Meeting (FTM) “paper” program. Our magazine reprin...
GEAR TALK WITH CHUCK | 2014-12-18

Holding Down the Fort

[starbox] With only a few days before the Holiday Break, gear shops big and small are diligently trying to get important projects completed. Peo...
GEAR TALK WITH CHUCK | 2014-12-04

Overcoming Adversity

[starbox] My last blog concerned project management and the problems of staying on schedule. I thought it only fair to pass on some techniques I...
GEAR TALK WITH CHUCK | 2014-10-30

Moving the Goal Posts

[starbox]
GEAR TALK WITH CHUCK | 2014-10-29

History Lessons

GEAR TALK WITH CHUCK | 2014-10-23

Preserving Gear History

One of the initiatives now in progress since the close of the American Gear Manufacturers Association (AGMA) 2014 Fall FTM was building a detailed timeline of the organization’s history since its founding in 1916.
GEAR TALK WITH CHUCK | 2014-10-21

Fall Technical Meeting Report

GEAR TALK WITH CHUCK | 2014-10-16

Publish or Perish

[starbox] My very first posting in this space was a call for papers for the 2013 AGMA Fall Technical Meeting. I had just gotten home from Arlingto...
GEAR TALK WITH CHUCK | 2014-10-14

Not a Boys Club

[starbox] This is a belated post in support of the International Day of the Girl. Around the world girls have to risk abuse, sexual assault, and e...
GEAR TALK WITH CHUCK | 2014-10-07

Spamsters be Damned — We're Bloggin' Here

 [starbox] The anticipated, two-way dialog for this blog has been hampered by persistent spammers trying to scam their way onto t...
FEATURE ARTICLES | 2014-09-01

Getting the Right Tools

So there is little chance that they need the same software to assist with their work. Gone are the days when companies wrote their own code and process engineers thumbed the same tattered reference book.
GEAR TALK WITH CHUCK | 2014-07-15

Our “Common” Language?

[starbox] Watching the World Cup final reminds me of that old adage about Americans and the English being divided by a common language. For exam...
GEAR TALK WITH CHUCK | 2014-07-10

If You Are Going to Make Buggy Whips…

[starbox] If you are going to make buggy whips, they better be good ones. That is the lesson I took away from reading about hundred-year-old Wis...
GEAR TALK WITH CHUCK | 2014-06-12

The Error of Hiding Failures

[starbox] The General Motors ignition switch fiasco remains in the headlines, having cost many lives, millions of dollars, and a number a career...
PUBLISHER'S PAGE | 2014-06-01

Proverbs

Publisher Michael Goldstein describes what it means to him that Gear Technology is celebrating its 30th anniversary.
EVENTS | 2014-06-01

AGMA Recognizes Member Achievements at Annual Meeting

The AGMA/ABMA Annual Meeting took place April 10-12 in St. Petersburg, Florida. Between committee meetings, networking opportunities and social events, many individuals in the gear industry were presented awards.
GEAR TALK WITH CHUCK | 2014-05-06

The Peer Review Process

[starbox] I began this blog with an appeal for abstracts for the 2014 AGMA Fall Technical Meeting. For those of you who had an abstract accepted...
INDUSTRY NEWS | 2014-05-02

AGMA Committee Revises Fine Pitch Gearing Data

The AGMA Fine Pitch Gearing Committee is pleased to announce the publication of the newly revised information sheet AGMA 910-D12...
TECHNICAL ARTICLES | 2014-05-01

Application and Improvement of Face Load Factor Determination Based on AGMA 927

The face load factor is one of the most important items for a gear strength calculation. Current standards propose formulae for face load factor, but they are not always appropriate. AGMA 927 proposes a simpler and quicker algorithm that doesn't require a contact analysis calculation. This paper explains how this algorithm can be applied for gear rating procedures.
GEAR TALK WITH CHUCK | 2014-04-29

A Good Guy Exits

[starbox] We would like to add our voice to those congratulating AGMA Technical Division VP Charlie Fischer on his retirement. I didn’t meet Cha...
INDUSTRY NEWS | 2014-04-28

Scott Knoy Receives AGMA Next Generation Award

German Machine Tools of America (GMTA, formerly American Wera) proudly announces the winning of the prestigious Next Generation award...
GEAR TALK WITH CHUCK | 2014-04-03

In Praise of Deadlines

[starbox] It is only April 2nd, but I can already predict that local TV cameras will have the post office staked out 13 days from now as thousan...
GEAR TALK WITH CHUCK | 2014-03-28

What Happened to FEA?

[starbox] Thinking back on my experiences on the Helical Gear Rating Committee, I am a bit shocked at what hasn’t happened. As AGMA 218 was bein...
GEAR TALK WITH CHUCK | 2014-03-26

Where Do Allowable Stresses Come From?

One of the most important aspects of a gear rating standard is the allowable stress charts. For spur and ...
GEAR TALK WITH CHUCK | 2014-03-21

Action Items for the Gear Trade

[starbox] Recently I learned that it took over 20 years for the gear industry to agree on its first “standard” tooth form — and that was after s...
GEAR TALK WITH CHUCK | 2014-03-14

The Beginning of Wisdom

GEAR TALK WITH CHUCK | 2014-03-07

What Did They Know and When Did They Know It?

[starbox] No, I am not launching a criminal investigation. The title of this posting summarizes my ongoing study of the history of gear ratings....
FEATURE ARTICLES | 2014-03-01

PPD Wear Protection Treatment for Large Parts Opens New Horizons

Environmentally friendly, highly efficient and lasting a product's lifetime. With characteristics like this, Pulsed-Plasma Diffusion (PPD) technology from Oerlikon Balzers has established itself as an industry standard for the treatment of large automotive press tooling. Now the technology specialists are targeting new applications with this advanced process, offering an alternative to traditional hard-chrome processes.
VOICES | 2014-03-01

AGMA Losing One of the Good Guys

Charlie Fischer, VP Technical Division, retiring end of April
PRODUCT NEWS | 2014-03-01

Product News

The complete product news section from the March/April 2014 issue, featuring quick-change spline rolling racks from U.S. Gear Tools.
GEAR TALK WITH CHUCK | 2014-02-21

Times Haven’t Changed That Much

GEAR TALK WITH CHUCK | 2014-02-10

All Hail the Internet

While it is customary for people of a certain age to decry the decline of civilization resulting from the Internet, this is one old guy who wonders...
GEAR TALK WITH CHUCK | 2014-02-07

Many Hands Make For Light Work

[starbox] As mentioned in my last posting, the AGMA Helical Gear Rating Committee ([HGRC)] was in Chicago this week for two days of work on the ...
GEAR TALK WITH CHUCK | 2014-02-05

Practical Magic

[starbox] Today I have t
GEAR TALK WITH CHUCK | 2014-02-03

Time for a Gear Awards Show?

[starbox] It is that time of year when some of our favorite television shows are pre-empted by awards shows. Every facet of the entertainment bu...
GEAR TALK WITH CHUCK | 2014-01-31

Barn Find Gearboxes

GEAR TALK WITH CHUCK | 2014-01-29

Unsung Heroes of the Gear Industry - Metallurgists

Snow covered trees
GEAR TALK WITH CHUCK | 2014-01-27

How Did You Become a Gear Expert?

[starbox] Some months ago I got a call from a young engineer asking how he could get into the consulting business. It was a flattering call but a ...
GEAR TALK WITH CHUCK | 2014-01-22

Teaching Old Dogs New Tricks

[starbox] I am happy to report that I survived my first Skype teleconference today. This amazing technology may be old hat to some of you but as a...
GEAR TALK WITH CHUCK | 2014-01-17

Gear Training Then and Now

[starbox] Blogging about gear training brings to mind the widely attended Illinois Tool Works Gear School that Bob Moderow operated on behalf of h...
INDUSTRY NEWS | 2014-01-15

AGMA Releases New Marine Gear Unit Standard

The AGMA Helical Enclosed Drive Marine Units Committee recently completed the development of the next version of their popular flagship s...
INDUSTRY NEWS | 2013-11-20

AGMA Committee Works on Face Gear Draft

AGMA standard 203.03  - Fine Pitch On-Center Face Gears for 20 Degree Involute Spur Pinions has been withdrawn from the AGMA files a...
TECHNICAL ARTICLES | 2013-10-01

Gear Standards and ISO GPS

In today’s globalized manufacturing, all industrial products having dimensional constraints must undergo conformity specifications assessments on a regular basis. Consequently, (standardization) associated with GD&T (geometrical dimensioning and tolerancing) should be un-ambiguous and based on common, accepted rules. Of course gears - and their mechanical assemblies - are special items, widely present in industrial applications where energy conversion and power transmission are involved.
VOICES | 2013-09-01

How Gear Standards are Written

The new chairman of the AGMA Technical Division Executive Committee explains what's involved in the process of developing technical standards at the AGMA.
FEATURE ARTICLES | 2013-09-01

Exhibitors Confidential

Gear Expo 2013 product preview features a look at many of the key booths you won't want to miss.
FEATURE ARTICLES | 2013-08-01

Gear Expo 2013 - An Oscar-Worthy Indy Production

We are well into an odd-number year, so it must be just about time for another Gear Expo. Indeed, the big show -- Gear Expo 2013 -- kicks off in Indianapolis at 9:00 a.m. Tuesday, September 17, wrapping up Thursday the 19th at 4:00 p.m. And whether you are exhibiting or attending, the bottom line is you are going -- a good thing for you, your company and the tightly knit U.S. gear industry.
FEATURE ARTICLES | 2013-08-01

Engineering Questions - SME has the Answers with Knowledge Edge

The Society of Manufacturing Engineers (SME) has been gathering, validating and sharing manufacturing knowledge for more than 80 years. Traditionally, SME resources were purchased by individuals for their own personal use or by colleges and universities as textbooks. Recently, these same colleges and universities were looking for digital resources to provide to their instructors and students. Companies were requesting SME content digitally for their employees as well.
FEATURE ARTICLES | 2013-08-01

Crash Course on New Technology

It's nice to see old friends. It's also advantageous to make new ones. Gear Expo has always been a family reunion of sorts, but it's first and foremost an opportunity to show off the latest and greatest technologies that are impacting the gear industry today. With this in mind, Gear Technology recently spoke with those responsible for putting the Fall Technical Meeting (FTM) and Gear Expo 2013 together in Indianapolis.
FEATURE ARTICLES | 2013-08-01

Leading the Way in Lead Crown Correction and Inspection

Forest City Gear applies advanced gear shaping and inspection technologies to help solve difficult lead crown correction challenges half a world away. But these solutions can also benefit customers much closer to home, the company says. Here's how…
INDUSTRY NEWS | 2013-06-07

AGMA Elects Wendy Young to Board

Forest City Gear President Wendy Young has been elected to the American Gear Manufacturers Association’s Board of Directors, and be...
FEATURE ARTICLES | 2013-01-01

The Gear Gods Help Those That Help Themselves

"Gear Train" is a new Gear Technology section focusing on training and education in the gear industry. For the first installment, we've focused on AGMA's online and video training programs.
TECHNICAL ARTICLES | 2012-11-01

Predicted Scuffing Risk to Spur and Helical Gears in Commercial Vehicle Transmissions

AGMA925–A03 scuffing risk predictions for a series of spur and helical gear sets of transmissions used in commercial vehicles ranging from SAE Class 3 through Class 8.
EVENTS | 2012-11-01

AGMA FTM: Where Great Minds and Manufacturing Mesh

Another year, another AGMA Fall Technical Conference. But this is no ho-hum event. Not when every year, the conference attracts some of the greatest mechanical engineering minds on the planet, along with representatives of the world’s greatest manufacturing entities. And who knows—perhaps one day there will be an extraterrestrial contingent—the science is that good. And all of it readily applicable to real-world manufacturing.
ADDENDUM | 2012-11-01

Gears without Standards - But Tons of Fun!

If you enjoy working with your hands—without doubt a large segment of Gear Technology’s audience—you must go to robives.com. There you will find one of the most clean-but-serious fun websites on the Internet. It is where you will learn—or re-learn, in some cases—how to create things from paper. Origami, you’re thinking? Nah—mere child’s play.
EVENTS | 2012-09-01

Calendar

The complete Technical Calendar from the September 2012 issue of Gear Technology.
TECHNICAL ARTICLES | 2012-06-01

Towards an Improved AGMA Accuracy Classification System on Double-Flank Composite Measurements

AGMA introduced ANSI/AGMA 2015–2–A06— Accuracy Classification System: Radial System for Cylindrical Gears, in 2006 as the first major rewrite of the double-flank accuracy standard in over 18 years. This document explains concerns related to the use of ANSI/AGMA 2015–2–A06 as an accuracy classification system and recommends a revised system that can be of more service to the gearing industry.
FEATURE ARTICLES | 2012-01-01

New Energy - Same Challenges

Uncertainty casts a shadow over future business opportunities for manufacturers serving the new energy markets.
TECHNICAL ARTICLES | 2012-01-01

Accelerating Validation Testing

Bringing new or improved products to market sooner has long been proven profitable for companies. One way to help shorten the time-to-market is to accelerate validation testing. That is, shorten the test time required to validate a new or improved product.
EVENTS | 2011-09-01

2011 AGMA Fall Technical Meeting

The AGMA Fall Technical Meeting provides an opportunity to share ideas with others on the design, analysis, manufacturing and application of gears, gear drives, and related products, as well as associated processes and procedures.
VOICES | 2011-06-01

Gear Expo: Changing with the Times

AGMA president Joe T. Franklin Jr. talks about how the AGMA Gear Expo has grown and changed since its beginnings as a table-top show in 1987.
VOICES | 2011-05-01

Developing Flexible Couplings Standards

AGMA Flexible Couplings committee chairman Glenn C. Pokrandt gives an update about standards and other documents under development.
VOICES | 2011-03-01

Standards Development: Enclosed Drives

Chairman Todd Praneis of Cotta Transmission describes the activities of AGMA's Enclosed Drives technical committee.
VOICES | 2011-01-01

Writing the Standards

Gary A. Bish, director of product design technology for Horsburgh & Scott, discusses his role as chairman of the AGMA mill gearing committee.
VOICES | 2010-11-01

The AGMA Brand

AGMA Chairman David Ballard discusses what it means to be an AGMA member.
EVENTS | 2010-11-01

Technically Speaking, a Huge Success

A recap of the AGMA 2010 Fall Technical Meeting.
VOICES | 2010-08-01

Raising the Standards

Dr. Phil Terry, chairman of the AGMA Technical Division Executive Committee, talks about the standards-making process.
FEATURE ARTICLES | 2010-08-01

IMTS 2010 Booth Previews

Here's our editors' look at some of the best new technologies for gear manufacturers that will be on display at IMTS 2010.
VOICES | 2010-07-01

AGMA Foundation--A Dream Fulfilled

Arlin Perry, president of Comer Industries, talks about his tenure as chairman of the AGMA Foundation and its role in supporting the industry.
EVENTS | 2010-06-01

Gear Applications All the Rage at Windpower 2010

Capitalizing on a burgeoning new technology where gears are of great import, the gear community gathered en masse at the American Wind Energy Association’s Windpower Expo 2010.
PUBLISHER'S PAGE | 2010-05-01

Building on Your Foundation

When you graduated from school and made your way into the world, you probably thought you’d learned everything you needed to know to be successful. But those of us who’ve been out in the workforce for some time know that you never stop learning.
PRODUCT NEWS | 2009-11-01

Cutting Gears on a Machining Center

Depo provides all-in-one machining capabilities for the gear industry.
VOICES | 2009-09-01

Gear Expo: Changing with the Times

"One of the reasons AGMA has been successful over our 93-year history is that the association’s agenda, programs and activities reflect the voices of our members," says Joe T. Franklin, Jr., AGMA President.
INDUSTRY NEWS | 2009-09-01

Industry News

The complete Industry News section from the September/October 2009 issue of Gear Technology.
FEATURE ARTICLES | 2009-08-01

Gear Expo 2009 - The Show of Shows for All Things Gearing

As Gear Expo 2009 approaches (Sept. 15–17), the show finds itself in an “It was the best of times, it was the worst of times” mindset.
FEATURE ARTICLES | 2009-07-01

An International Wind Turbine Gearbox Standard

Industrial gear standards have been used to support reliability through the specification of requirements for design, manufacturing and verification. The consensus development of an international wind turbine gearbox standard is an example where gear products can be used in reliable mechanical systems today. This has been achieved through progressive changes in gear technology, gear design methods and the continual development and refinement of gearbox standards.
ADDENDUM | 2009-07-01

You Want It When

What do glam and avant garde rock star Brian Eno, AGMA and Seattle Gear Works have in common? Admittedly, not much. But there is a connection of sorts.
FEATURE ARTICLES | 2008-09-01

Advantage AGMA: Technical Committees Build Knowledge and Experience in Gear Industry

The world is full of acronyms. At work, the inbox reveals e-mails from the AWEA, SAE, MPIF and AMT. On the weekends, Saturday mornings are consumed by activities involving the AYSO, PTA, YMCA or DMV. It’s a struggle to determine what organization does what and why we should care in the first place.
PUBLISHER'S PAGE | 2008-08-01

Volunteering is a Win-Win

Step forward now to help yourself and your industry.
INDUSTRY NEWS | 2008-05-01

Industry News

The complete Industry News section from the May 2008 issue of Gear Technology.
INDUSTRY NEWS | 2008-03-01

In Memoriam: Donald R. McVittie

It is with regret we report that Donald R. McVittie passed away January 20, 2008.
PUBLISHER'S PAGE | 2008-01-01

The Graying of the Gear Industry

The gear industry is getting old--fast. What are you doing about it?
INDUSTRY NEWS | 2007-08-09

Five New Companies Join AGMA

The American Gear Manufacturers Association added five new member companies this month.New member companies include:Bluffton Motor Works ...
TECHNICAL ARTICLES | 2007-08-01

Gear Expo 2007 Show Preview

The organizers of Gear Expo 2007 promise to combine the most popular features of shows past with some innovations for this year’s attendees. By the time the show closes on October 10, the association hopes its targeted 175 exhibitors walk away with new insights leading to profitability and renewed contacts.
TECHNICAL ARTICLES | 2007-08-01

2007 Fall Technical Meeting Schedule of Events

Listing of papers to be presented and activities for the 2007 AGMA Fall Technical Meeting.
ADDENDUM | 2007-05-01

One Man's Junk Equals Fellow Gear Lover's Treasures

Tom Every has a collection of gears that would rival many small warehouses.
INDUSTRY NEWS | 2007-02-12

AGMA Seeks Staff Engineer

The American Gear Manufacturers Association is seeking a staff engineer responsible for coordinating technical committees in the developm...
FEATURE ARTICLES | 2007-01-01

On-Site or Online, AGMA Teaches Gear Basics and Beyond

Despite the many things being done to promote manufacturing nationwide, there still remains an acute need for gear-specific training, remedial or otherwise.
EVENTS | 2007-01-01

AGMA Delegates Meet Chinese Counterparts

The AGMA pavilion was a hot spot at October's PTC-Asia show in Shanghai, as evidenced by the intense quoting reported by exhibitors.
ADDENDUM | 2006-11-01

Galleria Gears

For those of us in the gear industry, the concept of gear design is all about involutes, ratios and diameters. Alexander Kirberg has a different vision.
INDUSTRY NEWS | 2006-04-29

AGMA Seeks New Executive

AGMA's current vice president, technical division is retiring at the end of 2006 and the association is currently accepting applicati...
INDUSTRY NEWS | 2006-04-14

AGMA Welcomes Five New Members

The American Gear Manufacturers Association announced in its quarterly publication that five new companies recently joined the ranks as m...
INDUSTRY NEWS | 2006-04-12

Parker Bayside Combines Servo Motor and Helical Planetary Gearhead

The Stealth line of gearmotors from Parker Bayside represents the first time a brushless servo motor and a helical planetary gearhead hav...
INDUSTRY NEWS | 2006-04-12

Samputensili Master Gears Personalized to Customer or DIN Specifications

Samputensili has introduced a range of master gears to determine work gear accuracy and setting masters to adjust checking equipment. ...
INDUSTRY NEWS | 2006-04-12

Star SU Acquires Marketing and Manufacturing Rights for Bencere Products

Winco Industries has acquired the marketing and manufacturing rights to a patented series of padded adjustable reamers and fine boring to...
INDUSTRY NEWS | 2006-04-03

Bill Bradley Awarded AGMA’s Lifetime Achievement Award

The AGMA Board of Directors awarded Bill Bradley, AGMA’s Vice President for the Technical Division with the Lifetime Achievement Awa...
PRODUCT NEWS | 2006-03-01

Shorter Cycle Times for Carburizing

Dana Corp. is developing a process that carburizes a straight bevel gear to a carbon content of 0.8% in 60 fewer minutes than atmosphere carburizing did with an identical straight bevel.
TECHNICAL ARTICLES | 2006-03-01

Detailed Computer Model of Gearbox Reduces Design Time

LMS International helped a Fiat subsidiary develop a new, dynamic vibro-acoustic prediction method to reduce design time and engineering costs through accurate prediction of gear noise in the design phase.
INDUSTRY NEWS | 2006-03-01

Industry News

The complete Industry News section from March/April 2006
INDUSTRY NEWS | 2006-01-31

AGMA Announces New Board of Directors

The American Gear Manufacturers Association announced the 2006 board of directors at its annual meeting in March. Stan Blenke, executiv...
INDUSTRY NEWS | 2006-01-20

Charles Fischer Promoted at AGMA

The American G...

PUBLISHER'S PAGE | 2005-09-01

Making It in America: U.S. Manufacturing Is Alive, Well and Prospering

Most firms in the gear industry we've talked to over the past year are making more gears than ever, generating more sales, and filling up their schedule books into next year and beyond.
PRODUCT NEWS | 2005-07-01

Product News

The complete Product News from July/August 2005.
TECHNICAL ARTICLES | 2005-07-01

Systematic Investigations on the Influence of Case Depth on the Pitting and Bending Strength of Case Carburized Gears

The gear designer needs to know how to determine an appropriate case depth for a gear application in order to guarantee the required load capacity.
INDUSTRY NEWS | 2005-04-12

New AGMA Officers

At the AGMA Annual meeting in March, the officers for 2005 were announced. Incomging officers are: Leslie Hennessy, Chairman Stan...
TECHNICAL ARTICLES | 2004-09-01

Conversation with Joe Franklin, AGMA President

Gear Technology talks with AGMA's president about the association and its role in the gear industry.
PUBLISHER'S PAGE | 2004-07-01

Sweet Spot

When a baseball player hits the ball well, he can hear it and feel it in his swing. There’s nothing quite like the feel of driving the bat through the ball and watching the ball sail over the fence.
TECHNICAL ARTICLES | 2004-05-01

Globalization Brings AGMA, ISO Standards Closer

“The gear marketplace is a global marketplace.” Bill Bradley says it easily, with no special emphasis. The vice president of AGMA’s technical division sees the statement as an obvious fact.
TECHNICAL ARTICLES | 2004-05-01

Comparison of Rating Trends in AGMA Versus ISO

As the international business community grows closer together, the need for understanding differences between national and international gear rating standards becomes increasingly important for U.S. gear manufacturers competing in the world market.
REVOLUTIONS | 2003-09-01

Revolutions

Welcome to Revolutions, the column that brings you the latest, most up-to-date and easy-to-read information about the people and technology of the gear industry.
INDUSTRY NEWS | 2003-07-01

Industry News

Complete Industry News for July/August 2003.
TECHNICAL ARTICLES | 2003-05-01

Characterizaton of Retained Austenite in Case Carburized Gears and Its Influence on Fatigue Performance

Carburized helical gears with high retained austenite were tested for surface contact fatigue. The retained austenite before test was 60% and was associated with low hardness near the case's surface. However, the tested gears showed good pitting resistance, with fatigue strength greater than 1,380 MPa.
ADDENDUM | 2003-03-01

Gear Museum Road Trip

What's the perfect vacation destination for a gear aficionado? Aspen? Too trendy. Miami? Too humid. For a true machinery enthusiast, the perfect vacation is a gear museum road trip.
ADDENDUM | 2003-01-01

A Man and His Mania for Antique Machines

Richard Spens has a hobby that leads him onto the Internet, through magazines, to auctions and into farmers' back yards.
TECHNICAL ARTICLES | 2002-11-01

Cutting Hardened Gears

The need for improved power transmissions that use gears and gearboxes with smaller overall dimensions and with lower noise generation has left manufacturing engineers searching for different methods of gear processing. This search has led to the requirement of hardened gears.
ADDENDUM | 2002-09-01

Gears of Rockwell Hardness

Nobody's sure what went on in Bolsa Chica, CA, when gear-shaped stones were used there 8,700 years ago, but a popular belief is that at least some activity revolved around manufacturing.
PUBLISHER'S PAGE | 2002-09-01

Relief Valve

Some of the pressure on American manufacturers seems to be letting up. This is welcome relief, considering the squeeze they have been under for the past few years.
REVOLUTIONS | 2001-11-01

Revolutions

Welcome to Revolutions, the column that brings you the latest, most up-to-date and easy-to-read information about the people and technology of the gear industry.
PRODUCT NEWS | 2001-09-01

Product News

Complete Product News for September/October 2001.
PUBLISHER'S PAGE | 2001-07-01

Eyes on Detroit

If you think of Gear Expo as only a machine tool show, you're not seeing all of its potential. You may be tempted to skip it this year, especially if you're struggling to fill your current capacity. I've heard too many stories of canceled orders, falling profits and slashed budgets to believe that great numbers of you will be attending Gear Expo with buying new machines as your No. 1 priority.
TECHNICAL ARTICLES | 2001-05-01

Gearbox Field Performance From a Rebuilder's Perspective

The major focus of the American Gear Manufacturers Association standards activity has been the accurate determination of a gearbox's ability to transmit a specified amount of power for a given amount of time. The need for a "level playing field" in the critical arena was one of the reasons the association was formed in the first place. Over the past 85 years, AGMA committees have spent countless hours "discussing" the best ways to calculate the rating of a gear set, often arguing vigorously over factors that varied the resulting answers by fractions of a percentage point. While all that "science" was being debated in test labs and conference rooms all over the country, out industry's customers were conducting their own experiments through the daily operation of gear-driven equipment of all types.
TECHNICAL ARTICLES | 2001-03-01

The Calculation of Optimum Surface Carbon Content for Carburized Case Hardened Gears

For high-quality carburized, case hardened gears, close case carbon control is essential. While tight carbon control is possible, vies on what optimum carbon level to target can be wider than the tolerance.
PRODUCT NEWS | 2001-01-01

Software Bits

Welcome to our Software Bits page. Here we feature new software products for gear design, manufacturing and testing.
TECHNICAL ARTICLES | 2000-11-01

Parallel Axis Gear Grinding: Theory & Application

The goal of gear drive design is to transit power and motion with constant angular velocity. Current trends in gear drive design require greater load carrying capacity and increased service life in smaller, quieter, more efficient gearboxes. Generally, these goals are met by specifying more accurate gears. This, combined with the availability of user-friendly CNC gear grinding equipment, has increased the use of ground gears.
PUBLISHER'S PAGE | 2000-09-01

Triumph of Planning

Normandy overwhelmed me when I first went there several years ago. I was sobered by the sea of white crosses in the cemeteries, I was inspired by the memorials and their tales of courageous soldiers battling impossible odds, and I was horrified by the visions of carnage that came to me as I stood on the scarred beaches of one of the most significant conflicts in human history.
EVENTS | 2000-07-01

Technical Calendar

Complete Technical Calendar for July/August 2000.
PRODUCT NEWS | 2000-07-01

Product News

Welcome to our Product News page. Here we feature new products of interest to the gear and gear products markets.
INDUSTRY NEWS | 2000-07-01

Determining Lead Error on a Crowned Pinion

Q&A is your interactive gear forum.
PRODUCT NEWS | 2000-01-01

Software Bits Our New Products Special Edition

Software Bits for January/February 2000.
FEATURE ARTICLES | 1999-11-01

Coordinate Measuring Machines and the Gear Industry

Gears are extremely complex shapes. Coordinate measuring machines, or CMMs, are designed to measure complex shapes. It seems to follow that CMMs world, therefore, be the ideal tool for measuring gears. But the answer is not so simple.
TECHNICAL ARTICLES | 1999-05-01

Tips for Increasing Power Density in Gear Trains

Gear designers today are continually challenged to provide more power in less space and improve gear performance. The following article looks at some of the most common ways to increase the power density or improve the performance of gear trains. The author also takes an in-depth look at the case of a steel worm mating with a plastic helical gear and explores ways to optimize this increasingly common configuration.
MANAGEMENT MATTERS | 1999-01-01

Issues of Gear Design Using 3D Solid Modeling Systems

More and more gear shops are wrestling with the issue of whether or not solid modeling is right for their gear design work. The Q & A Page of The Gear Industry Home Page has had numerous questions asking how to model gears in solid modeling applications such as AutoCAD, Solidworks and Pr/Engineer. Given the problems people have been having, we are presenting the step-by-step process for modeling gears in Pr/Engineer, but first we thought it would be a good idea to explore the question of whether or not you should even try to design gears using Pro/Engineer or any other 3D solid modeling program.
TECHNICAL ARTICLES | 1998-11-01

Calculating Spur and Helical Gear Capacity with ISO 6336

This is the third article in a series exploring the new ISO 6336 gear rating standard and its methods of calculation. The opinions expressed herein are htose of the author as an individual. They do not represent the opinions of any organization of which he is a member.
TECHNICAL ARTICLES | 1998-09-01

Comparing Standards

One of the best ways to learn the ISO 6336 gear rating system is to recalculate the capacity of a few existing designs and to compare the ISO 6336 calculated capacity to your experience with those designs and to other rating methods. For these articles, I'll assume that you have a copy of ISO 6336, you have chosen a design for which you have manufacturing drawings and an existing gear capacity calculation according to AGMA 2001 or another method. I'll also assume that you have converted dimensions, loads, etc. into the SI system of measurement.
ADDENDUM | 1998-07-01

The Music of the Gears

It should be obvious by now that gears are more than just mechanical components. We have brought you movies with gears and Shakespeare with gears, jewelry made out of gears and so on. Now we, the humble staff at Addendum, are proud to present gears in the world of music.
FEATURE ARTICLES | 1998-07-01

Exhibitors Prepare for the Biggest IMTS Ever

IMTS Show Coverage for 1998.
FEATURE ARTICLES | 1998-05-01

New Guidelines For Wind Turbine Gearboxes

The wind turbine industry has been plagued with gearbox failures, which cause repair costs, legal expenses, lost energy production and environmental pollution.
FEATURE ARTICLES | 1998-05-01

AGMA and ISO Accuracy Standards

The American Gear Manufacturers Association (AGMA) is accredited by the American National Standards Institute (ANSI) to write all U.S. standards on gearing. However, in response to the growing interest in a global marketplace, AGMA became involved with the International Standards Organization (ISO) several years ago, first as an observer in the late 1970s and then as a participant, starting in the early 1980s. In 1993, AGMA became Secretariat (or administrator) for Technical Committee 60 of ISO, which administers ISO gear standards development.
TECHNICAL ARTICLES | 1997-11-01

Gear Shaving Basics - Part I

Gear shaving is a free-cutting gear finishing operation which removes small amounts of metal from the working surfaces of gear teeth. Its purpose is to correct errors in index, helix angle, tooth profile and eccentricity. The process also improves tooth surface finish and eliminates by means of crowned tooth forms the danger of tooth end load concentrations in service.
PUBLISHER'S PAGE | 1997-11-01

Good - Bye, Dad

I sat down to write this editorial about my father, Harold Goldstein, as he approached his 80th birthday in October. I had meant it to be a celebration of his nearly 65 years in the machine tool business. Unfortunately, on August 26, as I was working on it, my father passed away after a long battle with emphysema. This editorial has now become a memorial as well as a celebration.
VOICES | 1997-09-01

The Gear Standards Challenge

Who wants or needs technical details about gearing? Who cares about it? Three out of every four people who are reading this magazine make up at least 75% of those who have an interest in the subject. The members of AGMA, EUROTRANS, JGMA and JSIM have an interest. All the people attending the Gear Expo in Detroit have an interest. Clearly, however, the people with the most pressing interest in our industry are our customers, the end users of gear products. The unfortunate reality, though, is that in many cases, these customers don't even know that's what they want.
TECHNICAL ARTICLES | 1997-07-01

Structural Analysis of Teeth With Asymmetrical Profiles

This article illustrates a structural analysis of asymmetrical teeth. This study was carried out because of the impossibility of applying traditional calculations to procedures involved in the specific case. In particular, software for the automatic generation of meshes was devised because existing software does not produce results suitable for the new geometrical model required. Having carried out the structural calculations, a comparative study of the stress fields of symmetrical and asymmetrical teeth was carried out. The structural advantages of the latter type of teeth emerged.
INDUSTRY NEWS | 1997-07-01

Hoechst Technical Polymers to Gather Plastic Gear Materials Data

Hoechst Technical Polymers has expanded its interests in plastic gears with the introduction of the new Plastic Gear Evaluation and Research machine P-Gear. The machine is the centerpiece of the company's continuing efforts to promote and develop the use of plastic gears in higher-powered applications.
TECHNICAL ARTICLES | 1997-05-01

Eddy Current Examination of Gear Systems

Nondestructive examination (NDE) of ferrous and nonferrous materials has long proved an effective maintenance and anomaly characterization tool for many industries. Recent research has expanded its applicability to include the inspection of large, open gear drives. Difficulties inherent in other NDE methods make them time-consuming and labor-intensive. They also present the user with the environmental problem of the disposal of used oil. The eddy current method addresses these problems.
TECHNICAL ARTICLES | 1997-05-01

CNC Gear Grinding Methods

Grinding in one form or another has been used for more than 50 years to correct distortions in gears caused by the high temperatures and quenching techniques associated with hardening. Grinding improves the lead, involute and spacing characteristics. This makes the gear capable of carrying the high loads and running at the high pitch line velocities required by today's most demanding applications. Gears that must meet or exceed the accuracy requirements specified by AGMA Quality 10-11 or DIN Class 6-7 must be ground or hard finished after hear treatment.
ADDENDUM | 1997-03-01

Down By The Old Mill Stream

Back in the days when our great, great, great, etc., grandaddies were designing gears, one of the most common materials in use was wood. For fairly obvious reasons, we don't see too many wooden gears around anymore. But there are a few.
PUBLISHER'S PAGE | 1997-03-01

Spreading The Word

Long-time readers of these pages will know that I have always felt strongly about the subject of professional education. There's nothing more important for an individual's career development than keeping up with current technology. likewise, there's nothing more important that a company can do for itself and it employees than seeing to it they have the professional education they need. Giving people the educational tools they need to do their jobs is a necessary ingredient for success.
TECHNICAL ARTICLES | 1997-01-01

Composite Electroless Nickel Coatings for the Gear Industry

Electroless Nickel (EN) plating, a process dating back to the 1940s, is one of the predominant metal finishing methods today. It is especially suitable for the gear industry, whose end uses span innumerable other industries, providing an endless assortment of requirements, environments, materials and specifications. EN plating has a broad array of functional features, which include:
TECHNICAL ARTICLES | 1996-11-01

The Advantages of Ion Nitriding Gears

When it comes to setting the standard for gear making, the auto industry often sets the pace. Thus when automakers went to grinding after hardening to assure precision, so did the machine shops that specialize in gearing. But in custom manufacturing of gears in small piece counts, post-heat treat grinding can grind away profits too.
FEATURE ARTICLES | 1996-11-01

Standard Issues

Standards are unlike gears themselves: mundane, but complex, ubiquitous and absolutely vital. Standards are a lingua franca, providing a common language with reference points for evaluating product reliability and performance for manufacturers and users. The standards development process provides a scientific forum for discussion of product design, materials and applications, which can lead to product improvement. Standards can also be a powerful marketing tool for either penetrating new markets or protecting established ones.
TECHNICAL ARTICLES | 1996-09-01

Tooth Modification and Spur Gear Tooth Strain

A major source of helicopter cabin noise (which has been measured at over 100 decibels sound pressure level) is the gear box. Reduction of this noise is a NASA and U.S. Army goal.
FEATURE ARTICLES | 1996-09-01

AGMA & MPIF Develop Standards, Information Sheet for Powder Metal Gears

AGMA and members of the Metal Powder Industries Federation (MPIF) are three years into a joint project to develop specifications and an information sheet on rating powder metal gears. According to committee vice chairman Glen A. Moore of Burgess-Norton Mfg. Co., the first phase of the project, the publication of AGMA Standard "6009-AXX, Specifications for Powder Metallurgy Gears," should be completed in late 1996 or early 1997.
TECHNICAL ARTICLES | 1996-09-01

Alternative Lubrication Methods for Large Open Gear Drives

The type of lubricant and the method of applying it to the tooth flanks of large open gears is very important from the point of view of lubrication technology and maintenance. When selecting the type of lubricant and the application method, it is important to check whether it is possible to feed the required lubricant quantity to the load-carrying tooth flanks, This is necessary to avoid deficient lubrication, damage to the gear and operational malfunctions. It is important to determine the type of lubricant, which may be fluid or grease-like. The consistency of the lubricant will have a direct impact on the ability of the lubrication system to feed adequately the lubricant to the gear. The interactions between the common types of lubricant and the lubrication application methods for open gear drives are shown in Fig. 1.
PUBLISHER'S PAGE | 1996-07-01

geartechnology.com And Other Adventures

You've been reading about it, talking about it, maybe even trying it. Gear Technology has jumped aboard it feet first and begun a voyage on the World Wide Web. Beginning with this issue, an electronic version of the magazine will be online. For those of us who still find the fax machine amazing technology, this is a great leap.
TECHNICAL ARTICLES | 1996-05-01

Generating Precision Spur Gears By Wire EDM

Over the past decade, the wire electrical discharge machine (EDM) has become an increasingly important tool for machining non-standard shapes. It has even been used to cut gears and gear cavities for plastic molds. While generally accepted as a quick and versatile method for cutting spur gears, the EDM gear has lacked the precision of a mechanically machined or ground gear. We suspected that many of the errors associated with these gears were caused by inexact setup procedures, poor tool path control and improper cutting parameters. We decided to test the potential for the wire EDM to make the most accurate gear possible.
PUBLISHER'S PAGE | 1996-05-01

Other People's Footsteps

Earlier this year, a relative of mine, Sidney Mandell, tragically passed away. I had the good fortune to serve with Sidney on the Board of Directors and the Executive Committee of the Machinery Dealers National Association (MDNA). Though he started before me, his MDNA career and mine overlapped for about 2 years. As I think back on the many things I learned form him, one of his favorite phrases keeps come to mind: "We walk in the footsteps of those who have gone before us."
VOICES | 1996-01-01

The Next Generation of Gear Specialists

AGMA has an excellent Training School for Gear Manufacturing. It's a great product providing a great service to the gear industry. Thus far we've educated 117 employees from 71 companies; students range from new hires with no experience to company presidents. Essentially every class since December, 1992, has been sold out.
FEATURE ARTICLES | 1995-11-01

QS - 9000 Rules

Ready or not, QS-9000 is here. If you are a first-tier supplier to one of the Big Three automotive companies, you've already heard that compliance with this new quality standard is now an entry-level requirement for doing business with Ford, General Motors and Chrysler. If you're a second-or third-tier supplier, you can expect the ripple effect of this new standard to hit your company one way or another.
PRODUCT NEWS | 1995-09-01

Product News

Welcome to our Product News page. Here we feature new products of interest to the gear and gear products markets.
TECHNICAL ARTICLES | 1995-07-01

How to Avoid Errors When Measuring Step Gears

There are problems in dimensional measurement that should be simple to solve with standard measuring procedures, but aren't. In such cases, using accepted practices may result in errors of hundreds of microns without any warning that something is wrong.
EVENTS | 1994-11-01

Calendar

Complete calendar for November/December 1994.
FEATURE ARTICLES | 1994-07-01

AGMA Exec Speaks Out on ISO 9000

With all the heated debate and hoopla surrounding ISO 9000 certification, everyone seems to have an opinion about whether to sign up. Executives in the gear industry are flooded with information and ideas that often seem at odds. Gear Technology asked AGMA executive director Joe T. Franklin, Jr. to give an industry perspective on the pros and cons of ISO 9000 certification.
INDUSTRY NEWS | 1993-07-01

Gear Tip Chamfer and Gear Noise; Surface Measurement of Spiral Bevel Gear Teeth

Could the tip chamfer that manufacturing people usually use on the tips of gear teeth be the cause of vibration in the gear set? The set in question is spur, of 2.25 DP, with 20 degrees pressure angle. The pinion has 14 teeth and the mating gear, 63 teeth. The pinion turns at 535 rpm maximum. Could a chamfer a little over 1/64" cause a vibration problem?
TECHNICAL ARTICLES | 1993-05-01

Initial Design of Gears Using an Artificial Neural Net

Many CAD (Computer Aided Design) systems have been developed and implemented to produce a superior quality design and to increase the design productivity in the gear industry. In general, it is true that a major portion of design tasks can be performed by CAD systems currently available. However, they can only address the computational aspects of gear design that typically require decision-making as well. In most industrial gear design practices, the initial design is the critical task that significantly effects the final results. However, the decisions about estimating or changing gear size parameters must be made by a gear design expert.
PUBLISHER'S PAGE | 1993-03-01

Little Things Mean A Lot

"God is in the details," says the philosopher. What he meant was that on the scale of the universe, it's not just the galaxies, the planets, the mountain ranges, or the major rivers that are important. So are the subatomic particles and the genes. It's the little things that make all the difference.
PUBLISHER'S PAGE | 1991-11-01

To Market, To Market

A few months ago at the AGMA management seminar, I was surprised by the feverish note taking that went on at a presentation on marketing. The sight reminded me that while many of us in the gear industry are good engineers, designers, and mangers, we are often not as familiar - or comfortable - with less concrete concepts, such as marketing.
VOICES | 1991-05-01

American Gear Industry Faces Major Challenges

Five years of effort by AGMA came to fruition in January with the publishing of a report from the Department of Commerce. This "National Security Assessment of the U.S. Gear Industry" indicates that if serious measures are not taken, the gear industry's future is in jeopardy. It also sets the tone for confronting major challenges now looming large in our industry.
VOICES | 1991-01-01

AGMA Responds to Gear Standards Article

The authors of last issue's article comparing AGMA, ISO and BS methods for Pitting Resistance Ratings are commended. Trying to compare various methods of rating gears is like hitting a moving target in a thick forest. The use of different symbols, presentations, terminology, and definitions in these standards makes it very difficult. But the greatest problem lies with the authors' use of older versions of these documents. ISO drafts and AGMA standards have evolved at the same time their work was accomplished and edited.
TECHNICAL ARTICLES | 1991-01-01

AGMA, ISO, and BS Gear Standards Part II - Pitting Resistance Ratings

In Part I differences in pitting ratings between AGMA 218, the draft ISO standard 6336, and BS 436:1986 were examined. In this part bending strength ratings are compared. All the standards base the bending strength on the Lewis equation; the ratings differ in the use and number of modification factors. A comprehensive design survey is carried out to examine practical differences between the rating methods presented in the standards, and the results are shown in graphical form.
TECHNICAL ARTICLES | 1990-11-01

AGMA, ISO, and BS Gear Standards Part I - Pitting Resistance Ratings

A study of AGMA 218, the draft ISO standard 6336, and BS 436: 1986 methods for rating gear tooth strength and surface durability for metallic spur and helical gears is presented. A comparison of the standards mainly focuses on fundamental formula and influence factors, such as the load distribution factor, geometry factor, and others. No attempt is made to qualify or judge the standards other than to comment on the facilities or lack of them in each standard reviewed. In Part I a comparison of pitting resistance ratings is made, and in the subsequent issue, Part II will deal with bending stress ratings and comparisons of designs.
PUBLISHER'S PAGE | 1990-05-01

Looking To The Future

Six years ago this month, the very first issue of Gear Technology, the Journal of Gear Manufacturing, went to press. The reason for starting the publication was a straightforward one: to provide a forum for the presentation of the best technical articles on gear-related subjects from around the world. We wanted to give our readers the information they need to solve specific problems, understanding new technologies, and to be informed about the latest applications in gear design and manufacturing. The premise behind Gear Technology was also a straightforward one: the better informed our readers were about the technology, the more competitive they and their companies would be int he world gear market.
TECHNICAL ARTICLES | 1989-03-01

The Wafer Shaper Cutter

In 1985 a new tooling concept for high volume gear production was introduced to the gear manufacturing industry. Since then this tool, the wafer shaper cutter, has proven itself in scores of applications as a cost-effective, consistent producer of superior quality parts. This report examines the first high-production installation at the plant of a major automotive supplies, where a line of twenty shapers is producing timing chain sprockets.
VOICES | 1988-07-01

A Real Test

It is often easy for those outside of the gear industry to get the impression that nothing is changing in our business. After all, all illustrated bimonthly by the covers of this very journal the making of gears has been with us for centuries. However, nothing could be further from the truth.
VOICES | 1987-07-01

No Surprise

For the last few years, the market has been tough for the U.S. gear industry. That statement will cause no one any surprise. The debate is about what to do. One sure sign of this is the enormous attention Congress and the federal government are now placing on "competitiveness."
PUBLISHER'S PAGE | 1987-01-01

Industry Shows Shift Emphasis

A change has taken place within the industry that is going to have an enormous effect on the marketing, sales, and purchasing of gear manufacturing and related equipment. This change was the American Gear Manufacturers' Association, first biennial combination technical conference and machine tool minishow.
EVENTS | 1986-07-01

Technical Calendar

October 5-8, 1986 AGMA Fall technical Conference & Gearing Exhibit September 17-19, 1986 Ohio State University Gear Noise Seminar November 11-13, 1986 SME Gear Processing and Manufacturing Clinic November 19-21, 1986 Seminar: Gear System Design for Minimum Noise
TECHNICAL ARTICLES | 1986-03-01

CNC Gear Shaping

Two major processes used for cutting gears, hobbing and shaping. This article describes advanced machine design and cutter materials for gear shaping.
VOICES | 1985-11-01

Industry Forum

One of the current research activities here at California State University at Fullerton is systematization of existing knowledge of design of planetary gear trains.
EVENTS | 1985-03-01

Technical Calendar and Industry News

Events from SME and AGMA, along with news from the gear industry.
VOICES | 1985-01-01

Dear Editor

Congratulations from a number of readers who are impressed with the new magazine.
TECHNICAL ARTICLES | 1984-10-01

Endurance Limit for Contact Stress in Gears

With the publishing of various ISO draft standards relating to gear rating procedures, there has been much discussion in technical papers concerning the various load modification factors. One of the most basic of parameters affecting the rating of gears, namely the endurance limit for either contact or bending stress, has not, however, attracted a great deal of attention.
INDUSTRY NEWS | 1984-08-01

Industry News and AGMA Calendar

Herman Riccio, Chicago Gear Works President, to Retire; Gleason Opens MI Sales Office; American Pfauter hires Steve Peterson; plus AGMA's technical calendar for the Fall of 1984.
VOICES | 1984-05-01

Guest Editorial

At a time when there are many pressures on the Gear Industry and its representative Association, the American Gear Manufacturers Association, it seems particularly appropriate that Gear Technology - The Journal of Gear Manufacturing appears. AGMA is particularly pleased to have the opportunity to write the first editorial for this magazine.
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