Terminology

GEAR TALK WITH CHUCK | 2018-04-25

The Long and Short of It

One of the problems with “tribal knowledge” is that the terminology can confuse those who are not fully immersed in that community. I have lost ...

GEAR TALK WITH CHUCK | 2018-02-07

Seven Stages of Expertise

There is no “gear expert” merit badge for you to earn. I have posted before about the limited amount of gear education included in the standard eng...

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...

GEAR TALK WITH CHUCK | 2018-01-11

The Beginning of Wisdom

Faithful followers of this blog can complete that mantra without prompting, but for new readers — the beginning of wisdom is calling things by thei...

GEAR TALK WITH CHUCK | 2018-01-09

How to Begin?

So, you want to teach people about gears. It is a huge topic with many interesting and complicated facets to it. A person could spend their entire ...

GEAR TALK WITH CHUCK | 2017-02-14

Faster is Not Always Better

That old “Overhead” article reminded me of what a shock it was when we first moved into cellular manufacturing. After years of investigating ways t...

GEAR TALK WITH CHUCK | 2017-01-10

Language Barrier

I have great admiration for people who can speak multiple languages, a skill that had eluded me despite two fairly serious efforts to learn a secon...

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 ...

GEAR TALK WITH CHUCK | 2016-09-22

Articles Wanted 

  In a short chat in the Gear Technology booth at the International Machine Tool Show the topic came up of what sort of articles o...

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 | 2016-07-19

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 | 2016-06-23

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.”...

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 ...

GEAR TALK WITH CHUCK | 2015-09-10

A Century of Gears

The American Gear Manufacturers’ Association [AGMA] will celebrate its 100^th Anniversary in 2016. The party will begin with the Fall Tec...

GEAR TALK WITH CHUCK | 2015-05-05

Building Your Team

The National Football League (NFL) held its annual draft of college players here in Chicago this past week. It is probably the most publicized huma...

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 | 2014-02-20

Each One Teach One

[starbox] I have posted previously about the need for mentors and teachers in the gear trade. Once a year the National Society of Professional E...

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...

GEAR TALK WITH CHUCK | 2014-01-14

Who Taught You About Gears?

[starbox]

"The beginning of wisdom is calling things by their proper name" -- Chinese proverb

Who taught you about gears...

FEATURE ARTICLES | 2013-05-01

Delivering Big Gears Fast

When a customer needed gears delivered in three weeks, here’s how Brevini Wind got it done.

TECHNICAL ARTICLES | 2013-03-01

Recent Inventions and Innovations in Induction Hardening of Gears and Gear-Like Components

This paper examines the expanding capabilities of induction hardening of gears through methods like spin hardening or tooth-by-tooth techniques.

PRODUCT NEWS | 2011-10-01

LMT Fette Introduces SpeedCore

New material technology allows for more efficient and flexible hobbing.

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.

PRODUCT NEWS | 2011-05-01

Dearborn Precision Puts Dual Purpose Zeiss CMM to the Task

When parts you manufacture pass through numerous processes such as deep hole drilling, machining, hobbing and grinding, a CMM is essential when your customers require 100 percent in-process and final inspection.

EVENTS | 2007-11-01

Gear Expo 2007 Recap

The general impression—whether encouraged by AGMA or developed anecdotally—is that Gear Expo 2007 was a reasonable—though certainly relative—success

ADDENDUM | 2007-07-01

Were Your Childhood Memories in HIGH GEAR

Loyal Gear Technology reader and Interstate Castings vice president Greg Bierck came across “High Gear” at a vintage toy store in Indianapolis, IN.

TECHNICAL ARTICLES | 2006-01-01

Investigation of the Noise and Vibration of Planetary Gear Drives

With the aim of reducing the operating noise and vibration of planetary gear sets used in automatic transmissions, a meshing phase difference was applied to the planet gears that mesh with the sun and ring gears.

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.

INDUSTRY NEWS | 2000-07-01

Determining Lead Error on a Crowned Pinion

Q&A is your interactive gear forum.

TECHNICAL ARTICLES | 1998-11-01

The Basics of Gear Metrology and Terminology Part II

In the last section, we discussed gear inspection; the types of errors found by single and double flank composite and analytical tests; involute geometry; the involute cam and the causes and symptoms of profile errors. In this section, we go into tooth alignment and line of contact issues including lead, helix angles, pitch, pitchline runout, testing and errors in pitch and alignment.

TECHNICAL ARTICLES | 1998-09-01

The Basics of Gear Metrology and Terminology Part I

It is very common for those working in the gear manufacturing industry to have only a limited understanding of the fundamental principals of involute helicoid gear metrology, the tendency being to leave the topic to specialists in the gear lab. It is well known that quiet, reliable gears can only be made using the information gleaned from proper gear metrology.

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.

INDUSTRY NEWS | 1989-01-01

Spur Gear Fundamentals

Gears are toothed wheels used primarily to transmit motion and power between rotating shafts. Gearing is an assembly of two or more gears. The most durable of all mechanical drives, gearing can transmit high power at efficiencies approaching 0.99 and with long service life. As precision machine elements gears must be designed.

TECHNICAL ARTICLES | 1987-09-01

Effects of Hob Quality and Resharpening Errors on Generating Accuracy

The modern day requirement for precision finished hobbed gears, coupled with the high accuracy characteristics of modern CNC hobbing machines, demands high tool accuracy.

VOICES | 1985-09-01

Industry Forum

Your May/June issue contains a letter from Edward Ubert of Rockwell International with some serious questions about specifying and measuring tooth thickness.

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.