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Gear Life

TECHNICAL ARTICLES | 2025-02-27

Very High Cycle Fatigue Testing of AMS 6308 Steel

In this paper, ultrasonic fatigue testing results for “core hardened” AMS 6308 gear steel are presented. AMS 6308 is a gear and bearing steel with high tempering resistance and high hot hardness case targeted to high temperature applications

EVENT | 2023-09-15

Aachen Forum on Gear Production

In this seminar, attendees will learn about gearing, electromobility and their interrelationships. How gearing can increase the efficiency and performance of electromobility, and which components are needed for this. Also, a detailed look at the design and manufacture of gears for electric vehicles. Attendees will explore the challenges of gearing for electromobility, such as adapting to hard-to-reach places, increasing durability, and reducing energy consumption, and discuss how grinding technology and tool design must meet requirements to improve the properties and improve the quality of gears for electric vehicles. The Aachen Forum on Gear Production (AFGP) is held annually in alternation with the Aachen Conference on Gear Production (ACGP). While the Forum at the RWTH Aachen Campus is dedicated to a technical focus (2023 the interlocking in the E-Mobility sector) the conference, on the other hand, is dedicated to various facets of gear technology.

EVENT | 2023-05-12

Motion + Power Technology Expo 2023

Produced by AGMA, Motion + Power Technology Expo (Detroit) is a three-day show that connects professionals looking for motion power solutions with manufacturers, suppliers, and buyers. Attendees will find new power transmission parts, materials, and manufacturing processes. Buy, sell, and get business done with organizations in aerospace, automotive, agricultural, energy, construction and more.

INDUSTRY NEWS | 2022-02-04

Nitrex to Present Gear Life and Performance Webinar

The webinar “Improvement of Gear Life and Performance” by Nitrex takes place Thursday, March 3, 2022. This presentation is a ...

GEAR TALK WITH CHUCK | 2019-05-24

Finding the Limits

Jim Richard’s account of his journey from youthful experimenter to designer of cutting edge gear processing equipment illustrates the amazing thing...

GEAR TALK WITH CHUCK | 2019-01-03

How Did You Get in Here?

Happy New Year! In just a few weeks we will begin our SIXTH year of this blog. While it has been great fun posting about the gear trade with you, w...

TECHNICAL ARTICLES | 2018-06-01

Predicting Life on Through Hardened Steel Rack and Pinion for Jacking Applications in the Offshore Industry

Designing and sizing a rack-and-pinion system, per AGMA and ISO gear calculation.

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)?

TECHNICAL ARTICLES | 2018-05-01

Prediction of Dynamic Factors for Helical Gears in a High-Speed Multibody Gearbox System

Accurate prediction of gear dynamic factors (also known as Kv factors) is necessary to be able to predict the fatigue life of gears. Standards-based calculations of gear dynamic factors have some limitations. In this paper we use a multibody dynamic model, with all 6 degrees of freedom (DOF) of a high-speed gearbox to calculate gear dynamic factors. The findings from this paper will help engineers to understand numerous factors that influence the prediction of dynamic factors and will help them to design more reliable gears.

GEAR TALK WITH CHUCK | 2016-01-28

Room for Improvement

Previous blogs here have celebrated the great advances made in gear industry design capabilities and machine tools. As the “paper of record” for th...

TECHNICAL ARTICLES | 1998-01-01

Influence of Gear Design on Gearbox Radiated Noise

A major source of helicopter cabin noise (which has been measured at over 100 decibels sound pressure level) is the gearbox. Reduction of this noise is a NASA and U.S. Army goal. A requirement for the Army/NASA Advanced Rotorcraft Transmission project was a 10 dB noise reduction compared to current designs.

INDUSTRY NEWS | 1995-01-01

CNC Basics

NC and CNC machines are at the heart of manufacturing today. They are the state-of-the-art equipment everybody has (or is soon going to get) that promise to lower costs, increase production and turn manufacturers into competitive powerhouses. Like many other high tech devices (such as microwaves and VCRs), lots of people have and use them - even successfully - without really knowing much about how they operate. But upgrading to CNC costs a lot of money, so it's crucial to separate the hype from the reality.