The common calculation methods according to DIN 3990 and ISO 6336 are based on a comparison of occurring stress and allowable stress. The influence of gear size on the load-carrying capacity is considered with the size factors YX (tooth root bending) and ZX (pitting), but there are further influences, which should be considered. In the following, major influences of gear size on the load factors as well as on the permissible tooth root bending and contact stress will be discussed.

Klingelnberg Hosts 6^th WZL Gear Conference in the USA 2016  Matthew Jaster, Senior Editor ...

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.

[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...

[starbox] Today I have tRead More

The complete Technical Calendar from the May 2012 issue of Gear Technology.

When you push 850 horsepower and 9,000 rpm through a racing transmission, you better hope it stands up. Transmission cases and gears strewn all over the racetrack do nothing to enhance your standing, nor that of your transmission supplier.

A method to extrapolate running gear bending strength data from STF results for comparing bending performance of different materials and processes.

This article presents a new spur gear 20-degree design that works interchangeably with the standard 20-degree system and achieves increased tooth bending strength and hence load carrying capacity.

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.