Automotive industry embraces proven yet evolving technology of plastic gears.

This paper introduces mandatory improvements in design, manufacturing and inspection - from material elaboration to final machining - with special focus on today's large and powerful gearing.

A road map is presented listing critical considerations and optimal use of materials and methods in the construction of large gears.

The complete Product News section from the January/February 2013 issue of Gear Technology.

Understanding the morphology of micropitting is critical in determining the root cause of failure. Examples of micropitting in gears and rolling-element bearings are presented to illustrate morphological variations that can occur in practice.

The complete Industry News section from the October 2012 issue of Gear Technology.

An experimental and theoretical analysis of worm gear sets with contact patterns of differing sizes, position and flank type for new approaches to calculation of pitting resistance.

What are the manufacturing methods used to make bevel gears used in automotive differentials?

Gear tooth wear and micropitting are very difficult phenomena to predict analytically. The failure mode of micropitting is closely correlated to the lambda ratio. Micropitting can be the limiting design parameter for long-term durability. Also, the failure mode of micropitting can progress to wear or macropitting, and then go on to manifest more severe failure modes, such as bending. The results of a gearbox test and manufacturing process development program will be presented to evaluate super-finishing and its impact on micropitting.

Gleason-K2 Plastics eliminates weld lines with no machining.