Over the past few months we've talked with a lot of gear manufacturers. Many of them tell us business is strong, while others are struggling with reduced demand. The difference between them isn't so much in the quality of their manufacturing operations, but rather trends in the end markets they serve.

While external involute gears are very tolerant of center distance variations, what are the center distance constraints for internal gears?

The complete Technical Calendar from the June/July 2012 issue of Gear Technology.

Induction hardening is widely used in both the automotive and aerospace gear industries to minimize heat treat distortion and obtain favorable compressive residual stresses for improved fatigue performance. The heating process during induction hardening has a significant effect on the quality of the heat-treated parts. However, the quenching process often receives less attention even though it is equally important.

The Raso 200 Dynamic has been developed to offer all the characteristics of a gear shaving machine with a competitive price.

I came back from Gear Expo in a pretty good mood, and judging by the smiles on the faces of exhibitors I saw, I'm not alone. In fact, the mood at Gear Expo 2011 was the best I've seen in recent memory.

Here are some of the new products and technologies available to attendees at Heat Treat 2011.

Our special advertising section brings you the highlights of Gear Expo 2011.