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.

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

They only let the Addendum team on the show floor for one day (they said it was something to do with their liability insurance...), but here's what our intrepid team of gear fanatics noticed at IMTS 2012.

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

The latest machines, tooling and technology for gear grinding were featured at IMTS 2012.

Our up-front column highlighting what's online this issue.