The presence of significant errors in the two-flank roll test (a work gear rolled in tight mesh against a master gear) is well-known, but generally overlooked.

Transmission error (TE) is recognized as one of the most important causes of gear acoustic emissions...

Forty years ago, the plastics industry was practically in its embryonic phase...

The two-flank roll test measures kickout (tooth-to-tooth composite error) and tooth thickness. In this article, it will be shown that measured values vary with the number of teeth on the master gear.

The complete Product News section from September/October 2006.

Wait a minute, we don't measure pitch diameter. We're sometimes asked to measure it by customers, though, especially ones with older drawings.

The complete Product News from July/August 2005.