Contact analysis can be used to calculate the transmission error and determine the profile modifications of a gear stage. In addition, a wide range of important gear-specific parameters can be calculated, such as tooth root stress, distribution of Hertzian pressure, oil film thickness, and many more.

Ruland recently expanded their range of quick clamping shaft collars with clamping lever to include bore sizes up to 3 inches or 80 mm. These shaft collars allow the user to install, remove, or reposition the collar without the use of tools. The user simply turns the lever to loosen and tighten the collar on the shaft.