System Integration of Thin Section Ball Bearings

Bearings come in all sorts of shapes, sizes, and configurations.  As do the systems they are installed in.  Some bearing design families are more affected by the system around them than others.  Arguably one of the most affected by the system around it is the thin section ball bearing design series. 

As the name would imply, thin section ball bearings have a relatively thin cross-section in relationship to their size.  This results in a greater potential for bearing rings to deflect, changing internal geometry, when fit-up into a system.  Understanding the performance impact system integration has on a thin section ball bearing is critical.  It can impact bearing life, stiffness, torque, and multiple other performance aspects. 

The intent of this white paper is to provide a detailed methodology for determining change in internal clearance of thin section ball bearings due to fit up.  It should be noted that this methodology is not limited to just the thin section balls bearing series, but can be used for all ball bearing series, particularly the torque tube ball bearing series.

This white paper describes the mathematical physics of that process and includes an example of an aerospace gimbal system that’s used typically for laser or optical mounts. Request help from Schatz with bearing design and integration. 

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