Failure Mode – Excessively Tight Fits
Brinelling. This is caused by excessive loading on the bearing. In this particular case
there were brinell marks arrayed equally spaced 360 degrees around the inner ring.
Wide ball path. This is typically caused by excessive interference fits. In this outer
ring rotating application the outer ring had a similar but slightly narrower ball path.
Modify dimensions and tolerances on housing/shaft to allow slight play in the
bearing even after the bearing is installed. Also, ensure that the housing/shaft are
manufactured to the specified tolerances. (See Mounting and Fitting guide in the
Technical Information section for suggested tolerances.)