The bearing is not clamped securely and the fillet is too large

The bearing is not clamped securely against mating components

Considerations

• A bearing that is not properly clamped against an adjacent component might not attain the necessary internal clearance or preload.
• This condition can increase noise levels and have a negative impact on bearing performance.

Examples

• A pair of matchable angular contact ball bearings that are not properly clamped.
• This can increase axial clearance in the bearing pair, which can lead to ball sliding damage (smearing), increased noise levels, and lubrication problems.
• Not properly clamping the bearing will also affect positioning of the shaft.

Action

• Make sure that the locking device positions both bearings against their shaft shoulder or spacer.

Fillet (corner radius) too large

Considerations

• If the fillet of an adjacent component is too large, the bearing will not be supported properly.
• This condition can distort the bearing rings.
• The bearing will not achieve the proper internal clearance (preload). 

Action

• Machine the fillet to obtain the proper support.