Too large radial or axial internal clearance in a bearing

Considerations

• Excessive radial or axial internal clearance can increase noise levels because the rolling elements are able to move freely outside the load zone.
• In addition, too much clearance can also have a detrimental effect on bearing performance because of sliding of the rolling elements.

Actions

• The use of springs or wave washers can provide an adequate axial load to keep the rolling elements loaded at all times (mainly in applications with ball bearings).
• Review the needed initial clearance in the bearing; adjust the clearance selection where appropriate.