Aerospace bearing

[1] Typically, special attention is given to the material specification, non-destructive testing, and to the traceability of the bearing (a system of documents that enables an engineer to trace a bearing, typically back to its manufacturing batch and material supply).

The pressed steel or moulded retainers found on mass-produced bearings are not used.

In wing control surface applications temperatures as low as −55 °C (−67 °F) may be encountered.

Bearings are a vital factor in many products and assemblies and their performance is often monitored continuously.

In jet engines the oil supply is monitored to detect the presence of metallic debris that could identify a failure either of the bearings or of other components whose failure may contaminate the bearings.