The permissible operating temperature for angular contact ball bearings can be limited by:
- the dimensional stability of the bearing rings and balls
- the cage
- the seals
- the lubricant
Where temperatures outside the permissible range are expected, contact SKF.
Bearing rings and balls
The bearings are heat stabilized up to at least 150 °C (300 °F).
Steel or brass cages can be used at the same operating temperatures as the bearing rings and balls. For temperature limits of polymer cages, refer to Cage materials.
The permissible operating temperature for NBR seals is –40 to +100 °C (–40 to +210 °F). Temperatures up to 120 °C (250 °F) can be tolerated for brief periods.
Typically, temperature peaks are at the seal lip.
When using lubricants not supplied by SKF, temperature limits should be evaluated according to the SKF traffic light concept.