Temperature limits

The permissible operating temperature for CARB bearings can be limited by:
  • the dimensional stability of the bearing rings
  • the cage
  • the seals
  • the lubricant
Where temperatures outside the permissible range are expected, contact the SKF application engineering service.

Bearing rings

The rings of CARB bearings are heat stabilized up to 200 °C (390 °F).


Steel or brass cages can be used at the same operating temperatures as the bearing rings. For temperature limits of polymer cages, refer to Cage materials.


The permissible operating temperature for seals depends on the seal material:
  • HNBR: –40 to +150 °C (–40 to +300 °F)
  • NBR: –40 to +90 °C (–40 to +195 °F)
    Temperatures up to 120 °C (250 °F) can be tolerated for brief periods.


Temperature limits for greases used in sealed CARB bearings are provided in table 1. For temperature limits of other SKF greases, refer to SKF greases.
When using lubricants not supplied by SKF, temperature limits should be evaluated according to the SKF traffic light concept.
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