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Temperature limits

The permissible operating temperature for support rollers can be limited by:

  • the dimensional stability of the bearing rings and rolling elements
  • the cage
  • the seals
  • the lubricant
When temperatures outside the permissible range are expected, contact the SKF application engineering service.

Bearing rings rollers

SKF support rollers undergo a special heat treatment. The bearings are heat stabilized up to at least 140 °C (280 °F).


Steel cages can be used at the same operating temperatures as the bearing rings and rolling elements. For temperature limits of PA66 cages, refer to Cage materials.


The permissible operating temperature for seals depends on the material:

  • NBR seals:
    –40 to +100 °C (–40 to +210 °F)
    Temperatures up to 120 °C (250 °F) can be tolerated for brief periods.
  • PA66 sliding rings:
    –30 to +100 °C (–20 to +210 °F)


Temperature limits for greases used in SKF track runner bearings are provided in table 1. Temperature limits for other SKF greases are provided under Lubrication.
When using lubricants not supplied by SKF, the temperature limits should be evaluated according to the SKF traffic light concept.
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