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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 rollers
  • the cage
  • the seals
  • the lubricant
Where temperatures outside the permissible range are expected, contact SKF.

Bearing rings and rollers

SKF support rollers are heat stabilized up to at least 140 °C (280 °F).

Cages

Steel cages can be used at the same operating temperatures as the bearing rings and rollers. For temperature limits of PA66 cages, refer to Cages.

Seals

The permissible operating temperature for seals depends on the seal material:

  • NBR: –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)
Typically, temperature peaks are at the seal lip.

Lubricants

Temperature limits for greases used in SKF support rollers are provided in table 1. For temperature limits of other SKF greases, refer to Selecting a suitable grease.
When using lubricants not supplied by SKF, temperature limits should be evaluated according to the Traffic light concept.
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