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Temperature limits

The permissible operating temperature for combined needle roller bearings can be limited by:
  • the dimensional stability of the bearing rings and rolling elements
  • the cages
  • the lubricant
When temperatures outside the permissible range are expected, contact the SKF application engineering service.

Bearing rings and rolling elements

SKF needle roller bearings undergo a special heat treatment. The bearings are heat stabilized up to at least 120 °C (250 °F).

Cages

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

Lubricants

Temperature limits for greases used in capped combined needle roller 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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