Temperature limits

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).

Cages

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 Cages.

Seals

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.

Lubricants

Temperature limits for greases used in capped SKF angular contact ball bearings 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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