The permissible operating temperature for spherical roller bearings can be limited by:
- the dimensional stability of the bearing rings
- the seals
When temperatures outside the permissible range are expected, contact the SKF application engineering service.
SKF spherical roller bearings undergo a special heat treatment. The bearings are heat stabilized up to at least 200 °C (390 °F) for 2 500 h, or for brief periods at even higher temperatures.
The permissible operating temperature for seals depends on the material:
NBR seals: –40 to +90 °C (–40 to +195 °F)
Temperatures up to 120 °C (250 °F) can be tolerated for brief periods.
- HNBR seals: –40 to +150 °C (–40 to +300 °F)
FKM seals: –30 to +200 °C (–20 to +390 °F)
When using lubricants not supplied by SKF, the temperature limits should be evaluated according to the SKF traffic light concept.