The permissible operating temperature for Kaydon Reali-Slim thin section bearings can be limited by:
- the dimensional stability of the bearing rings and balls
- the cage/separator
- the seals
- the lubricant
Thin section bearing rings and balls
Kaydon thing section bearings are heat stabilized for use from -55 to +120 °C (-65 to +250 °F).
Kaydon thing section bearings with rings and rolling elements made of M50 steel (Kaydon designation: M...) are are heat stabilized for > 120 °C (250 °F).
Cages/separators
The permissible operating temperature for cages/separators depends on their material:
- Brass, non-metallic composite, glass fibre reinforced PA66, phenolic laminate, steel, stainless steel, PEEK, PTFE: can be used at the same operating temperatures as the bearing rings and balls
- PA12: 80 °C (180 °F)
- Vespel SP-1 polyamide plastic: 260 °C (500 °F)
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.
Seal materials for higher temperatures are available on request.
Lubricants
Temperature ranges of lubricants frequently specified for Reali-Slim bearings are shown as follow.