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Performance and operating conditionsBearing type and arrangementBearing sizeLubricationOperating temperature and speedBearing specificationBearing executionSealing, mounting and dismounting

Rolling bearings must be adequately lubricated to operate reliably. The lubricant is required to reduce friction, inhibit wear, protect the bearing surfaces against corrosion and may also be needed to provide cooling. This section describes: For information on lubrication of sealed bearings, refer to the relevant product sections.

How lubrication relates to other selection criteria

Lubrication selection and lubricant properties greatly influence the operating temperature, which in turn influences:

  • whether you should use grease or oil
  • the relubrication interval required for grease
  • whether oil lubrication is necessary, because circulating oil can be used to remove heat 
  • the lubrication condition – the viscosity ratio, κ, which influences the bearing size selection based on SKF rating life
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