The basic fatigue life of a rotating deep-groove ball bearing is given as:        

      TEMPERATURE CORRECTION FACTOR

      If rolling bearings are used at high temperature, the hardness of the
      bearing steel decreases. Consequently the basic radial dynamic load rating
      C must be corrected:          

      Note: The temperature correction factor assumes that a lubricant is used  that is suitable for given temperature.

      GENERAL FATIGUE LIFE CORRECTION FACTORS

      The L10 preload life of a bearing is normally adjusted as follows,
      according to real-world operating conditions: