By the temperature correction bearing basic dynamic load rating

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Rolling use at high temperatures, bearing decrease in hardness, lower than at normal temperature fatigue life. So, the basic dynamic load rating to estimate smaller. Accordance with the following amendments. precision ball bearing
Ct = ft · C
Formula:
Ct: use a temperature correction basic rated dynamic load (N) (kgf)
ft: temperature coefficient (125 ° C, the coefficient is 1; 150 degrees, the coefficient is 1; 175 degrees, the coefficient is 0.95; 200 degrees, the coefficient of 0.90; 250 degrees, a coefficient of 0.75) spherical roller bearing
C: Basic dynamic load (N) (kgf)
Note, bearing temperatures above 120 degrees, the large bearing size changes, so the size stabilizing treatment. In addition, the basic dynamic load rating of the bearing dimensionally stable processing, sometimes below the bearing size table records the basic dynamic load rating.