In order to calculate an estimated life for a bearing you will need to use the Bearing Lifetime formula listed above. If your application involved purely a radial load applied to the bearing (no axial loading), then you can use the pure radial load to calculate the estimated bearing lifetime. In many situations, the application involves a combination of axial and radial loads. In these situations you may use the formulas and table below to combine the axial and radial loads into an Equivalent Radial Load that can be used in the bearing lifetime formula to calculate an estimated bearing life.

Metricbearing preload calculator

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a2 = Life correction factor for operating conditions. It has been empirically determined to have a value between 2.0 under ideal operating conditions and 0.2 where one or more of the following conditions may apply:

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