Equivalent bearing loads

When determining the equivalent bearing load for preloaded angular contact ball bearings, preload must be taken into account. Depending on the operating conditions, the axial component of the bearing load Fa for a bearing pair, arranged back-to-back or face-to-face, can be determined approximately from the following equations.

For bearing pairs under radial load and mounted with an interference fit

For bearing pairs under radial load and preloaded by springs

For bearings under axial load and mounted with an interference fit

For bearing pairs under axial load and preloaded by springs

where


Fa=axial component of the bearing load [N]
Gm=

preload in the mounted bearing pair [N] (→ Preload in mounted bearing sets)

For S70 .. W series bearings, contact the SKF applications engineering service.

Gsprings=preload given by the springs [N] (for spindle applications, the bearing rings subjected to spring load must be free to move axially)
Ka=external axial force acting on the bearing arrangement [N]

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