Four-point contact ball bearing

 Four-point contact ball bearing is a separable bearing, or a set of angular contact ball bearings that can bear bidirectional axial load. The inner and outer ring raceways are peach-shaped sections. When there is no load or pure radial load, the steel ball and the ring appear as four-point contact, which is also the origin of this name.

When only the pure axial load acts, the steel ball and the ferrule become two-point contact, which can bear the bidirectional axial load. Four-point contact ball bearings can also

Bearing moment load, it has the functions of single row angular contact ball bearing and double row angular contact ball bearing. Four-point contact ball bearings can only ensure normal operation when they form two-point contact. Therefore, it is generally suitable for those occasions where there is two-point contact under pure axial load or synthetic load with large axial load. The four-point contact ball bearing has a high limit speed and is also suitable for those high-speed running occasions.

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