Thrust ball bearing is a separate type bearing, contact Angle is 90°, can only withstand axial load, low limit speed.

This kind of bearing is often used in vertical drilling machine, vertical water pump, lathe thimble seat, machine tool spindle, automobile clutch, worm reducer, jack, valve, rotary table of drilling machine, crane and crane hook and other machinery.

Thrust ball bearings are unidirectional thrust ball bearings and bidirectional thrust ball bearings. In addition to the structure type with flat seat ring, there are structural types with spherical seat ring and gasket.

Main structural type

(1) One-way thrust ball bearings

This kind of bearing can only bear axial load in one direction, which can limit one direction and axial displacement of shaft and housing.

(2) bi-directional thrust ball bearing

The bearing can bear axial loads in both directions and can limit the axial movement in both directions of the shaft and the housing.

The contact Angle of this kind of bearing is greater than 45° and less than 90°, and it can bear unidirectional or bidirectional combined loads mainly in axial direction.Unidirectional bearings are usually used after applying preload on two or more bearings in pairs.Contact Angle of 60° thrust angular contact ball bearings, used as machine precision ball screw bearings.Bidirectional bearing is a kind of high precision bearing specially designed as the spindle of machine tool. It can bear bidirectional axial combined load, with high rigidity and high speed.

This kind of bearing is also used in automobile steering gear.

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