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Thrust ball bearing comprises a blowout patch, a seat ring, steel balls and a holder. The ferrule matches axis is called blowout patch, while the ferrule matches housing is called seat ring. The bearing whose seat ring has a spherical fitting surface is provided with self-aligning function, and the effect of mounting error is reduced.
The thrust bearing is mainly used to be subject to axial load. It can transfer major axial load, but it can not be subject to radial load. This type of bearing is mainly applied on automotive steering gear and machine tool main shaft etc.