we are a professional Chinese exporter of Thrust Ball Bearings and we are looking forward to your cooperation. Thrust ball bearings by seat, shaft ring and ball retainer assembly is composed of three parts. The shaft with the said shaft ring, matched with a shell called seat. Thrust ball bearing with high speed operation may withstand thrust load design, with the ball rolling by roll channel washer like rings. The ferrule for saddle shape, therefore, the thrust ball bearings are divided into flat seat type and self-aligning spherical cushion type two types.