https://www.zwabearings.com/products/thrust-ball-bearings/ Thrust Ball Bearings Thrust ball bearing china (TBB) is a type of ball bearing primarily designed for axial loads, allowing rotary motion while supporting axial forces. It owns the same features of other ball bearings, i.e. permitting rotation among the parts. Thrust ball bearing is composed of housing ring, shaft ring, cage, and balls.All Rights Reserved