Product Overview The 51112 Single-Direction Thrust Ball Bearing is engineered to sustain heavy thrust or axial loads in one direction, operating with exceptional running accuracy and minimized power loss. It consists of a shaft washer, a housing washer, and a high-strength ball and cage assembly. This bearing is widely used in vertical shafts, rotating turn-tables, and heavy power transmission systems where rigid axial positioning and low friction torque are strictly required