Thrust bearing 4 x 10 x 3 mm High centrifugal forces cannot be absorbed by a radial bearing. For that application we use a 3-part thrust bearing (axial bearing) consisting of a loose ring, a ball cage and a fixed ring: the parts are installed in this sequence. The dimensions of a ballrace mean: inside diameter (I.D.) x outside diameter (O.D.) x thickness. Thrust bearing 4 x 10 x 3 mm 3-part pack of 1