Single-direction thrust ball bearing 51 series

brasssteel

The single direction thrust ball bearings consist of two washers with raceways for one row of balls with a cage. The washers have flat seating surfaces. They must be supported in order to spread the load on the balls evenly. These bearings are designed to carry axial forces acting in one direction only. They cannot carry radial forces. The boundary dimensions of the thrust ball bearings indicated in the dimension tables correspond to the international dimensional plan ISO 104. The designation of the bearings in the basic design is indicated in the dimension tables. The differences from the basic design are designated by additional symbols in accordance with the STN 02 4608. The thrust ball bearings have strip steel cages which are not marked. For special applications, some bearings types are available with a machined brass cage (M). Bearings with these cages are only made to order. Thrust ball bearings are usually produced in normal tolerance class P0 (symbol P0 is not shown). In special cases of arrangement, demanding higher accuracy, bearings are produced in higher tolerance classes P6. Tolerances of accuracy, deviations of dimensions and operation are stated in ISO STN 199.