Rsto and sto supporting rollers

Rsto is a supporting roller without inner ring, with cage, arc rolling surface and without inner ring. It can directly run on the quenched shaft as a raceway. Sto is an outer ring without retaining edge, with cage, arc rolling surface, with inner ring supporting roller. The inner ring and outer ring and their matching needle cage components can be installed respectively. Since rsto and sto type supporting rollers do not have retaining edges and end face retaining rings, they must be installed with axial guidance, and their guide surfaces are rarely precision machined.

It can be processed into cylindrical rolling surface according to customer requirements, and it is indicated by suffix: "X", for example: rsto6tnx, sto6tnx