Single-row radial needle roller and cage assembly, this kind of bearing only has a group of radial needle and retainer assembly. With small outside diameter size, it is suitable for the parts, where the radial sizes are specially limited, used for bearing the radial load.

Double-row radial needle roller and cage assembly, this kind of bearing, since it has not collar, the surface of journal and the surface of hole at the housing are directly acted as rolling surface with surface hardness HRC60 and surface roughness Ra no more than 0.63μm.

In order to satisfy the requirement of main machine, this kind of bearing can be made in split bearing, convenient for mounting.

Main structural forms: