Spherical roller bearing roller bearings are self aligning function, but is also very strong. Spherical Roller Bearings are two rows of rollers, in the outer ring, there is a sharing of spherical roller Road, and there are two Inner Raceway, with the bearing axial tilt into a relative perspective. This is the bearing attractive design features, in many demanding applications can not be replaced.1:Material:GCr15,GCr15SiMn 2)Quality standard: ISO9001:2000 3)ID size:80mm-1500mm