Spherical roller bearing is in the two groove of the inner ring and outer ring raceways between spherical bearing assembly, a drum shaped roller. Spherical roller bearing with two rollers, mainly bear radial load, but also can withstand axial load in either direction. It has high radial load capacity, especially for heavy or vibrating loads, but it can't bear pure axial load. The bearing outer ring raceway is spherical, so its aligning performance is good, which can compensate the coaxial error. It is mainly used for papermaking machinery, deceleration device, railway vehicle axle, rolling mill gear box bearing seat, rolling mill roller, crusher, vibrating screen, printing machinery, woodworking machinery, reducer, vertical belt seat adjustment bearing.