Tapered roller bearing inner and outer rings with conical raceways, raceway with tapered roller between. If we extend the cone surface, finally meeting at one point on the center line of the bearing. Tapered roller bearings are mainly used to bear radial load mainly radial, axial joint load. The axial load decided by the contacting angle, the larger contacting angle, the greater the axial load capacity. Tapered roller bearing is the separable bearing, with roller and cage of the inner ring in the inner components, with the outer ring separately. Limit the types of bearing shaft or shell side axial displacement, does not allow a tilt axis relative shell hole. In the radial loads, will produce additional axial forces, therefore, generally supported in two bearings, the bearing outer ring and inner ring with the face should be relatively installation. The main application of such bearings: automotive front, rear, transmission, differential mechanism, pinion shaft, spindle, construction machinery, large agricultural machinery, railway vehicles, gear reduction, rolling mill roll neck small deceleration devices.