Tapered roller bearings are separable conical bearings, inner and outer rings have tapered raceway. These bearings are loaded according to the number of columns roller into single row, double row and four row tapered roller bearings, such as crossed roller bearings different structural types. Single Row Tapered Roller Bearings can support radial load and axial load in one direction. When the bearing radial load, will produce an axial component, so when you need another can withstand axial force in the opposite direction of the bearing to be balanced.