Taper Roller Bearings belong to separated bearing, constituted by inner ring, outer ring, rollers and cage;Withstand huge radial load and axial load, pass one-way axial load only;The single row tapered roller bearings are used commonly;The single row taper roller bearings are divided into single row taper roller bearing, double row taper roller bearing and four-row taper roller bearing;The taper roller bearing is used in automobile, rolling mill, mining, metallurgical industry,plastic machinery , etc