This kind of bearings with circular conicai roller, roller guided by the inner ring large rib design makes the inner raceway, outer raceway and the roller rolling surface of the cone vertex intersect at the center line of bearing point single row bearings can bear radial load and axial load of one-way,double row bearings can bear radial load and bi-directional axial load applied to bearing heavy loads and shock loading.By contact with chest of the different divide into small cone angle,the cone angle and the three types of large cone angle,the greater the contact angle the greater the axial load capacity.Ourter and inner components detachable, easy to disaasemble  the rear auxiliary code "J"or "JR" international interchangeability of bearing more than the use of such bearings Inch series products for the retainer;steel stamping cage ,forming synthetic resin cage ,pin type cage main purposes :cars; front,rear, transimission,differential pinion shaft.Machine Tool Spindle,construction machinery,large agriculture machinery,railway vehicles gear reduction rolling mill roll neck and decleleration devices.