Angular Contact Thrust Ball Bearings is made of two shaft ring, one seat ring with oil holes lubricating, one spacer,two columns of roller body and cage.Grinding the spacer ring's thickness can adjust the bearings' clearance and pretension.The contact angle for bearing is 60°,it is used for withstanding both radial and axial load(more) in two directions.This kind of bearing are widely used in high accuracy bearings on machines of grinder,boring machine,lathe machine,milling machine and drilling machine.This type of bearing has high accuracy, well rigidity, low temperature rise,high rotating speed and convenient loading,unloading,etc advantages.