1.wheel hub bearing BW77137001
2.material:steel,iron
3.made by hot extrusion

    The main role of wheel hub bearings is to turn the wheels and to provide precise guidance , they can be under both axial load and radial load, is a very important component.  Wheel bearings assemble with a good performance. you can omit the clearance adjustment, light weight, compact body, load capacity. Now wheel bearings are widely used in cars.