Wheel bearing (bearing hub) is the main role of bearing and to provide a precise guide wheel rotation, it is not only to withstand the axial load and bear the radial load, is a very important part of the. The traditional automobile wheel bearing is composed of two sets of taper roller bearing and ball bearing combination, bearing installation, lubrication, sealing and clearance adjustment are in the automobile production line. This structure allows the in automobile production factory assembly difficulty, high cost, poor reliability and car maintenance point of maintenance, also need to cleaning, oiling and adjustment of the bearing. Hub bearing unit is in the standard angle contact ball bearings and tapered roller bearings, based on the developed, it will two sets of bearings do as one, with assembling properties, can be omitted clearance adjustment, light weight, compact structure, large load capacity, sealed bearings can advance into the grease and the omission of the external wheel seal and free of maintenance, etc., has been widely used in cars, in the truck and gradually expand the application of the trend.

 密封形式（Seal Type)A   密封形式（Seal Type)B     密封形式（Seal Type)C     密封形式（Seal Type)D

密封形式（Seal Type)E      密封形式（Seal Type)F     密封形式（Seal Type)G      密封形式（Seal Type)