Wheel hub bearing introduce
The main function of hub bearing is to bear the load and provide accurate guidance for the rotation of the hub. It bears both axial load and radial load, and is a very important part. The traditional automobile wheel bearings are composed of two sets of tapered roller bearings or ball bearings. The mounting, oiling, sealing and clearance adjustment of the bearings are carried out on the automobile production line.
This structure makes it difficult to assemble in the automobile factory, high cost, poor reliability, and the automobile still needs to be cleaned, oiled and adjusted during maintenance. Wheel hub bearing unit is in the standard angular contact ball bearings and tapered roller bearings, on the basis of it will be two sets of bearing as a whole, has the assembly clearance adjustment performance is good, can be omitted, light weight, compact structure, large load capacity, for the sealed bearing prior to loading, ellipsis external wheel grease seal and from maintenance etc, and has been widely used in cars, in a truck also has a tendency to gradually expand the application.