The automobile wheel hub bearing is composed of two sets of conical roller bearings or ball bearings. The installation, oil, seal and clearance of the bearings are carried out on the automobile production line.
This structure makes it difficult to assemble, high cost and low reliability in the automobile production plant, and it needs to clean, oil and adjust the bearings when maintenance of maintenance.
SKF wheel hub bearings http://www.alierbearings.com/brand/skf/index49.html  unit is in the standard angular contact ball bearings and tapered roller bearings developed 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.
In the past, SKF wheel hub bearings are used in pairs using single row taper roller or ball bearing.
With the development of technology, the use range and usage of SKF wheel hub bearings unit has been increasing, and now it has reached the third generation:
The first generation is composed of two - row angular contact bearings.
In the second generation, there is a flange which is used to keep the bearing fixed. It is easy to set the bearing sleeve to the wheel shaft with nut.
Make the car maintenance easy.
The third generation SKF wheel hub bearings unit adopts the bearing unit and the holding brake system ABS.
The hub unit is designed to have inner flange and outer flange, and the inner flange is bolted to the drive shaft, and the outer flange is installed in the whole bearing.
SKF wheel hub bearings is an important moving part of automobile.
The hub bearing is responsible for reducing the friction resistance during the operation of the chassis and maintaining the normal operation of the vehicle.
If the hub bearing fails, it can cause noise, bearing heat and other phenomena, especially the front wheel is more obvious, which can lead to dangerous phenomena such as out of control.
Therefore, hub bearings must be maintained on time.