Wheel hub bearing is the main function of bearing and provide accurate guide
to the
rotation of the wheels, it was under axial load and bear radial load, is a very
important component. Traditional car wheel with bearing is combined by two sets
of tapered roller bearings or ball bearings, and the installation of the
bearing, oil seal and clearance adjustment is carried out on the auto
production line. This structure makes it in the car factory assembly
difficulty, high cost and poor reliability, and when the car in pits
maintenance, also need to clean, oil bearing and adjustment. 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.
