Traditional automotive wheel bearing by two sets of tapered roller bearings or ball bearings combination, bearing installation, oiled seals and clearance adjustment is carried out in a car production line. This structure makes it in automobile production plant assembly difficulties, high costs, poor reliability, and maintenance of the car at the service points, also need to be cleaned bearings, oiled and adjusted. Developed on the basis of the wheel bearing unit is the standard angular contact ball bearings and tapered roller bearings on
, It will be two sets of bearings as a whole, with good assembly performance, you can omit clearance adjustment, light weight, compact structure, large load capacity, can be pre-loaded to grease sealed bearings, hub wheel and external seal omitted from maintenance etc., have been widely used in cars, the truck also has a tendency to gradually expand the application.
Bearing is the other parts on the shaft will produce relative motion, used to reduce friction coefficient during power transmission and keep the machine shaft center fixed position, its main function is to support the rotary body, in order to reduce the equipment in the transmission process of mechanical load friction coefficient. According to the motion of the frictional properties of different components, bearings can be divided into two types of rolling bearings and sliding bearings.
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