The car wheel bearing of the past is the most used in pairs of single row tapered roller or ball bearing.
With the development of technology, the use of car wheel hub unit cars have been widely. The scope of use of hub bearing unit and use the growing, has now developed to the third generation.
The first generation is composed of double row angular contact bearing components. The second generation in the outer raceway has a flange bearing for fixed, will be simple bearing sleeve to the shaft is fixed by the nut, making the car repair easier.
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