FIRST-GENERATION WHEEL BEARING Wheel bearing is an important part of automobile load and rotation, which is used to provide precise guide for bearing and turning of wheel. It not only bears axial load, but also bears radial load.The first generation wheel bearing is developed on the basis of standard angular contact ball bearing and tapered roller bearing.It integrates two kinds of bearings, and has the advantages of good assembly performance, omitting clearance adjustment, light weight, compact structure, large load capacity, pre filling grease for sealed bearing, omitting external hub sealing and avoiding maintenance.