THIRD-GENERATION WHEEL BEARING The third generation of automobile wheel bearing is further optimized based on the previous two generations, install the core shaft with bearing inner ring together,and with the external flange together assembled into a wheel hub unit.,bring compact structure, enhance the strength, reduce weight and save the space and install more convenient. Now more and more vehicles adopt the third generation wheel hub units. With more higher and higher of vehicle safety performance, the wheel hub units are integrated with ABS, which makes the installation more convenient and fast, reduces the requirements for the installation personnel, and improves the usage life.