Wheel Hub: Description and Operation

The rear axle consists of a knuckle, rear hub, unit bearing and axle shaft. The unit bearing is press-fitted to the rear axle shaft and bolted to the knuckle. Also, the unit bearing utilizes the same type of double row angular contact ball bearing as does the front axle. On vehicles with ABS, a ABS rotor for detecting the vehicle speed is located on the rear axle shaft, and a speed sensor is located on the knuckle.