The WHA is located between the brake drums or discs and the drive axle. A wheel is bolted on it. Depending on the construction, the end of the hub comes equipped with the splined teeth. They mate the teeth on the axle shaft. The axle hub spins along with the wheels bolted to it and provide power to the wheels in order to rotate. A roller bearing between the axle hub and axle shaft ensures easy rotation of the non-drive wheels. On the axle side, it is mounted to the holding bracket from the chassis; on the disc side, the wheel is mounted to the bolts of the WHA. When replacing, a wheel hub assembly should be torqued to the vehicle's specifications to prevent failure.

The clutch release bearing is installed between the clutch and the transmission, and the release bearing seat is loosely set on the tubular extension of the bearing cover of the first shaft of the transmission, and the shoulder of the release bearing is always pressed against the separation fork through the return spring, and is returned to the last position, and the separation lever end (separation finger) maintains a clearance of about 3~4mm

Wheel bearing are one of the most crucial components of a car's suspension. Wheel hub bearing is used to carry and rotate the hub on the automobile axle to provide accurate guidance parts, both axial load and radial load, this kind of bearing is an important part of the automobile load and rotation. Hub bearing is one of the key parts of the automobile, its main role is to carry weight and provide accurate guidance for the rotation of the hub, which requires it to bear not only axial load but also radial load.

A wheel hub assembly (WHA), also referred to as hub assembly，wheel hub unit,wheel hub bearing, is an automotive part used in most cars, passenger vehicles, and light and heavy trucks. The main function of the hub bearing is to bear weight and provide precise guidance for the rotation of the hub. It bears both axial load and radial load, and is a very important component. Especially for the wheel hub bearings of trucks, due to the greater load it bears, the bearing capacity and precision of the wheel hub bearings are even more important.   

Universal joint is commonly used in shafts that transmit rotary motion. It consists of a pair of hinges located close together, oriented at 90° to each other, connected by a cross shaft.

The design concept and manufacturing technology of automobile hub bearing unit are successfully applied to the field of heavy truck bearing. The conventional two sets of single-row tapered bearing series are designed as an integrated bearing unit. The compact structure design of the product not only has the weight advantage of the bearing weight, but also helps the lightweight design of related parts; The product has an independent lubrication system; The bearing and wheel hub assembly into one, easy to run, assembly and disassembly; The product has the advantages of light weight, low friction, energy saving and consumption reduction.