How truck hub bearings work

Wheel bearings are an important part of the vehicle. Its main function is to support the wheels, reduce the friction resistance between the wheels and the ground, and help the vehicle drive more smoothly. The working principle of wheel hub bearings involves some basic concepts of mechanics, including rolling friction, sliding friction, torque transmission, etc.

Hub bearings include inner rings, outer rings, rolling elements and cages. The rolling elements generally use steel balls or rollers, and ball hub bearings are widely used in vehicles. Ball hub bearings reduce friction through rolling friction. When the wheel rotates, the inner ring, outer ring and rolling elements of the hub bearing rotate together. The rolling elements use their own rounded surfaces to reduce friction, allowing the wheel to spin more freely.

In addition to rolling friction, wheel bearings also involve sliding friction. Sliding friction mainly occurs in sliding bearings, while hub bearings generally do not use sliding friction. Under abnormal circumstances, such as insufficient lubrication or failure, sliding friction will occur, which will have a great impact on the life of the wheel hub bearing.

Finally, torque transmission is also an important working principle of wheel hub bearings. When the vehicle is running, the wheels are connected to the axles through hub bearings. Since the wheels bear large loads, the hub bearings must be able to withstand large moments. The wheel hub bearing shares the load through the inner ring, outer ring and cage, keeping the wheel stable and not easily damaged.

The hub's job is to connect the brake disc to the wheel and allow it to rotate.

The hub holds 4 to 5 bolts. These are called "hub bolts" because they are used in the wheel hub and install the brake rotor, wheel and spacer for custom users.

When the hub rotates, the hub bearing is installed on the outside of the rotating shaft.

Avoid wheel bearing problems with regular maintenance. Whether the wheel hub bearing plays its due role plays an important role in safe car life.

If a wheel breaks while driving, surrounding drivers and pedestrians are likely to be involved in an accident. Check its condition with regular maintenance and replace it as soon as possible if you notice performance degradation.