In the past, many wheel bearings of cars were paired with single row tapered roller or ball bearings. With the development of technology, cars have widely used car hub units. The range and use of wheel bearing units is growing and has now developed into the third generation: the first generation is composed of double row angular contact bearings. The second generation has a flange on the outer raceway for securing the bearing, which can be simply bushed onto the axle and secured with a nut. It makes car maintenance easy. The third generation hub bearing unit is a combination of the bearing unit and anti-lock brake system ABS. The hub unit is designed with an inner flange and an outer flange, the inner flange is bolted to the drive shaft, and the outer flange installs the entire bearing together. Worn or damaged hub bearings or hub units can cause inappropriate and costly failures of your vehicle on the road, or even harm your safety.

In the use and installation of hub bearings, please pay attention to the following matters:

In order to ensure maximum safety and reliability, it is recommended that you always check the hub bearings regardless of the age of the vehicle - pay attention to the early warning signs of bearing wear: including any friction noise during rotation or abnormal deceleration of the suspension wheel during turns. For rear-wheel drive vehicles, it is recommended that the front hub bearings should be lubricated when the vehicle is traveling to 38,000 km. When replacing the brake system, check the bearing and replace the oil seal.

If you hear a noise from the hub bearing part, first of all, it is important to find the location where the noise occurs. There are many moving parts that may produce noise, or some rotating parts may be in contact with non-rotating parts. If it is confirmed that it is noise in the bearing, the bearing may be damaged and needs to be replaced.

Because the working conditions leading to the failure of bearings on both sides of the front hub are similar, even if only one bearing is broken, it is recommended to replace it in pairs.

Hub bearings are more sensitive, in any case need to use the right method and the right tools. In the process of storage and installation, bearing components can not be damaged. Some bearings require greater pressure to be pressed into, so special tools are required. Always refer to the car's manufacturing instructions.