Car hub bearings used to be a lot of pairs of single-row tapered roller or ball bearings. With the development of technology, car wheel hub unit has been widely used. 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 for fixing the bearing on the outer raceway, which can be simply inserted onto the axle and fixed with a nut. It makes car maintenance easier. The third generation of wheel hub bearing unit is a combination of 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.

Please pay attention to the following matters in the use and installation of wheel bearings:

1, in order to ensure maximum safety and reliability, it is recommended that you often check the hub bearing no matter how old the car is. — Pay attention to early warning signs of bearing wear: including any friction noise during rotation or abnormal deceleration of the suspension combination wheel during a turn. For rear-wheel drive vehicles, it is recommended to lubricate the front hub bearings before the vehicle reaches 38,000 km. When replacing the brake system, check the bearing and replace the oil seal.

2, if you hear the noise of the bearing part of the wheel, first of all, it is important to find the location of the noise. 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.

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

4, wheel 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.