In the past, the hub bearings of cars used to be paired with single row tapered roller or ball bearings. With the development of technology, car hub unit has been widely used. Hub bearing unit has been used more and more widely, and now it has developed to 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 fixing the bearing, which can simply fix the bearing sleeve to the axle with a nut. Make car maintenance easier. The third generation hub bearing unit adopts the combination of bearing unit and ABS of anti-lock braking system. The hub unit is designed with inner flange and outer flange. The inner flange is fixed on the drive shaft with bolts, and the outer flange installs the whole bearing together. Weared or damaged hub bearings or hub units can cause inappropriate and costly failure of your vehicle on the road, and even harm your safety. In the use and installation of hub bearings, you should pay attention to the following matters:

1. In order to ensure safety and reliability to the greatest extent, it is recommended that you check the hub bearings regularly regardless of the age of the vehicle. Attention should be paid to the early warning signals of bearing wear, including friction noise during any rotation or abnormal deceleration of suspension combined wheels during turning. For rear-wheel-driven vehicles, it is recommended that the front hub bearings should be lubricated when the vehicle runs to 38,000 kilometers. When replacing the brake system, check the bearing and replace the oil seal.

2. If you hear the noise from the hub bearing, 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 come into contact with non-rotating parts. If the noise in the bearing is confirmed, the bearing may be damaged and need to be replaced.

3. Because of the front hub