In the past, single row tapered roller or ball bearings were most commonly used in pairs for wheel hub bearings in automobiles. With the development of technology, sedan wheel hub units have been widely used in cars. The scope and usage of hub bearing units are increasing day by day, and they have now developed to the third generation: the first generation consists of double row angular contact bearings. The second generation has a flange on the outer raceway for fixing the bearing, which can be easily fitted onto the axle and secured with a nut. Make car maintenance easier. The third generation wheel hub bearing unit adopts a combination of bearing units and anti lock brake system ABS..

Please note the following when using and installing hub bearings:

1. To ensure maximum safety and reliability, it is recommended that you regularly check the wheel hub bearings regardless of the age of the vehicle - pay attention to early warning signals for bearing wear, including any frictional noise during rotation or abnormal deceleration of the suspension combination wheel during turns.

2. If you hear any noise coming from the hub bearing area, it is important to first locate 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 it is confirmed that there is noise in the bearing, the bearing may be damaged and needs to be replaced.

3. Due to the similar working conditions of the front wheel hub causing bearing failure on both sides, even if only one bearing is damaged, it is recommended to replace it in pairs.

4. Hub bearings are sensitive and require the correct method and appropriate tools in any situation. During storage, transportation, and installation, the components of the bearings must not be damaged.

5. When installing bearings, they should be in a clean and tidy environment. Small particles entering the bearings can also shorten their service life. It is very important to maintain a clean environment when replacing bearings.

6. Do not attempt to disassemble the hub bearing unit or adjust the sealing ring of the hub unit, otherwise it may damage the sealing ring and cause water or dust to enter. Even the sealing ring and inner race raceway are damaged, causing permanent failure of the bearing.

7. The sealing ring equipped with ABS device bearings has a magnetic thrust ring inside, which cannot be subjected to collision, impact, or collision with other magnetic fields.

8. To determine which side the thrust ring is installed on, a light object can be used on the edge of the hub bearing equipped with ABS magnetic thrust rings. The magnetic force generated by the bearing will attract it.

9. Many bearings are sealed and do not require lubricating grease throughout their entire lifespan.

10. When installing the locking nut, the torque varies greatly due to the different types of bearings and bearing seats.