Wheel hub bearings are an important component of the automotive chassis, typically located beneath the brake discs. They support the wheel hub, allowing the brake disc and wheels to rotate smoothly. What is the main function of wheel hub bearings?
The main function of wheel hub bearings is to connect the brake disc and wheel, and enable them to rotate smoothly. The hub is usually equipped with 4 to 5 bolts, which are called "hub bolts" and used to install brake discs, wheels, and washers. When the hub rotates, the hub bearing is responsible for supporting the outside of the rotating shaft. For example, the third-generation wheel hub has a groove "spline" for installing the drive shaft, and the drive shaft side also has corresponding splines. Through these spline combinations, the power transmission system of the driving force is transmitted to the wheel hub. Finally, the drive shaft is fixed to the wheel hub with a large nut called the "wheel hub nut", and the tightening torque for small cars is about 240 N · m.
Types of wheel hub bearings
Although different manufacturers have different names, the wheel hub bearings used in cars can be roughly divided into three types. At present, the wheel hub bearing structure used in automobiles is that the wheel hub axle is mounted on the wheel hub bearing. This structure is easy to understand in cars, so if you plan to perform car repairs in the near future, it is best to request an inspection.
When should the wheel hub bearings be replaced?
There is no fixed mileage and age standard for the replacement of wheel hub bearings, as it depends on the specific vehicle model. It is best to replace the wheel hub bearings before they wear out, or replace them promptly when you feel the wear on the wheel hub bearings.
How to identify wheel hub bearing wear?
There are two main methods to determine whether the wheel hub bearings are worn:
Rotating wheel method: Lift and rotate the wheel, check the resistance and abnormal noise of the wheel hub bearing. When the resistance decreases or abnormal noise occurs, it indicates that the wheel hub bearings may have worn out.
Left and right wheel movement method: While lifting, move the wheels left and right. If the wheel hub bearings are loose, the wheels will move back and forth when shaking. This situation indicates that it is time to replace the wheel hub bearings, otherwise the suspension may come off and the wheels may come off.
Abnormal noise while driving
If the wheel hub bearings age to a certain extent, you will hear strange noises while driving, especially when turning the steering wheel. This strange noise sounds like a creaking sound. If you hear this sound, it may be due to the aging of the transmission shaft (i.e. tremolo), so it is best to check it using the above method.
Can I replace the wheel hub bearings myself?
Although it is possible to replace the wheel hub bearings by oneself, it is recommended that Hengding wheel hub bearings be operated by professionals to ensure safety and correctness. Each car owner may have their own replacement standards, and if the daily mileage is long, the wheel hub bearings can be replaced during each vehicle inspection.
By understanding this information, you can better maintain your car and ensure safe driving.
