What is the role of rear axle bearings.
The role of the rear axle bearing is to carry the load. If the front axle is not a drive axle, the rear axle is a drive axle. At this time, it not only plays the role of bearings, but also plays the role of drive, deceleration and differential.
The role of automobile bearings is:
1, is to keep the vehicle steering when the shock absorber can rotate with the wheel, so that it can maintain the flexibility of steering.
2. The outer ring of the automobile bearing is a rubber product, which can maintain the soft connection between the body and the shock absorber and reduce the vibration when the road is uneven.
3, in the process of driving, the unequal reasons of the road surface make the pressure bearing often crack and damage, so that the front will make a "clang" sound when driving on the bumpy road, and seriously make the wheel positioning misalignment.
Bearing maintenance precautions
1, the hub bearing preload should be too tight within the specified range of preload, bearing running clearance is too small, will cause bearing ablation, affect the bearing life; When the bearing is too loose, the bearing will slide between the shaft or hub, which will cause the wheel to swing and drive unstable, and may also cause the wheel to be thrown out in serious cases.
2, grease needs to be properly maintained only in the hub bearing to apply the right amount of grease to meet the needs, full hub lubrication, excess grease will not participate in the bearing lubrication process, but will lead to poor heat dissipation, may appear vehicle fire or brake failure phenomenon; When the grease is too small, the friction between the bearing and the hub will increase, resulting in bearing damage and shortening the service life of the bearing.
What symptom does the rear wheel bearing break
1, driving abnormal sound
Abnormal driving noise is the main symptom of rear wheel bearing damage. When there is a problem with the rear wheel bearing, the vehicle will make a "buzzing" noise during the driving process. This abnormal noise is caused by the increased clearance caused by the bearing damage, and then the noise generated. This abnormal sound not only affects the driving experience, but also may be a precursor to damage to other parts of the vehicle. Therefore, once this abnormal sound is found, it is recommended that the owner go to the 4S shop in time for inspection and replacement to ensure driving safety. Rear wheel bearing abnormal noise may be caused by a variety of reasons, These include too little oil separation in the bearing, insufficient lubrication of the bearing groove and the steel ball, too tight separation of the bearing inner ring resulting in contact friction with the clutch diaphragm spring, insufficient assembly height of the separation bearing or the sinking of the bearing inner ring after long-term work, the clutch diaphragm spring is not separated on the same plane resulting in the bearing being intermittently separated from the finger when rotating, and the diaphragm spring is elastic after a long period of work Drop, etc. In order to ensure the normal operation of the rear wheel bearing, it is recommended to check the oil separation of the bearing regularly to ensure adequate lubrication; Check whether the bearing inner ring separation is too tight to avoid friction with the diaphragm spring; Pay attention to the assembly height of the separation bearing to avoid abnormal noise caused by contact with the diaphragm spring; Finally, check the elasticity of the clutch diaphragm spring to avoid abnormal sound after a long time of work.
In addition, the rear wheel abnormal sound may also be caused by other factors, such as bolt loosening, pump and caliper failure, brake pad wear, suspension bushing aging, hub bearing wear, shock absorber top rubber aging, foreign body attachment, abnormal tire pressure, lack of lubricating oil, dynamic balance failure. Therefore, when the rear wheel of the vehicle has an abnormal sound, a comprehensive inspection should be carried out to determine the specific cause and carry out the corresponding maintenance or replacement.
2. Body shake
Body shake is an obvious symptom of rear wheel bearing damage. When the bearing is damaged to a certain extent, its clearance will increase. This increased clearance will cause the body to shake when the vehicle is traveling at high speeds. This jitter is due to the bearing damage, the bearing and rotation guidance of the tire become inaccurate, which affects the stability and handling of the vehicle. Therefore, once the body is found to shake at high speed, it should immediately go to the 4S shop for inspection and replacement of bearings.
3. Unstable driving
Driving instability is an obvious symptom of rear wheel bearing damage. When the rear wheel bearing is damaged, its clearance will increase, resulting in instability and power instability when the vehicle is driving at high speed. This is because the bearing, as the core of the body mass, provides rotation capacity for the tire, and its working environment is extremely harsh, not only to face the pressure and vibration during the vehicle driving, but also to withstand the invasion of rain and sand.
4. Poor rolling
When the rear wheel bearing is damaged, an obvious symptom is poor rolling. This is mainly because bearing damage can lead to increased friction, which in turn affects the normal rotation of the wheel. Specifically, damaged bearings may cause the wheel to make abnormal noises during driving, or cause the wheel to turn slower. This will not only affect the comfort of driving, but may also increase tire wear and may even cause other safety issues. Therefore, once it is found that the rear wheel is not rolling smoothly, the bearing should be checked and replaced in time.
Please call us if you need such products.
Zhuo Meng Shanghai Auto Co., Ltd. is committed to selling MG&MAUXS auto parts welcome to buy.
