The cause of abnormal damage to the hub bearing

During the maintenance process, it is often found that some vehicles have large running noise, and the tires are checked for no abnormal wear, and there is no abnormal noise in turning the wheels on the lift. This phenomenon is often caused by abnormal damage of the hub bearing. The so-called abnormality refers to the bearing damage caused by the installation. The front wheel bearing of a car is generally a double row ball bearing. If the hammer is used for installation when the bearing is installed, or when the bearing is installed into the bearing housing by the inner ring of the pressure bearing, the bearing race of one side will be caused. damage. Noise is generated when the vehicle is running, and no significant noise is heard when the wheel is off the ground due to the better side of the raceway. Proper installation is the key to long bearing life.

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Analysis of the causes of HRB bearing damage

In the course of use, due to its own quality and external conditions, its bearing capacity, rotation accuracy and anti-friction performance will change. When the bearing performance index is lower than the use requirements and cannot work normally, it is called bearing damage or In the event of failure, if the bearing is damaged or the like, there will be various abnormal phenomena such as the machine, the equipment being stopped, and the function being damaged.
    Therefore, it is necessary to investigate the cause of the occurrence in a short period of time and take corresponding measures. Of course, the damage of the rolling bearing is much more complicated than the damage of the general mechanical parts. The damage of the rolling bearing is characterized by many manifestations, complicated reasons, and the bearing damage is in addition to the bearing design. In addition to the internal factors of manufacturing, most of them are caused by improper use, such as: selection of cloth suitable (see customer instructions), unreasonable support design, improper installation, poor lubrication, poor sealing and other external factors.
    It is of great significance to study the formation and causes of rolling bearing damage. On the one hand, it can improve the use method, use the bearing correctly, give full play to the performance of the bearing, and on the other hand help to develop new products with better performance. In addition to the precautions, installation methods, operation monitoring, etc. in the use of rolling bearings, this paper also focuses on the form and causes of bearing damage and the countermeasures to be taken.

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