Maintenance and replacement tips for electric vehicle bearings

Bearings are equivalent to bones and joints for electric vehicles. In the driving process of electric vehicles, the safety of bearings is greatly related to the safety factor when we ride. For electric vehicles, the greater the power, the higher the safety requirements of the bearings. If accidental damage to the bearings or irregular use occurs during driving, it must be repaired in time, because this is related to our later riding. Life safety.

Electric vehicle bearings are an important part of electric vehicles. Its main function is to support the mechanical rotating body, reduce the friction coefficient during its movement, and ensure its rotation accuracy.

According to the friction properties of moving components, bearings can be divided into rolling bearings and sliding bearings. Among them, the rolling bearing has been standardized and serialized, but its radial size, vibration and noise are larger than the sliding bearing, and the price is also high.

Bearing damage:
1, the quality of the bearing itself, the steel is not up to standard, the material is used poorly!
2, the bearing is bare in the outer seal is not easy to enter the water, such as the front wheel right bearing; the motor does not have the brake end cover inner bearing) and the oil seal is damaged, the water will wash the bearing butter, resulting in poor lubrication and rust, Increasing the friction causes the bearing to wear out the "scattering".
3. If the wheel impact is heavy or the shaft hardness is not enough, the bending deformation will cause the bearing to be biased during the operation. It will grind the “inner circle” and the grinding “outer circle”, so that the bearing will be unevenly damaged and damaged!
4, bearing hole machining accuracy is not accurate, the bearing is slightly deformed, the bearing friction is increased, and the running friction is increased, leading to premature bearing wear and tear.

In the case of excessive damage of the bearing, the wheel will tilt, which in turn will cause the vehicle to deviate during driving. This is because the bearing has a bearing capacity in a certain direction, which makes it difficult to control the direction of the electric vehicle during driving. . If it is serious, the wheel may fall off. If the vehicle is at a high speed, the consequences will be unimaginable, so it is necessary to replace the damaged bearing in time.

Replacement notes:

1. Check the end cap oil seal when changing the bearing. If the oil seal is not closed, please replace it!
2. There is little or no oil in the factory bearings. Please add the lubricating oil to the bearing oil seal!
3. If there is such a problem that the bearing hole is loose, for the safety considerations, the rim or motor end cover should be replaced!
4. After the bearing is installed, please float the wheel to check whether the wheel is running smoothly and smoothly. If there is any difficulty or stuck, if there is any possibility, the bearing may not be in place, please re-install! Otherwise, it will sweep the church, the operation is not flexible, and it will soon be "squeaky" when it is forced to ride the bearing!
5, tell the customer to try not to ride to the water, so as not to rust the water.

After the electric vehicle bearing is ground for a long time, it is easy to be damaged, the turning is not smooth, the turning is abnormal, and most of the pressure bearing is