Bearing is an important component in contemporary machinery and equipment. Its main function is to support the mechanical rotating body, reduce the friction coefficient during its movement, and ensure its rotation accuracy.

Bearing function:

In terms of its function, it should be a support, that is, it is used to bear the bearing in a literal interpretation, but this is only a part of its function. The essence of support is to be able to bear radial loads. It can also be understood that it is used to fix the shaft. Bearing quick and easy automatic selection is included. It is to fix the shaft so that it can only rotate, and control its axial and radial movement. A motor would not work at all without bearings. Because the shaft may move in any direction, and the motor requires that the shaft can only rotate. In theory, it is impossible to achieve the function of transmission. Not only that, the bearing will also affect the transmission. In order to reduce this effect, good lubrication must be achieved on the bearings of the high-speed shaft. Some bearings have already been lubricated themselves, which are called pre-lubricated bearings. Most bearings must have lubricating oil, which is responsible for not only increasing energy consumption due to friction during high-speed operation, but also terrifyingly easily damaging the bearings. The argument to convert sliding friction into rolling friction is one-sided, because there is something called a sliding bearing.

How is bearing availability judged?

The judgment of whether the bearing is available is mainly determined by considering the degree of bearing damage, mechanical performance, importance, operating conditions, and the period until the next maintenance. If it has the following defects, it can no longer be used and must be replaced with a new bearing. There are cracks or nicks on any of the inner ring, outer ring, rolling elements, and cage.

1. Any one of the rings and rolling elements is broken. 2. There are obvious scratches on the rolling surface, ribs and rolling elements. 3. The cage is significantly worn or the rivets are significantly loosened. 4. There is rust and damage on the raceway surface and rolling element. 5. There are serious indentations and scratches on the raceway surface and rolling elements. 6. There is obvious creep on the inner diameter surface of the inner ring or the outer diameter surface of the outer ring. 7. The discoloration caused by heat is obvious.

8. For the bearing sealed with grease, the seal ring or dust cover is obviously damaged.