+86 379 64116028 strong.zeng@bearingly.com

How to distinguish good NSK bearing quality

1. Feel the quality of NSK bearings through the surface

In the process of NSK bearings, many customers said that as long as the bearing surface is bright, it is of good quality. This is wrong. The brightness of the imported bearing surface should be a black color. The reason for this black color is whether the steel used in the bearing meets the standard, its grinding process and the cutting fluid used, among which the first two are the main ones.


2. Whether the chamfer is bright

The chamfer of NSK bearing does not determine the quality of the bearing, but it reflects the processing method of NSK bearing. The chamfer is black, which means that the hardness of the bearing is increased after quenching and other heat treatment. Some people think that the black chamfer is not good-looking because it has not been processed completely. This is a misunderstanding.


3. One-body cage is better than two-body

Although the new technology uses one-piece cage, it only saves materials, and its performance against rotation is worse than the two-body cage.

In general, the service life of NSK imported bearings is related to three factors:
One is the quality of the bearing itself. The second is the use environment. The third is the installation method.
The characteristic of lacquer rust is that it mostly occurs in sealed motors. The sound of the motor is very good during assembly, but after some time in the warehouse, the abnormal noise of the motor becomes very large, and the NSK bearing is severely rusted when it is removed. In the past, many manufacturers would think it was a bearing problem. After our continuous publicity, now the motor factory has realized that the main problem is the insulating paint. This problem is mainly because the acidic substance volatilized from the insulating paint forms corrosive substances under a certain temperature and humidity, which causes the NSK bearing to be damaged after corroding the bearing groove. At present, the problem can only be to choose a good insulating paint and ventilate for a period of time after drying and assembly.

Online Service