Bearing role

Investigate its role should be supported, that literal interpretation is used to bearing axis, but this is only part of its thrust roller bearing role in supporting its essence is to be able to bear the radial load. It can also be understood as it is used to a fixed axis. Bearing selection quick and easy optimization automation have included. It is fixed to the shaft so that it can only achieve rotation, and control the movement of its axial and radial. Motor without bearing the words simply do not work. Because the axis movement in any direction possible, and the motor work requirements shaft can only be rotated. In theory, the role of transmission can not be achieved, not only that, bearing also affect the transmission, in order to reduce the impact on the high speed shaft bearings must achieve good lubrication, bearings themselves have some lubrication, called pre-lubricated bearings, and Most of the bearings must have oil, responsible for high-speed operation, due to the friction will not only increase energy consumption, even worse, is very easy to damage the bearings. The sliding friction into rolling friction is one-sided argument, because what kind called plain bearings.

Bearing steel features

First, the contact fatigue strength
Load bearing under the influence of the cycle, the contact fatigue damage looks very easy to attack, namely the emergence of crack spalling, it is important to undermine the situation bearing. Thus, in order to improve the service life of bearings, bearing steel must have a high contact fatigue strength.
Second, wear resistance
Bearing task, crossed tapered bearings rings, not only between the onset of rolling friction rolling elements and maintain aircraft, but also the onset of sliding friction, so that the bearing parts have been worn. In order to increase the wear bearing parts, precision bearings maintain stability, extended service life, bearing steel should have good wear resistance.
Third, hardness
Hardness is an important quality of the bearing quality of the contact fatigue strength, wear resistance, the elastic limit has indirectly. Bearing steel hardness at the operative situation of the individual to reach HRC61 ~ 65, the ability to achieve a higher bearing contact fatigue strength and wear resistance.
Fourth, anti-rust properties
In order to avoid bearing parts and finished eroded rust processing, deposit and application process, request bearing steel should have good anti-corrosion properties.
Fifth, the processing performance
Bearing parts in the consumption process, to go through a lot of road cold, thermal processing step, a small amount to the amount of satisfaction, high efficiency, high quality requests, bearing steel should have good processing properties. For example, cold and hot formability, machinability, hardenability and so on.
Bearing steel In addition to these basic requirements, it should reach the appropriate chemical composition, average external organizations, non-metal dopant less fit specifications and external appearance of the shortcomings do not go beyond the rules of the outer carbon layer concentration request.