The bearing fault is expensive!

The bearing fault is expensive! 2019 - 05 - 28 SKF hybrid ceramic bearing is bearing steel ring and silicon nitride ( Si3N3) Made of a combination of rolling body. This kind of bearing in addition to have good electrical insulating properties, and can run at higher speeds, in most applications, the working life is longer than the traditional bearing steel bearing. Hybrid ceramic bearing hybrid ceramic bearing to further improve the electrical insulation properties, especially for the high frequency inverter applications. SKF hybrid ceramic bearing has the following good properties, make its can be in the ultra-high speed precision equipment and frequency conversion motor's favor. Low insulation performance. The conductive silicon nitride by rolling element bearing protection does not have a current, so as to prolong the service life of bearing, because the destructive bearing current will soon be shorten its service life. Low density is low. Bearing grade silicon nitride than the density of the same size of the roller bearing steel rolling body low 60%, this means that the light weight, small inertia, superior performance, rapid start-up speed is higher. Low friction coefficient is low. Silicon nitride rolling body density low, coupled with the low friction coefficient, can greatly reduce the bearing temperature in running at a high speed. Low temperature operation can prolong the service life of bearing and lubricant. Low hardness and elastic modulus is high. Silicon nitride high hardness roller can improve the abrasion resistance, stiffness of bearing in the pollution of the environment and service life. Steel rolling body excessive rolling solid pollutants, due to plastic deformation, will be in the race and rolling elements have bump is formed on the edge of the indentation. Due to continuous excessive rolling roller convex edge, high local stress will lead to spalling, causing premature failure of the bearing. However, hybrid ceramic bearing on excessive damaged areas of the different rolling. Because of the silicon nitride high hardness, scrolling experience is creasing the convex edge smooth, until the raceway restore smooth, it will reduce the chance of local stress and spalling, significantly extend the service life of bearing. Low resistance to pseudo brinell indentation. When the bearing is in a stationary state, due to the vibration, is the risk of pseudo brinell creasing. Pseudo brinell indentation is produced on the rolling path mark, eventually lead to premature bearing failure. Ceramic roller to replace steel rolling body, pseudo brinell indentation will be significantly reduced. Low silicon nitride and the adhesion between the steel surface wear risk reduction. Even in the case of insufficient lubrication conditions, silicon nitride and the adhesion between the steel surface wear risk is low. This makes the hybrid ceramic bearing in high speed and high acceleration applications or the lack of dynamic pressure oil film applications running time will be longer. The low thermal expansion coefficient is low. The thermal expansion coefficient of silicon nitride rolling body is lower than the same size of the bearing steel roller. This means that within the bearing on temperature gradient less sensitive, can be more precise control of pre-load and clearance. Low grease long service life. Hybrid ceramic bearing friction heat produced less than all of the same size steel bearing, especially under the condition of the high speed running. Lower bearing operating temperature supplement to extend the service life of bearing and lubrication time interval has the beneficial effects. According to the applications and operating conditions, the service life of the grease can extend at least twice. SKF hybrid ceramic bearing so many excellent performance is very worthy of promotion of use, the only drawback is a bit expensive! So hybrid ceramic bearing only on high speed precision equipment, high voltage variable frequency motor and generator equipment use. Is the bearing cannot solve the elsewhere in the world, are borne by the hybrid ceramic bearing,. （ The above content for hk bearing network technical engineers to write, please leave a message if you have any questions. ） Hk united bearing focus bearing industry informationization service nearly 20 years, with many excellent bearing enterprise grows together, also witnessed China's bearing production technology from low to high development process. We will adhere to continue, the steadfast work, don't, don't give up, for the benign development of Chinese bearing industry do render some. Hk united bearing network bearing engineers, 2018. 11. 28