Application of China Ceramic Ball Bearings and Analysis of China Ceramic Ball Bearing Market

 

China Ceramic Ball Bearing Market

The bearing application environment is changeable, ceramic bearing performance is better

China good quality ceramic bearing suppliers-TFL Bearing

In recent years, with the rapid development of machinery and equipment, the environment in which the bearings are used has become more changeable, and the requirements for the performance and the structure of the bearings has become higher and higher. In this context, ceramic ball bearings came into being. Ceramic materials have excellent properties such as high-temperature resistance, long life, low heat generation, low thermal expansion, high rigidity, non-magnetic, good insulation, etc., can withstand the harsh working environment that metal materials and polymer materials are difficult to handle, and meet the work of bearing materials The basic requirements of the time.

China ceramic bearing manufacturer-TFL

Bearings have a wide range of applications, such as automobile transmissions, general motors, internal combustion engines, high-speed motors, machine tool spindles, aircraft jet engines, medium and large motors, and so on. When the bearing is working, it may be subjected to extreme environments such as high temperature, high speed, deep cold, flammability, explosiveness, strong corrosion, etc. Therefore, several requirements are put forward for the manufacturing materials of the bearing: 1. Heat resistance, bearing steel is not suitable for Working in a high-temperature environment, when the use temperature exceeds 120 ℃, the hardness of the bearing steel will decrease, and the service life will also decrease. However, the strength and hardness of silicon nitride ceramics will not change in a high-temperature environment; 2. Low density, The density of bearing steel is more than twice that of silicon nitride ceramics. Therefore, the rolling element load caused by centrifugal force in high-speed rotation of silicon nitride ceramics is small; 3. The linear expansion coefficient is low, and the linear expansion coefficient of bearing steel is nitrided. Four times that of silicon ceramics, this performance makes silicon nitride ceramics have small dimensional changes in environments with large temperature differences, and is more suitable for environments with large temperature changes than bearing steel; 4. The elastic coefficient is high, and the elastic coefficient of silicon nitride is the same as that of bearing steel. 1.5 times, so the elastic deformation of the relative load is small, and the rigidity of the relative load is high; 5. Corrosion resistance, the bearing is often corrosive when used in the marine environment, and the service life of the bearing is shortened. Both strong acid and strong alkali have high chemical stability; 6. Non-magnetic and good insulation. Bearings often produce electric corrosion when they are used in traction motors of railway vehicles. This becomes the cause of premature flaking and damage of bearings. Silicon nitride The ceramic resistivity is extremely high and the insulation performance is good. It can be seen from Table 1 that the silicon nitride bearing meets the basic requirements of the manufacturing material of the bearing, and some of its performance is better than that of the bearing steel.

China bearing market, bearing huge Chinese ceramics market demand

The first set of ceramic bearings was produced by NASA in the United States. After the first set of ceramic bearings was successfully applied, countries began to compete for research and development. After decades of development, so far, more mature countries in the production of ceramic bearings include the United States, Japan, Germany, Sweden and more than a dozen countries. The leading international manufacturers are Norton in the United States, china ceramic bearing manufacturer TFL, SKF in Sweden, FAG in Germany, and Koyo in Japan.

Among ceramic bearings, the highest precision is G3 grade, and the second-highest grade is G5. China is currently able to produce G5 ceramic bearings.

Compared with bearing steel, ceramic bearings have more outstanding performance and a wider range of applications. The Chinese bearing market is huge and is growing. Welcome customers all over the world to consult us for purchasing from china ceramic bearing factory.