With the development of modern equipment, customers hav […]
With the development of modern equipment, customers have relatively high requirements for bearings. Ceramic bearings can meet the requirements of various harsh conditions, and their characteristics are described below:
1.High carrying capacity
The material hardness of ceramic bearings can reach 2 times that of bearing steel, and the elastic modulus is 1.5 times that of bearing steel. Therefore, the bearing capacity of ceramic bearings is much higher than bearings made of bearing steel.
2.Good heat resistance
The strength of ceramic materials used in ceramic bearings will not change much at high temperatures. Even at work, I can reach 800oC and still maintain high strength and performance. At the same time, the thermal expansion rate of ceramic materials is only 22% of bearing steel. Therefore, the working dimensional stability will be good under high temperature environment.
3.High limit speed
The normal working speed of ceramic bearings can reach more than 1.3 times of the steel bearing of the same type, and it will not deform and change its structure due to high temperature caused by high speed.
4. Low friction heating during operation
The temperature rise of ceramic bearings when operating at a speed of 18000r / min is 60% of the temperature rise of ordinary bearings of the same model.
5, small friction loss
For ordinary bearings of the same model, the material quality of ceramic bearings is relatively small (approximately 40% of bearing steel), the centrifugal force and gyro torque received during operation are small, and the spin slip is small, so the friction loss is significantly smaller than the bearing steel bearings.
Ceramic bearing materials have high hardness and excellent wear resistance. The working life of ceramic bearings is generally more than twice that of ordinary bearing steel bearings.
7, Good rot resistance
The material used for ceramic bearings can resist the corrosion of various organic and inorganic acids such as hydrochloric acid, sulfuric acid, nitric acid, and caustic soda, as well as the molten metal. However, in hydrogen oxide and molten iron, its corrosion performance is poor, so you must pay attention to it during use.