1, high-speed
The weight of the ceramic material is only 40% of the equivalent weight of steel, the density is small this feature, light weight and high-speed bearings, ceramic bearings in high-speed rotation can inhibit the increase of the load due to the centrifugal force caused by the rolling and slipping ceramic bearings speed steel bearing 1.3 to 1.5 times its DN value of up to 3 million, such as angular contact ball bearing rotary sliding, the contact angle between the rolling element and raceway. When the density of the ceramic rolling element, not only the rotational slide, and play a useful role in bearing heating and surface damage is also very useful for aerospace vehicles.

2, high rigidity
Much higher elastic modulus ratio of the silicon nitride ceramic metal, which is 1.5 times that of the metal, and thus force after elastic deformation, the relatively high rigidity of the load about can increase the stiffness of 15% to 20%, thus reducing machine vibration. Obtain a good value in high-precision systems, such as ultra-precision machine tool spindles, high-precision aerospace bearings.

3, long-life
Ceramic materials dislocation less, the migration rate is low, and has high hardness, generally higher than the hardness of the metal by more than 100 high, to reduce wear and tear, making ceramic bearings with a good wear resistance. In addition, the mechanical strength of silicon nitride ceramics, its tensile strength and bending strength and metal; and high compressive strength, which is about 5-7 times of metal materials, especially in high temperature conditions, is still able to maintain high strength and hardness, even at 1200 ° C strength remained unchanged, in the case of foreign matter mixed with the ceramic ball rarely produce spalling failure, therefore, pressure marks and good ceramic bearings usually have a longer life, usually bearing 3 to 5 times higher than steel.

4, low fever
The smaller the friction coefficient of silicon nitride ceramics is about 30% of the standard bearing steel, compared with metallic materials, less the thermal conductivity of silicon nitride ceramics, so the less heat generated in the ceramic bearings work can be extend the life of the grease.

5, low thermal expansion
Thermal expansion coefficient of silicon nitride ceramics is about 20% of the steel bearing, ceramic bearing with the size variation of the temperature change is small, and the heat generated by pre-loaded low, thus avoiding excessive heat buildup fatigue spalling failure, useful temperature environment.

6, the corrosion resistance
Inactive chemical properties of ceramic materials, ceramic bearing has a certain degree of corrosion resistance, ceramic bearings can be used for early failure of steel bearings due to the lack of chemical resistance applications, such as chemical machinery and equipment, food, marine in the departments of mechanical and atomic energy equipment.

7, non-magnetic
Magnetic environment, the use of steel bearings, wear down the powder from the bearing itself is adsorbed between the rolling element and raceway become bearing spalling damage in advance, the main reason for the noise increases, due to the ceramic bearing is completely non- magnetic, and has a normal carrying capacity, and so can be used for the need to completely non-magnetic bearing of the occasion.

8, the insulation
Ceramic materials often retreat resistively is relatively high, as a good insulating material, the bearing from arc damage.