Ceramic Bearings Ceramic Bearings made of ceramic materials commonly used silicon nitride (Si3N4), silicon carbide (SiC), alumina (Al2O3) and zirconia (ZrO2). In the four silicon carbide ceramic materials:

(1). The use of maximum temperature is high, the high temperature strength of silicon carbide, when the temperature is above 1200 Degrees Celsius, SiC begins to exceed the strength of the strength of Si3O4;
(2). The highest thermal conductivity, about 150W / m. K, in the bearing during operation, the heat can be dissipated quickly;
(3). Better thermal shock resistance, consider using the occasion dramatic changes in temperature;
(4). Low coefficient of thermal expansion (only greater than silicon nitride) can be better in the high-temperature environment to maintain the dimensional accuracy;
(5). The highest modulus of elasticity, the dynamic stiffness of the bearings increase the stiffness can be used in demanding situations;
(6). The lowest density, can reduce the centrifugal loads, reduce friction, used in high-speed environment;
(7). Corrosion resistance, can be used in petroleum Oil, Chemical Chemical, Mechanical machinery and other fields.