Ceramic bearings have the characteristics of high temperature resistance, cold resistance, wear resistance, antimagnetic electrical insulation, oil-free self-lubrication, and high speed. Can be used in extremely harsh environments and special working conditions. Due to these characteristics of ceramic bearings, ceramic bearings are widely used in aviation, aerospace, navigation, petroleum, chemical industry, automobile, metallurgy, electric power, textile, pumps, medical equipment, scientific research and national defense and military fields.
All-ceramic bearings refer to bearings whose rings and rolling elements are made of all-ceramic materials, including zirconium oxide (ZrO2), silicon nitride (Si3N4), and silicon carbide (SiC). Different materials are matched according to different operating conditions. retainer.
Compared with other ceramic materials, silicon carbide ceramics have the following characteristics: best resistance to chemical corrosion, especially resistance to hydrofluoric acid corrosion; high strength, high hardness, good wear resistance, small friction coefficient, and the highest temperature resistance . Under the same conditions, the durability of silicon carbide bearings in strong acid conditions can be more than 100 times that of 440 stainless steel bearings.
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