Silicon Nitride Bearing
  • Silicon Nitride BearingSilicon Nitride Bearing
  • Silicon Nitride BearingSilicon Nitride Bearing
  • Silicon Nitride BearingSilicon Nitride Bearing

Silicon Nitride Bearing

Silicon Nitride is an ideal material for bearings. Ceramic bearings have good wear and corrosion resistance, and great mechanical strength under high temperature. Nextgen Advanced Materials supplies the Silicon Nitride Bearing with high quality and fast delivery. Meanwhile, the customization is available.

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Product Description

You can rest assured to buy Nextgen Silicon Nitride Bearing from our factory and we will offer you the best after-sale service and timely delivery. The high standards we have established since our inception and maintained to date have earned us a solid reputation and helped us to attract a large number of new customers and talents.


Silicon Nitride is a high-melting-point ceramic material that is extremely hard and relatively chemically inert. The material is prepared by heating powdered silicon between 1300 °C and 1400 °C in an atmosphere of nitrogen. Then the powder of silicon nitride can be sintered to designed shape. Silicon Nitride is an ideal material for bearings. Ceramic bearings have good wear and corrosion resistance, and great mechanical strength under high temperature. Si3N4 bearings have already been applied in automobiles, rockets high-speed engines, equipment working in a corrosive environment and some performance model cars.  As the price of ceramic materials decreased, it could have more applications.


Comparison of ceramic and steel for bearings

Si3N4 ZrO2 Steel
Working temperature 800℃ 800℃ 180℃
Density 3.24 g/cm3 6 g/cm3 7.8 g/cm3
Thermal expansion coeff. 3.4×10-6 10.5 12.5×10-6
Hardness, HV 1500 1300 About 750
Young’s Module 320 GPa 210 GPa 208 GPa
Corrosion resistance Good Good Poor
Thermal conductivity Low Low High
Magnetism None None Yes
Wear resistance Excellent Excellent Good



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