Product Description
Mixed bearings (Hybrid construction bearing) statement. When the rolling body adopts the ceramic material, it is defined as a mixed ceramic ball bearing (Hybrid construction ceramic ball bearing). The commonly used ceramic ball materials are zirconia (ZRO 2) and silicon nitride (SI3N4); the commonly used ring materials are bearing steel (GCR 15) and stainless iron (440, 440C) and stainless steel (304, 316, 316L)
The sexual ability of industrial silicon nitride ceramic materials and bearing steel
Density (Kg/m3) 3250 7800 Young's Modulus (GPa) 310 210 Compressive strength (MPa)> 3500
Fracture modulus (MPa) 700-1000 Vicker hardness (GPa) 14-18 8 toughness (MPa m1 / 2) 5-8 16-20
Thermal expansion coefficient (10-2 / K) 3 12 Thermal conductivity (W / mK) 20 30 specific heat (J/KgK) 800 450
Use upper limit temperature (K) 1050 400-600 high high rolling contact fatigue failure
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