... chemical industry , steel rolling ,etc.2. high hardness, small friction coefficient, good wear-resisting property, without harming the ... 100m/s) without lubricating oil.Raw marerialHigh density, Fine grain size, High purity, High strength, Low specific resistance, ... to 20um. wear-resistance carbon graphite bearing for non-oil lubricative machine wear-resistance carbon graphite bearing for non-oil ...