Which is better between silicon carbide sleeve and metal sleeve?

Shaft sleeve is designed to reduce friction and wear during axial movement. The basic use is similar to the bearing.
Shaft sleeve has a lot of material. There are silicon carbide sleeve also has a metal sleeve. Many customers have asked, silicon carbide sleeve and metal sleeve which are better?
Reactive sintered silicon carbide sleeve is the use of silicon carbide and carbon at high temperature synthesis, with corrosion resistance, wear resistance, high temperature, suitable for precision, high sealing requirements of mechanical products, such as high pressure pump, magnetic pump And so on.
Metal sleeve material useful copper, but also use high hardness alloy, the price and performance there are many grades, need to choose according to the actual need of the appropriate sleeve. But the wear resistance of metal bushings and silicon carbide sleeves compared to check too far.

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