(1) Bearing alloys, mainly alloys of tin, lead, antimony or other metals. Bearing alloys are less strong and more expensive. They must be used as bearing lining materials in bearing bushes of bronze, steel or cast iron to form a thinner coating.
(2) Tin-based bearing alloys have the advantages of good plasticity, thermal conductivity and corrosion resistance, and low friction coefficient and expansion coefficient, which are suitable for the production of important bearings, such as large machines such as steam turbines, engines, motors and air compressors. High speed bearing bush. The disadvantages are low fatigue strength and low operating temperature (not higher than 150 ° C), which is more expensive. The wider brand used is ZSnSb11Cu6.
(3) The strength, hardness, thermal conductivity and corrosion resistance of lead-based bearing alloys are lower than those of tin-based bearing alloys, and the friction coefficient is larger, but the price is relatively cheap. Suitable for manufacturing medium and low load bearing bushes, such as automotive, tractor crankshaft bearings, railway vehicle bearings, mill bearings, etc.