Between bearing and shaft neck part of the load is transmitted through
direct contact between the sliding surface, which is the boundary
lubrication state. So the friction, wear and heat is inevitable. How to
choose the sliding bearing materials to compensate for the lack of
lubrication condition,roughness measuring instrument
,it is particularly important, according to the working characteristics
of sliding bearing, sliding bearing materials should have the following
properties of the ideal .
(1) to reduce friction, material has the property of low friction
resistance, associated with the shaft material and lubricant. bearing cage
(2) the ability of wear resistance, abrasion resistance of the
materials, and the microstructure of the material, the yield strength
and hardness.
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