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Bearing material should have properties
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| Time：2016.09.08 News Sources：Shandong Xinkaite bearing Co.,Ltd. Views：
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1. friction compatibility
Prevent adhesion and formation of boundary lubrication properties when the shaft diameter and bearing direct contact. Effect of Friction Material compatibility factors are:
(1) the degree of difficulty as vice material alloy metallurgy.
(2) materials and lubricants affinity and capacity.
(3) to the Deputy material without lubrication friction coefficient.
(4) The microstructure of the material.
Thermal conductivity (5) of the material.
(6) the surface energy characteristics of the material and the size of the oxide film.
2. embeddedness
Material allows the lubricant foreign hard particles into the clamp and the ability to prevent scratching or (and) abrasive wear. Metal materials, low hardness and elastic modulus are low, Embedded like, but not necessarily non-metallic materials, such as carbon graphite, low modulus of elasticity, but embedded bad. Sunthai sliding bearings usually softer material and a harder material friction pieces, usually a relatively soft material of the pad.
3. conformability
In the running-in process and the bearing shaft diameter, the shaft diameter is reduced and the pad processing error, concentricity error, the surface roughness parameters, the contact evenly, thereby reducing the ability of friction, wear rate.
4. Friction compliance
Material surface by plastic deformation compensation sliding friction surface with initial poor performance and shaft flex. Low modulus of elasticity of the material better compliance.
5. Wear Resistance
Deputy material into wear resistance. Under the provisions of the wear conditions, the wear rate or wear with a degree, the amount of wear of the reciprocal representation abrasion resistance.
6. fatigue resistance
Materials under cyclic loading resistance to fatigue failure. Temperature in use, the strength of bearing materials, hardness, impact strength and fatigue resistance against organizational uniformity is important. Conformability, good embedding material, often poor fatigue resistance.
7. corrosion resistance
Materials resistant to corrosion. When used in lubricating oil in the atmosphere will gradually oxidized to produce an acidic substance, and in most lubricating oils also contain extreme pressure additives, they will corrode SKF bearings materials, therefore, SKF Bearing material requires corrosion resistance.
8. Cavitation Erosion Resistance
In the solid state to the liquid movement, when the bubbles in the liquid near the solid surface rupture, resulting in partial or local high temperature high pressure impact will cause cavitation wear. Material resistance to cavitation wear resistance called cavitation resistance. Typically, the copper-lead alloy, tin-based SKF bearings and alloy aluminum zinc silicon alloy better resistance to cavitation.
9. compressive strength
Way to withstand bad load capacity without being squeezed or size does not change.
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