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ball bearing screw - China Manufacturer
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Self-lubricating bearings in the appropriate size of the orderly arrangement of the development of the metal friction surface of the bearing base body cavities, and embedded in a composite self-lubricating block made of molybdenum disulfi de, graphite, etc. embedded in the metal sleeve, made of a composite bearing, the solid lubricant friction area of ​​25-65%. Solid self-lubricating block in a high temperature of 280 ℃ to work properly. But due to its low mechanical strength, carrying capacity is weak, easy to be deformed, it is inlaid in the metal hole tank will be able to suppress this disadvantage, the formation of a metal portion carrying role lubricating effect, self-lubricating block. Lubrication mechanism of such a self-lubricating bearings in the process of sliding friction of the shaft and sleeve, since the part of the molecule of the lubricating material transferred to the metal surface of the shaft on the fill tiny not flat, and the formation of a more stable layer of a solid lubricant film adhesive wear, resulting in solid lubricating film between the wear and to prevent the shaft and sleeve. This is a reasonable combination of integrated the respective complementary advantages of copper al loy and non-metallic antifriction material, particularly suitable for oil-free, high-temperature, high-load, low-speed, anti-fouling, corrosion, strong radiation environment movement increases, as well as special working conditions in the infiltration of water or other solution but could not add the lubricating grease.
Self-lubricating block area of ​​the total amount of surface area and the operation speed than the self-lubricating block, bearing strength related to running speed; bearing strength, metal occupies an area should be larger.china bearing company
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