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2023
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04
How to choose oil-free self-lubricating bearings
The structure of the bearing is self-smoothing. Bearings are developed on the metal conflict surface of the bearing seat. The holes are orderly, large and suitable. A composite self-smoothing block made of molybdenum disulfide and graphite is embedded in the metal sleeve. Bearing friction area of solid smoothing agent up to 25-65%. The solid self-smoothing block can work normally at high temperature of 280℃. However, due to its low mechanical strength, weak bearing capacity and easy deformation, embedding it into metal holes can inhibit this defect, forming metal parts to play the role of load and have the smoothing function of smooth blocks.
The smooth mechanism of this kind of self-smooth bearing is that, in the sliding conflict process between the shaft and the sleeve, a part of self-smooth data molecules are transferred to the metal surface of the shaft, filled with small convex and convex, forming a relatively stable solid photosynovial film. A solid photosynovial film is formed between grinding to prevent shaft and sleeve adhesion and wear. This reasonable connection summarizes the complementary advantages of copper alloy and non-metallic antifriction materials, especially suitable for oil free, high temperature, high load, low speed, anti-pollution, anti-corrosion, strong radiation environment of the range of motion, it can be used in the special working conditions of water or other solution penetration, and the base can not be added smooth grease.
