sliding bearing/composite bearing
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This is a steel based, spherical bronze powder as interlayer and overlaid by a layer of modified polyacetal copolymer plastics (POM) material, the surface of which is provided with oil indentations, and so it is known as boundary lubricating material.
The thickness of the plastics layer is about 0.5mm. A trace of oil or grease can work successfully under heavy load with oscillating motion and those which start and stop frepuently under load. Moreover, it is of low cost and long life.
Now This kind of material is widely used as bushes in chassis of automobiles, forging presses, metallurgical and mining machines, civil engineering machines, hydroelectric industrial machines and steel strip cold rolling machines