This is a steel based, sintered bronze spherical powder as interlayer and overlaid by a layer of POM, the surface of which is provided with oil indentations.
The thickness of the plastics layer is about 0.5mm.
A trace of oil or grease may be utilized and may work successfully under heavy load with oscillating motion and those which start and stop frequently under load.
Moreover, it is of low cost and long life. This kind of material is now 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.
It is a lead-free product.