... corners.Bearing materials:1) metal materials, such as bearing alloy, bronze, aluminum alloys, zinc-based alloy;2) The porous metal ... of the alloy less expensive, the use must be poured in bronze, steel or cast iron bearing, forming a thin coating.Porous ... lubricated bearings categories.4. bearing materials can be divided by bronze bearings, cast iron bearings, plastic bearings, jewel bearings, powder ...