This kind of bushing has a backing made of bronze with particular formulation supported by certain angle and density and produced with advanced casting techniques. The solid lubricating material inlaid in the bushing is compounded in a  unique way. #500 is used in succesive casting machines, steel rollers in metallography, mineral machines, ship, turbogenerators, hydraulic turbines and injection molding machines for plastics, machine hand and the oil platform on sea, etc.