... bearing bushing,self-lubricating bearing bush1.Series:SF-1,SF-2,FB090,JDB,FZ,JF800,FB09G2.Bushing :DU,DX,Bronze Bushing, Cast-Iron Embedded Bushing ... and Pb mixture as surface layer(2) Application: applied in various sliding articles of different kind of machines ... automobiles agri machines and forests machines ,etc DX boundary lubrication Bushing(1) Feature: steel as backing, sintered bronze ...