... 3.Max speed: limit:5m/s bearing bushing,self-lubricating bearing bush1.Series:SF-1,SF-2,FB090,JDB,FZ,JF800,FB09G2.Bushing ... steel backing, a sintered porous bronze partivles interlayer, PTFE and Pb mixture as surface layer(2) Application: applied in various sliding ... and forests machines ,etc DX boundary lubrication Bushing(1) Feature: steel as backing, sintered bronze spherical powder as interlayer, ...