bearing bushing 1.Series:SF-1,SF-2,FB090 ... mm2 3.Max speed: limit:5m/s bearing bushing,self-lubricating bearing bush1.Series:SF-1,SF-2,FB090,JDB ... or diamond shaped indentations or oil grooves as required by customers.(2) Application: hoisting machines and other construction machines, ... where is middle speed and high impact etc. FB09G ............ bearing bushing(SF-1,SF-2,FB090,JDB,FZ,JF800,FB09G ...