Detailed Product Description bronze bearing, bearing bush,self-lubricating bearing bush1.Series:SF-1,SF-2,FB090,JDB,FZ,JF800,FB09G2.Bushing :DU,DX,Bronze Bushing, Cast-Iron ... : limit:5m/s 1. DU Self-Lubricating bushing(1) Feature: a steel backing, a sintered porous bronze partivles interlayer, PTFE and Pb mixture ...