... s bearing bushing,self-lubricating bearing bush1.Series:SF-1,SF-2,FB090,JDB,FZ,JF800,FB09G2.Bushing :DU,DX, ... : limit:5m/s1. DU Self-Lubricating bushing (1) Feature: a steel backing, a sintered porous bronze partivles interlayer, PTFE and Pb ... diamond shaped indentations or oil grooves as required by customers.(2) Application: hoisting machines and other construction machines, automobiles, trucks ...