bearing bushing 1.Series:SF-1,SF-2,FB090,JDB, ... 140/mm2 3.Max speed: limit:5m/s bearing bushing,self-lubricating bearing bush1.Series:SF-1,SF-2,FB090,JDB, ... is based on cast irom Ht250 and embedded with solid lubricant.(2) Application: die guider, plastic injection machines etc JF ... for where is middle speed and high impact etc. FB09G ............ bearing bushing(SF-1,SF-2,FB090,JDB,FZ,JF800,FB09G...)