... :140/mm2 3.Max speed: limit:5m/s self lubricating bearing:1.Series: SF-1, SF-2, FB090 ... :140/mm24.Max speed: limit:5m/s1. DU Self-Lubricating bushing (1) Feature: a steel backing, ... on cast irom Ht250 and embedded with solid lubricant.(2) Application: die guider, plastic injection machines ... middle speed and high impact etc. FB09G ............ self lubricating bearing(SF-1,SF-2,FB090,JDB,FZ,JF800,FB09G ...