... hardness&density High precision, oem offered SF-2 Series Oilness bearing 354130:Availability: Cylindrical bushes, flange bushes, thrust washers ... .01~0.03 mm2. Sintered bronze powder: 0.2-0.3 mm 3. Low carbon steel backing 0 ... .7~2.3mm 1.process: mixing--compacting--sintering--resizing--cleaning ... SF-1P, SF-1W, SF-1B, SF-1S, SF-2, SF-2Y, JF-800, FB090, FB09G, FB08G, FB092, ...