GFB-FU Sintered Bronze GFB-FU the bronze powder is mold pressed under high pressure and then sintered under high temperature, and oil is soaked into the homogeneously spreaded tiny pores of the metal under vacuum. GFB-FU bearing can withstand dry condition in medium speed and low load for sometime. Moreover it is cheap and stable in dimension. This is widely used in domestic electric and electronic machines, electric tools, Textile machines, chemical engineering machines, automobiles and official business machines.