SF is wall wrapped bearing made of triple layer composites material which consists of a steel backing, a sintered porous bronze particles interlayer and calendared with PTFE and Pb mixture as surface layer. It is of low friction coefficients and has good performance in anti-warranty-corrosion and can be used without oil lubrication. It is of low cost, compact, anti shaft seizing and low noise. inside diameter 3mm~200mm.
