Appearance：Tin or Copper plated

Wear-resisting layer：PTFE/teflon

Lubricating Way：Maintenance-free bearing

Mterial structure：

SF-1 bushing used high quality low-carbon steel plate as base, sintered porous bronze as its interlayer and the compound of PTFE and lead as its surface.

SF-1 bushing is wrapped bearing made of triple layer composite material which consists of a steel backing, a sintered porous bronze particles interlayer and coated with PTFE and lead mixture as surface layer. It is of low friction coefficient, anti-wear, anti-corrosion and can be used without oil,or only a trace of oil is needed . Moreover, it is of low cost, low vibration, low noise, compact and light in weight . SF-1 is widely applied in various sliding articles of different kind of machines,such as textile machines, tobacco machines, hydraulic vehicles, automobiles, agriculture and forestry machines, and so on.

1. PTFE with oil fibre can protect the shaft,while machine in operation.

2. It is of low friction coefficient,good anti-wear. 

3.  Good running in property.

4.  It fits well in motion of circumrotation,sway and to-and-fro. 

5.  Good anti-corrosion. 

6.  It can be used in food machine, pharmaceutical machine etc.due to lead-free. 

7.  It is mainly used in the condition of strong acid and alkali, such as chemical industry, pumps,valves etc.