Features

Steel with PTFE fibre fabric
This new material use the PTFE fibres fabric overlay on metal backings, the fabric have very high load capacity and much longer operating life compare with conventional 3-layer bushes. The metal can be carbon steel (SPFF-S), stainless steel (SPFF-SS), bronze (SPFF-B) etc.

Suitable for rotary and oscillating movement, lower maintenance requirements due to the long re-lubrication intervals, lower wear, lower susceptibility to edge loading, no absorption of water and therefore no swelling, good damping behaviours, good resistance to shock loads. much long service life under lower speed with high load.

Typical Application

Now have been used like suspension and auxiliary of agriculture and construction machines, cranes and hydraulic and mechanical jibs, ball butterfly and sluice valves, water pumps, chemical industries etc.

Tech.Data

Max.Load

Static

350N/m㎡

Temp.

-50℃~＋250℃

Dynamic

180N/m㎡

Friction coefficient

0.03~0.20

Max.speed

Dry

0.5m/s

Thermal conductivity

42W(m﹡K)﹣1

Grease

＞1m/s

Max.PV(Dry)

Short-term

3.6N/m㎡﹡m/s

Coefficient of thermal
expansion

11﹡10﹣6﹡K﹣1

Continuous

1.8N/m㎡﹡m/s