Sintered PTFE and Bronze on Steel Backing, surface with copper-plating or tin-plating

PTFE / Fibre + Bronze + Steel + Copper plating / tin-plating

Features
Suitable for dry running with a low coefficient of friction, low wear rate, good sliding characteristics, the transfer film created will protect the mating metal surface. 
Suitable for rotary and oscillating movement, high chemical resistance, lower absorption of water and reduced swelling. Also performs well with lubrication.
All our DU products are manufactured under DIN EN ISO 9001, ISO/TS 16949 and ISO 14001 approved quality management systems.

Structures

1. PTFE/Fibre mixture thickness 0.01~0.03mm, provides an excellent initial transfer film, which effectively coats the mating surfaces of the bearing assembly, forming an oxide type solid lubricant film.
2. Sintered bronze powder thickness 0.20-0.35mm, provides Max. thermal conductivity away from the bearing surface, also serves as a reservoir for the PTFE-Fibre mixture.
3. Low-carbon steel, gives exceptionally high load carrying capacity, excellent heat dissipation.
4. Copper/Tin plating thickness 0.002mm, provides good corrosion resistance.

 Physical and Mechanical Properties

 Usage

 Thermal Conductivity λ

40

W/mK

  dry

good

 Maximum Operating Temperature Tmax

280

°C

  oil lubricated

good

 Minimum Operating Temperature Tmin

-200

°C

  grease lubricated

fair

 Compressive Yield Strength σc

350

N/mm2

  water lubricated

fair

 Maximum Static Load Psta,max

250

N/mm2

  process fluid lubricated

fair

 Maximum Dynamic Load Pdyn,max

140

N/mm2

 Maximum Sliding Speed V-dry

2.5

m/s

 Maximum PV Factor-dry, continuous operation

1.8

N/mm2 * m/s

 Maximum PV Factor-dry, intermittent operation

3.5

N/mm2 * m/s

 Coefficient of friction f-dry

0.02-0.25

-

 Coefficient of friction f-oil lubricated

0.02-0.12

-