PTEF Wrapped Bearings

With low carbon steel as the backing, sintered bronze as medial layer,mixed PTFE with fibers as self- lubricating layer.
Suitable for dry running with low coefficient of friction, low wear rate,good sliding characteristics,the transfer film created will protect the mating metal Surface.

They offer good wear and low friction performance over a wide range of loads, speeds and temperatures in dry running conditions Suitable for linear, oscillating and rotating movements, Very good performance in lubricated applications and Good performance in greased applications

Application characteristics

  1. Suitable for oilless or few grease working conditions
  2.  Long maintenance-free
  3. Long operating life due to low friction
  4. low vibration, low noise and non-pollution in operation
  5. Thin wall thickness & low weight for the machine with compact design
  6. low hardness of mating shaft can be mated, so the shafts processing is easy
  7. Lower heat dissiption
  8.  lower absorption of water heat dissipation, and reduced swelling,to keep the exact sizes
  9. Cu or Tin plated in outer Surface, for good anit-corrosion

PTEF Wrapped Bearings​

Learn more about PTEF Wrapped Bearings​.
PTEF Wrapped Bearings Products

Technical Data:

  Steel back + Porous Bronze Sinter + PTFE + FillersSteel back + Porous Bronze Sinter + PTFE + Lead
Max.LoadingStatic250 N/mm²250 N/mm²
Low Speed140 N/mm²140 N/mm²
Rotating Oscillation60 N/mm²60 N/mm²
Max.PV limitShort Term Operation (Dry)3.6 N/mm² . m/s3.6 N/mm² . m/s
Continuous Operation (Dry)1 N/mm² . m/s1.8 N/mm² . m/s
Hydrodynamic10.0 N/mm² × m/s5.0 N/mm² × m/s
Temperature Range -195˚C~ + 280˚C-195˚C~ + 280˚C
Max.Speed VDry Running2.52.5
Hydrodynamic2.52.5
Coefficient of frictionDry Running0.04 – 0.25 0.02 – 0.25
Hydrodynamic0.02 – 0.080.12 – 0.02
Thermal conductivity 42 42 
Coefficient of thermal expansion 11×10-6 W(m.k)-111×10-6 W(m.k)-1
Shaft surface roughness, RaDry0.3 – 0.5 µm  0.3 – 0.5 µm  
Lubricated

≤ 0.05 – 0.4 * µm

≤ 0.05 – 0.4 * µm
Shaft surface hardnessUnhardened Acceptable, Improved Bearing Life

> 200HB

> 200HB
Depending on operating conditions 

 

 

Main Features:

Sliding★★★★★
Abrasion Resistance★★★★
Anti-bite Shaft★★★★
Corrosion-resistant★★★★
High loading★★★
Environmental protection★★

Operating Performance:

Dry★★★★
Oil Lubricates★★★★★
Grease Lubricated★★★★
Water Lubricated★★★