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H-Liner® Polymer Bushings

HEF Polymer bushings are the result of intensive research and development in the field of self-lubricated and zero-maintenance bearings. These polymer bushings are of woven structure, and made of PTFE and epoxy resin providing tensile strength that is vastly superior to injection molded polymer bushings – and vastly more resistant to high loads, seizure and galling.

They are well-suited to rotation and oscillation applications, and high-speeds. High-load polymer bushings from HEF are chemically inert, and have low water absorption. Their maximum working temperature range is up to 320°F (160°C).

H Liner Polymer Bushing

H-Liner M are manufactured with an homogeneous woven polymer material, on the complete wall thickness. This product is completely re-machinable and also available as flanged bushings, washers and slides. They are also widely used for when low water absorption or mis-alignement resistance is required.

H-Liner S is manufactured from a high strength composite fiberglass backing with an woven liner.

H-Liner S1 is made from high strength composite fiberglass backing with an improved wear resistance liner.

    Dyn. Load
Max Speed (m/s) Max Temp (°C) Low-Maintenance Wear resistance Low water absorption
H-Liner M 80 0.5 +130°C +++ ++ +++
H-Liner S 100 0.5 +160°C +++ ++ +
H-Liner S1 140 0.5 +160°C +++ +++ +

For optimal performance we recommend using a grinded pin with a roughness lower than Ra 0.4 μm and hardness higher than 400 HB. HEF DURFERRIT PEL® OX pins are particularly appropriate against H-Liner Bushings.

Advantages: Applications:
  • Maintenance free
  • Weight reduction
  • Noise reduction
  • Corrosion resistance
  • Good chemical resistance
  • Insulating material
  • Misalignment accommodation
  • Off-shore / oil & gas
  • Harbor
  • Hydropower Energy
  • Conveyor rollers
  • Handling equipment
  • Railways
  • Recycling industries