Liquid nitriding is a subcritical surface enhancement process with one of the longest track records of success of any case hardening technology.
PVD coatings involve the deposition of thin (2-10 microns; 0.0001" – 0.0004") films on the surface of tools and components.
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 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 are required.
H-Liner S are manufactured from a high strength composite fiberglass backing completed with an woven liner inside.
H-Liner S1 are made from high strength composite fiberglass backing and completed with an improved wear resistance liner.
|Max Speed (m/s)||Max Temp (°C)||Low-Maintenance||Wear resistance||Low water absorption|
For optimal performance we recommend to use grinded pin with a roughness lower than Ra 0.4 μm and hardness higher than 400 HB. HEF DURFERRIT PEL® OX pin are particularly appropriate to work against H-Liner Bushings.