937.323.2556 Email Us

Liquid Nitriding

Liquid nitriding is a subcritical surface enhancement process with one of the longest track records of success of any case hardening technology.

PVD Coatings

PVD coatings involve the deposition of thin (2-10 microns; 0.0001" – 0.0004") films on the surface of tools and components.

Engineered Bushings

HEF bushings are recognized worldwide for their excellent frictional and anti-seizure properties, and ability to withstand high loads.

PEL® HP Bushing

PEL BH spherical high load bushings

PEL HP bushings have an excellent resistance to wear and seizure thanks to the combination of a duplex surface treatment and optimized surface topography.

They work very well with translation movements and are ideal for severe operating conditions: high pressure, abrasion, shocks and corrosion.

With these bearings lubrication intervals are increased leading to reduced maintenance.

    Dyn. Load
N/mm2)		 Max Speed (m/s) Max Temp (°C) Low-Maintenance Wear resistance Low water absorption
PEL HP 100 1.5 +250°C ++ ++ ++

Mating Shaft:
For optimal performances of the joint, the surface roughness should be inferior to Ra 0.8 μm and the hardness should be superior to 56 HRC. For optimal performances, special shafts are available from HEF DURFERRIT: PEL ST, PEL STC.

Advantages: Applications:
  • Interval of lubrication up to 250 hours
       (depending on the working conditions)
  • Excellent resistance to seizure and wear
  • Excellent distribution of the grease on all the friction surface
  • Attachment / grapples
  • Handling
  • Agriculture