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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.

Thin Film Deposition for Pins & Friction Components

COD 11 corrosion-resistant bushings

To complement the diverse range of bushings and to offer the maximum articulation efficiency, HEF DURFERRIT has developed a range of shafts, sleeves and washers to provide customers with comprehensive solutions and superior performance.

As a solution provider in the field of tribology, our experts design and solve performance problems thanks to their knowledge of surface treatment, material selection and contact lubrication.

Several pins designed for extreme applications can be recommended for use with HEF bushings. PEL OX, PEL OXC, PEL® STC, FAM® OX or ST.

They combine high core hardness (> 850 MPa) and surface treatments which withstand wear & fretting corrosion and are designed with ease of pin disassembly in mind. Special polymer coatings or varnishes can further enhance friction properties.