High performance reliable 2-stage oil free compressor blocks for continuous operation in demanding applications including: chemical, automotive, pharmaceutical, food and beverage industries, air separation systems, etc.

Totally oil free air compression

Lifetime compression efficiency: rotors and internal housing surfaces treated with Ultracoat (Our coating prevents corrosion and improves the efficiency of the compression process. Ultracoat has an exceptionally long life and is resistant to high temperatures and pressures.)

No corrosion due to stainless steel rotors in the high-pressure-stage

GHH RAND rotor profiles for high efficiency

Robust design reliable in operation under the most difficult conditions

Over 60 years market experience in oil free compressor units!

Ultracoat

Using Ultracoat in our oil free compressors is the key to their reliability, long life, and excellent efficiency. The outstanding efficiency of our dry-running screw compressors is down to our coating (Ultracoat) which we use for coating our rotor profiles, sealing journals, housing bores, and end covers.

This coating fulfills two essential requirements:

• One is for improving the efficiency which also reduces discharge temperature of the air end, increases volume flow, and decreases power consumption.

• In addition, this coating offers highly efficient corrosion protection even under extreme conditions at 270°C.

In order to achieve high efficiency, the Ultracoat sacrificially wears during the first test run. This is like lapping in components which ensure that the clearances are as small as possible and this, among other things, is what makes our oil free machines so efficient.

Starting in 1991, GHH-RAND did extensive work with the research department of a world acclaimed University with the goal to develop the best coating in the industry. In early 1995, we then finalized its development in cooperation with a well-known manufacturer of coatings, where we came up with one of the best solutions with exceptional bonding qualities. This gav