Oil-free, dry running compressors - HAUG Kompressoren AG - #1

l\\ Compressor cross section showing the completely seeled configuration with magnetic coupling (top) and the conventional direct coupling with shaft seals (bottom).

OIL-FREE, DRY RUNNING COMPRESSORS FROM HAUG

Magnetic Coupling Option Ensures High Production Security

with Low Operating Cost

very precise manu fact tiring procedures), make it possible to produce dry running com­pressors that can be used for continuous operation even under extreme climatic conditions.

Extensive use of Light alloys in the moving components and a .short piston stroke that reduces the mean piston speed to less than 8.2 fps (2.5 m/s) produce very small mass forces and thus less vibration. As a direct consequence these compressors do not need a foundation.

Haug compressors are usu­ally directly driven by electric-motors. When the gas being handled has to be hermeti­cally sealed inside the com-

Fritz Haug AG of St. Gallen, Switzerland, was established in 1-896 and has long special­ized in the manufacturer of oil-less and dry-running trunk-piston com pressors used to compress air and other gases.

These small, compact pis-Toil compressors, with powers up to 100 hp (75 km are manufactured according to the kit system, which allows easy and cost-effective setup of units tailored to different applications according to cus­tomer specifications.

Depending on the suction pressure, compression ratio and the delivery pressure, which can reach 218 psi Cl 50 bar), these compressors fea­ture up to four stages.

Cylinders can be cooled by air or water according to the service, the delivery pressure and the gas being handled

All Haug compressors are designed for "oil-less" applica­tions, which means there is no oil anywhere in (he compres­sor. Not only can the cylinders run dry, but alio the crank mechanism runs with no oil. Such oil-free operation is made possible by the adop­tion of sealed special roller bearings filled with grease for life. Thanks to a patented con­necting rod system, ihe bear­ings feature an operating life of 10,000 to 20,000 hours without maintenance and after lubrication.

Cylinders feature internal

surfaces that are coated, honed with special machin­ery, thermally tempered and hardened for long life cycles. Aluminum pistons are coated witli Teflon, and the two-part piston rings ensure that com­pression efficiency is main­tained at a high level through­out the whole life. The choice of the piston ring ma­terial and the piston ring form is determined by the compres­sion media and the mode of operation.

The frictionless stainless steal valves feature large flow cross sections for minimizing pressure losses.

The use of high strength materials and adherence to tight tolerances (Shanks io