Compression with Passion
GHH RAND is one of the world’s market leader’s in the compressor industry. We develop, produce and deliver advanced solutions for the entire screw compressor market.
Our experienced and skilled Engineering staff is the basis for our technological leadership. In many cases our expertise and innovations opened new market and created business opportunities for our customers. Our industrial and specialized compressed air solutions provide significant features, benefits and added value for any compressed air requirement, in particular with our total lifecycle services. That way our solutions allow OEM customers easy selling of their products to end users.
Designed to deliver efficient and profitable service year after year our screw compressors are manufactured in our modern facility in Oberhausen, Germany to the highest standards in the industry. The robust design ensures reliable operation even under most difficult conditions.
High efficiency and long service life provide a high rate of return on investment with a short payback period.
GHH RAND is completely dedicated to serve the screw compressor market and uses the latest state-of-the-art equipment and processes to assure high quality and consistent on-time delivery. Our aim is to ensure that every operation contributes to longer life and higher performance of our compressors and above all to optimum customer service.
Oil-Injected Compressor Stage
Our delivery program includes belt, direct and gear driven airends. These compressor stages are manufactured with high precision and are suited for work under the most difficult conditions 24 hours per day. Recently we added to our famous series CE and CF the newest development – the OS series. With then new OS series we reach even higher levels of efficiency for screw compressors. Simplicity of the design increases reliability.
Highlights of our Oil-Injected Solutions
Highest efficiency
The proven asymmetric design of the GHH RAND rotor profiles provides maximum
performance and efficiency – Resulting in savings in power consumption at high
volume flow.
Long service life
The bearing arrangement has been designed to compensate radial forces in an optimum
way which results in long life with low vibration level.
Greatest possible prevention of leakages
Leakage problems are eliminated through three sealing lips and a special return path to
the suction side of the airend.
Optimum solution for your requirements
Optimum operating and power efficient conditions are provided in our gear drive solutions by a wide range of gear ratios.
Smart design enables belt loading to be cancelled by utilizing the internal compressoion forces.
Economical direct drive options.
Maximum flexibility
The possibility of base and flange mounting increases the flexibility of design for your package.
LC44 and LC44K – The Solutions for Non-Industrial Applications
Applications for non-industrial use have different requirements than industrial packages. GHH RAND provides the LC44 and LC44K as cost efficient, reliable solutions. These stages operate between 3 and 7.5 kW (4 and 10hp) with a maximum flow rate of 0.935m3/min (33.38CFM/min) and a maximum discharge pressure of 14 bar absolute (203psi).
Oil-Free Compressor Blocks
We are pioneer in the sector of oil-free compressors. The First oil-free compressor was developed and produced by us. Today GHH RAND offers a wide range of oil-free compressed air products: from blocks to customized industry solutions always with the highest reliability.
Our portfolio includes oil-free compressor solutions in several configurations:
One and two stage blocks for continuous operation
One stage blocks for jet starter applications
Stages for conveying of bulk materials
Highlights of our Oil-Free Solutions
Totally oil-free air
Reliable and field proven sealing arrange ensures separation of oil-free area from the oil needed for lubrication of gears and bearings.
Long service life
Our special bearing arrangement compensates radial forces in an optimum way which results in less vibrations.
High performance at low power consumption
GHH RAND rotor profiles have optimized asymmetric designs developed after many years of research and field tests. Our special, non-abrasive “UltraCoating” of rotors and inner parts of the housing allows reduction of clearances to a minimum.This results in high efficiency.
Low noise level
Tight rotor clearances allow low rotation of the rotors. This results in less friction and less vibrations.
Excellent running properties
Anti-friction bearings and dynamically balanced rotors ensure smooth operation.
No corrosion
Stainless steel rotors in the high pressure stage eliminate potential damage through corrosion
Gas and Refrigeration Compressors
GHH RAND has a long and successful experience in the refrigeration and gas compression business. First units were built in 1967. Our gas and refrigeration solutions are successfully applied for many different processes to refrigerants, oil compatible gases, and high suction air systems.
Highlights of the CU Series
Simple capacity control
Mainly equipped with flanged gear drive capacity that can be controlled
through speed adjustments of diesel engines or electrical frequency
High power efficiency
The provided selection of gear drives allows to adjust customer solutions to the optimum operating point.
Long service life
The CU Series is completely equipped with anti-friction bearings
resulting in vibrations being kept to a minimum.
Cost saving
No separate oil pump is necessary for most applications
due to the simple, intelligent design.
Highlights of the CR/SKK Series
Stepless Capacity Control
Compressor capacity is regulated by a hydraulic actuated slide valve that can be operated by a control system monitoring suction pressure, discharge pressure, engine load or gas flow rate.
Easy configuration
By replacing slide valves the volume ratio of the compressors can be easily configured.
Low maintenance
Equipped with hydrodynamic radial bearings the bearings will provide you with an extremely long service life when operated with the correct lubricant.
Suitable for high pressure applications
The GHH RAND precision rotors have optimized profiles for operation also at high compression ratios.
Long service life
The axial load balancing system utilizes discharge pressure
to reduce axial load on the male rotor axial bearing.
Customized Industry Solutions
For the different requirements of specific industry applications GHH RAND provides customized screw airends and compressor systems. These applications require a design of the screw compressor unit according to available space, difficult or constantly changing environment conditions or special drive demand. With know how and experience in customized compressed air solutions we developed optimum solutions for each of these requirements.
Depending on application our customized solution can be a special designed screw airend, pre-designed compressor package or a compressor kit including not only the screw airend, but also customized components as intake, thermostat and minimum pressure valves, air and lubricant cooling systems, separators and many other accessories. We supply not only compressors and components for our customers with specific industry requirements but also support them with engineering services at package design and production
Auxilliary air for vehicles
Our compressor kits with the oil-injected airends LC44 or CE55RW/G for air utilization in vehicles, fulfil customers requirements regarding small space available for installation.
Ground support equipment
For our compressor kits with oil-free compressor blocks CD14S to CD72S, there are optimum variations of gear ratios available which provide best speeds for diesel engines.
Welding applications
For air gouging applications we provide compressor systems with contact cooled screw airends series CE and CF.
Pneumatic conveying
In food, pharma or electronic industries our oil-free blocks CD9S up to CD72S and components are suitable for pneumatic material transport.
Drilling applications
As an on-board or portable unit, our compressor kits with high pressure units CF1000H and HR2/HR2.5 can be used with drill rigs.
Train braking systems
Small contact cooled CE, CI and CF airends can be utilized for integration into train braking systems. We also provide compressor kits for integration into track grinding machinery.
Fire and Rescue systems
We provide compressor kits with OS, CE and CF series to be integrated into fire trucks and mobile charging units.
Components
GHH RAND offers a wide selection of components that have been specifically designed in order to match the specifications of our airends in an optimum way when operating in your compressor package. These components are proven designs and can be supplied in airend kits to help reduce your costs and logistics. Besides our components simplify design,reduce product risks and cut assembly time. Below is an extract or our portfolio.
Controls
If you require electronic controls for your compressor package we can help. We have developed variations of electronic multifunctional controls in accordance with EC standards which can meet a wide variety of your requirements.
Intake Valve
To enable simple design of screw compressor packages for you we designed a special intake control. Acting as a tight shut-off valve it opens and closes the intake suction of the screw compressor automatically and ensures a safe package operation.
Inlet Air Filter
We offer inlet air filters for low, medium and high dust levels. Our filters are easy to maintain and are characterized by their compact design, low weight and excellent filtering properties.
Oil Filter
Our oil filters achieve the highest standards. The filtered dirt particles captured outside of the filter element are easy to remove after disassemble of the filter. An optional optical or electrical indicator always shows the current filter condition.
Coolers
GHH RAND oil- and air-coolers are characterized by a high specific performance, low resistance and optimum geometry.
Minimum Pressure Valve
The minimum pressure valve was designed to maintain the minimum pressure required for the lubrication of oil-injected rotary compressors. An integrated check valve prevents reverse flow from the compressed air network when the compressor is switched from onload or partial load to off-load or shutdown.
Oil Thermostats
GHH RAND oil thermostats are designed for temperature-dependent oil flow control in screw compressor systems. They prevent condensation in the system and maintain constant lubricating oil temperature and viscosity.
Value Added Services
PrimeCare Extended Warranty Program
We are so convinced of the quality and reliability of our innovative compression solutions that we are pleased to offer an extended warranty of up to five years when program requirements are met. The benefits of this program for our OEM customers are that they can pass on this warranty to their customers, reduce product risks, increase their customer relationship and obtain an attractive competitive advantage.
Engineering Services
Our engineering services can help bring you peace of mind and help you to develop and improve your packages. Our experienced and very capable engineering office supports all our customers by working with their teams to find solutions for each airend and compo nent application. Many years of experience enable us to help you achieve the optimum compressed air solution and to save costs without loss of quality or reliability.
Package Approval
GHH RAND is globally recognized as innovative and reliable provider for compressed air solutions. With our package approval you can benefit in two ways.
• Examination and consulting by our highly qualified engineers reduce your product
risks.
• Using our reputation on the final GHH RAND certificate as a marketing tool.
Training
Compression technology goes through rapid development. OEMs are confronted with new products and customer requirements continually. Users on the other hand have to maintain these new solutions. GHH RAND assists you to meet these challenges, by offering training courses globally in many diffe rent languages. Please contact us for further information on any one of these value added services.
Maintenance and Repair
Lubricants
Your compressor system will last longer and be more reliable when using our high quality mineral and synthetic lubricants. These lubricants have been specifically designed to match the different specifications and operating conditions of our airends. Engineered with excellent start up and operating lubrication characteristics they will not only provide you with long life, excellent cooling performance and improved compressor efficiency. Additional you will benefit from extended warranty when using our lubricants.
Spare Parts
We maintain stock of original spare parts in order to meet your demand. To save costs and reduce logistics we provide many of our spare parts in kits.
Exchange Airends and Rebuilds
We have a comprehensive range of exchange airends, rebuild kits and a factory rebuild service for our entire product portfolio, along with a dedicated team of specialists to help you with any special requirements you may have.
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