No other compressor uncompromisingly fulfils the most demanding industrial requirements, allowing you to cover a broad range of volume flows with one machine. Their efficiency, longevity, and operational availability have made the Delta Screw Compressor one of the world’s best-selling compressors.

That said, Delta Screw’s most appealing factor is its flexibility. You can choose from nine direct-drive machines, two compressor groups, various discharge port sizes for ideal internal compression, and an extensive range of possible accessories and adaptations.

Our extended Delta Screw series also includes seven belt-driven compressor models ideal for a volume flow of between 120m³/h and 2,650m³/h. Thanks to its flexibility, it can operate reliably regardless of the type of deployment you choose and the temperature zone you are in.

Screw compressor units Delta Screw with belt drive

Type of technology
Screw compressors
Positive pressure , Negative pressure
Volume flow
120 to 2,650 m3/h
air , neutral gases , toxic , combustible , explosive , corrosive , mixed

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What is an Oil-Free Screw Compressor?

A screw compressor is a type of air compressor that powers twin-shaft rotating lobe machines. They work on positive displacement principle with internal compression and are so-called compulsive conveyors. There are different types of rotary screw air compressors, such as oil-injected screw compressors and oil-free screw compressors. Others include direct and belt-driven. 

Oil-free options do not use oil when it comes to compressed air. In other types of compressors, oil is injected to seal rotors, offer lubrication or provide water cooling, air cooling, etc. In this model, AERZEN uses precision and excellence to create an oil-free option of the highest quality. 

What are the Key Benefits of Oil-Free?

Rotary screw air compressors without oil offer manufacturers a huge range of benefits everywhere. Those benefits include: 

  • Less Impact on the Environment - The world is racing to reduce oil use to prevent its negative impact on the environment. This model offers higher quality results with a more positive environmental footprint. Not only is less oil being used, but the disposal of oil is no longer a concern. 
  • Lower Cost of Ownership - Maintenance costs are reduced with an oil-less compressor. From oil changes to filters, the cost to maintain the machine at optimal function is less work for your team. 
  • Energy Efficiency - Screw compressors without oil are more energy efficient in the long term. 
  • Reduced Contamination Risk - The risk of contamination is lower with oil-free compressed air systems, helping to ensure products remain clean across industries with strict standards like food and beverage, pharmaceuticals, etc.
  • And More - The list does not end there. The key benefits of oil-less compressors are endless. 

Quality is Not an Option; it is Essential

At AERZEN, quality is not an option; it is essential. Our oil-free rotary screw air compressors are the industry's best option and can be relied upon to create high pressure for the pneumatic transport of powders, bulk goods or ash. They aerate sewage tanks, keep lakes and harbors clear of ice, supply oxidizing air for power plants or start jets for aircraft turbines. The potential applications are vast.

The benefits of choosing AERZEN include:

  • Biggest Range of Models - Find the largest number of options to fit your specific needs. 
  • Highest Number of Possible Modifications - AERZEN offers flexibility and versatility by offering modifications at a high level. 
  • Widest Range of Accessories - Find everything you need for the perfect setup. AERZEN has the right setup for every application. 

What makes AERZEN screw compressors special is that we offer reliable, easy to maintain, easy to use, flexible, and energy efficient technology that reduces cost while optimizing outcomes. Machine and air quality is our number one priority so that you have exactly what you need to achieve the best possible results. 


What is an Oil-Free Screw Compressor?

Oil-free air compressors do not use oil when it comes to compressed air. In other types of compressors, oil is injected to seal rotors, offer lubrication or provide cooling. With oil-free screw compressors, precision is used to create an oil-free option of the highest quality. 

Are Rotary Screw Compressors Oil-Free? 

Sometimes. Not every rotary screw compressor is oil-free, but some are depending on the manufacturer. 

What is the Advantage of an Oil-Free Air compressor? 

Benefits of an oil-free air compressor include things like less environmental impact, fewer maintenance costs, energy efficiency, and lower contamination risk.