What is a rotary screw air compressor?

What is a rotary screw air compressor?

When it comes to modern industrial machinery, the rotary screw air compressor is one of the most widely used technologies. Renowned for its reliability and versatility, it is durable and suitable for a wide range of tasks in construction and various industries worldwide.

The concept of rotary screw air compressor


A rotary screw air compressor is a type of volumetric air compressor that utilizes two counter-rotating screw shafts to change the volume of air, thereby generating air pressure. Rotary screw air compressors are widely used in industry. With many advantages over piston air compressors, rotary screw air compressors are the top choice for applications that demand durability, high stability, and 24/7 operation.

There are two fundamental principles of the compression process in an air compressor. One of them is the positive displacement principle. There are many types of compressors that use this method, with the rotary screw compressor being the most common.

Classification of rotary screw air compressors

Rotary screw air compressors can be oil-lubricated

Rotary screw air compressors can be oil-lubricated

Oil-lubricated air compressors use lubricating oil inside the compression chamber to cool and lubricate the compressor elements. The lubricating oil helps form a sealing ring and also provides excellent noise reduction.

Oil-lubricated compressors are known for their reliability, durability, and efficiency, making them suitable for various manufacturing processes. Downstream equipment such as oil filters and dryers can remove any oil contaminants from the final product, producing a clean compressed air stream suitable for construction, waste management, mining, recycling, and various other applications.

Oil-free rotary screw air compressor


Oil-free air compressors do not use any type of oil in the compression chamber, effectively eliminating the risk of contamination. When air purity is a critical task for a business, and even the slightest contamination can disrupt processes or even damage the final product, oil-free compressor types provide peace of mind. For air without impurities, trust oil-free rotary screw compressors.

5 Benefits of Rotary Screw Compressors

As a chosen technology in many applications, rotary screw compressors offer numerous benefits to customers:

  • Continuous Operation

They can generate a continuous flow of air and pressure without the need for cycling on and off, resulting in continuous operation with little or no downtime.

  • Easy Maintenance
Easy Maintenance
Easy Maintenance

With very few moving parts and minimal contact points, wear and tear are minimized. Extended maintenance intervals reduce maintenance costs, and any scheduled inspections and repairs can be performed quickly, easily, and without complexity.

  • Powerful Performance

Rotary screw compressors can operate in challenging conditions because they have a high air flow rate and can function at extreme temperatures. This means the equipment can power pneumatic tools and heavy machinery with ease and efficiency.

  • Energy Efficiency

Having stood the test of time, these robust machines produce less heat and are more energy-efficient than other types of compressors. These design features mean they don’t lose power over time, keeping the long-term cost of the compressor low.

  • Low Noise

Operating quietly due to the small size of the equipment and the absence of moving parts, they are suitable for on-site installations.

Suitable for a Variety of Applications and Industries


Many businesses rely on rotary screw air compressors for their daily production capacity. They are highly suitable for heavy industrial operations due to their continuous operation and robust design.

Common industries that benefit from rotary screw air systems include automotive manufacturing, beer production, food packaging, aerospace, construction, and more. These compressors are ideal for both small and large-scale operations as they can handle a wide range of operating conditions, making them a perfect choice for many professionals.

For more information about rotary screw air compressors. Please quickly contact the hotline at +84 833 486 586 for fast support and consultation!


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Email: info@umac.com.vn