Rotary Screw Air Compressors | 2 HP - 400 HP

We have partnered with equipment manufacturers that provide best-in-class energy efficiency and durability to ensure you get the lowest total cost of ownership for your compressed air system.

ELGi rotary screw air compressors provide best-in-class energy efficiency and reliability. Backed with an Uptime Guarantee, you can rest assured that your compressed air utility will keep your production running smoothly. ELGi rotary screw air compressors offer both lubricated and oil free option, as well as, integrated VFD controls to maximize efficiency and meet any air quality standard needed.

EN Series Rotary Screw Air Compressors 4–50 Hp

Presenting ELGi EN Series compressors, a compact approach to delivering more value, and more UPTIME for your investment. Our EN Series compressors deliver low noise level.

View Products

EG Series Rotary Screw Air Compressors 15–300 Hp

ELGi Global (EG) Series compressor platforms feature direct drive operation, industry-leading UPTIME and energy efficiency, and a full array of optional features.

View Products

EG Series Rotary Screw Air Compressors 125–200 Hp

The “EG Premium” is the new generation compressor series which represents the reflection of the current market requirements on energy efficiency, lesser maintenance and higher reliability.

View Products

AB SERIES | 15 - 150 HP
OIL FREE SCREW AIR COMPRESSOR

Every ELGi AB series customer across the world is assured of zero risk of contamination in the compressed air & guaranteed emission reduction while ensuring class zero air, free of oil residue, at all times.

View Products

Oil-Free Rotary Screw Air Compressors 60-500 Hp

ELGi is one of the very few compressor companies to design and manufacture oil-free airends. With in-house oil-free technology, the compressors are engineered to deliver maximum uptime and reliability.

View Products

CHAMPION CA SERIES OIL FREE SCROLL COMPRESSOR 3-10 HP

Champion designed the CA-Series Scroll compressor system to meet industrial and laboratory requirements for contaminant free, oil-free, clean air applications. 100% oil-less rotary scroll compressors from 3 - 10 HP.

View Products

What is a Rotary Screw Compressor?

Rotary screw compressors utilize a rotary-type positive displacement mechanism to compress air. It consists of two rotors, typically helical in shape, that rotate in opposite directions within a housing. As the rotors turn, the air is drawn into the compressor and trapped between the rotors and the compressor housing. The volume decreases as the rotors mesh together, compressing the air and increasing its pressure.

They provide continuous airflow without pulsations. This design results in smooth and efficient operation, making rotary screw compressors ideal for applications requiring a constant and reliable compressed air source.

How do Rotary Screw Compressors Work?

Here's an explanation of the main components and their functions.

Air Intake Through a Filter : The process begins with the air intake, where atmospheric air is drawn into the compressor through a suction filter. The filter removes any contaminants or particles present in the air.

Air End : The air end is the core component of a rotary screw air compressor. It contains two rotors, usually helical in shape, that rotate in opposite directions. These rotors have precise profiles that intermesh closely but without touching, creating a sealed compression chamber.

Compression : As the rotors rotate, the air is trapped in the spaces between the rotor lobes and the compressor housing. The volume of the compression chamber decreases as the rotors move closer together, causing the air to be compressed. The compression process is continuous and occurs smoothly without any pulsation, ensuring a constant flow of compressed air.

Lubrication System : A lubrication system is present to ensure smooth operation and reduce friction. The system typically consists of an oil reservoir, an oil pump, and a cooler. The lubricating oil is circulated throughout the compressor, providing lubrication for the bearings and sealing elements. It also helps in cooling the compressed air.

Air Receiver Tank : Once the atmospheric air is compressed, it is stored in an air receiver tank. The tank acts as a reservoir, providing a steady supply of compressed air to meet the demands of various applications. It helps stabilize pressure fluctuations and allows for the efficient distribution of compressed air.

The benefits of a Rotary Screw Air Compressor

RELIABILITY IS A KEY CHARACTERISTIC OF ROTARY SCREW COMPRESSORS

Rotary screw air compressors offer a range of benefits that make them a popular choice for various applications.

One of their primary advantages is high efficiency, as they excel at converting power into compressed air with minimal energy wastage. This translates into cost savings and reduced energy consumption

Another significant benefit is their ability to provide a continuous and smooth flow of compressed air, which is crucial for applications that require a consistent and uninterrupted supply of compressed air.

Rotary screw air compressors occupy less space compared to other compressor types, making them suitable for installations where space is limited. Furthermore, they operate at lower noise levels due to advanced noise reduction technology, which is advantageous for indoor applications or noise-sensitive environments.

Rotary screw compressors provide flexibility, as they come in various sizes and configurations to meet specific air volume and pressure requirements. They can also be customized with integrated dryers or filters to enhance air quality.

Financing available

We offer financing options to help you maintain your cash flow and financial budget. Financing can be used for equipment (air compressor, air dryer, etc.) or the complete turnkey installed compressed air system.