ELGi OIL-FREE AIR COMPRESSORS – CERTIFIED CLASS ‘0’
RELIABLE COMPRESSED AIR FOR CRITICAL APPLICATIONS
WHAT IS AN OIL-FREE AIR COMPRESSOR?
An oil-free air compressor is designed to deliver oil-free compressed air. Unlike traditional compressors that use oil for lubrication, ELGi’s oil-free screw compressors rely on precision engineering to eliminate oil contact in the compression chamber. As one of the leading oil-free air compressor manufacturers, ELGi provides a wide range of oil-less air compressors and industrial oil-free air compressors that ensure Class ‘0’ air compressor performance for industries such as pharmaceuticals, food & beverage, and electronics.
EXPLORE OUR OIL-FREE AIR COMPRESSORS
ELGi offers advanced oil-free compressor solutions engineered to meet the highest standards of quality and reliability.
OF SERIES OIL FREE ELECTRIC AIR COMPRESSOR
TWO-STAGE AIR COOLED AND WATER COOLED AIR COMPRESSOR 45-450KW
ELGi is amongst the few oil free air compressor manufacturers with an in-house designed and manufactured oil free airend. ELGi’s oil free range provides Class 0 compressed air with leading energy efficiency, reliability, and low operating costs supported by Best-in-class warranty.
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AB SERIES OIL FREE ELECTRIC AIR COMPRESSOR
WATER INJECTED SCREW COMPRESSOR 11-110KW
Optimised component layout of the AB Series provides easy serviceability with reduced service time. Incorporating superior safety norms, the compressors not only ensure minimum energy losses and low air outlet temperatures but are also highly reliable and compact.
KNOW MORE CONNECT WITH USTechnical Specifications
| Model Series | Power Range | Working Pressure | Max Air Flow | Types | Special Feature |
|---|---|---|---|---|---|
| OF SERIES | 45-450 kW | 7 to 10 bar g | 5.38 m3/min – 49.30 m3/min | Oil-Free | Class ‘0’ compressed air |
| AB SERIES | 11-110 kW | 7 bar g to 12 bar g | 0.85 m3/min to 15.9 m3/min | Pure, oil-free compressed air for | Zero-tolerance environments |
Our OF and AB Series compressors are designed for business that require zero oil contamination.
Features & Benefits of ELGi Oil-Free Compressors
* Terms & Conditions apply.
INDUSTRIES WE SERVE
ELGi oil-free compressors are ideal for applications where compressed air purity is critical:
Why Choose ELGi?
- 100% Oil-Free air technology ensures contaminant-free compressed air for critical applications.
- ISO Class 0 certified air quality for maximum product safety and regulatory compliance.
- Patented oil-free airend design delivers high performance with long component life.
- High energy efficiency with Variable Frequency Drive (VFD) options to reduce power consumption.
- Built for continuous duty with low operating temperature and minimal wear.
- Significantly reduced lifecycle cost compared to traditional oil-free systems.
- Minimal maintenance requirements — no oil replacement, filtration costs or disposal challenges.
Working Principle of Oil-Free Screw Compressors
The working principle of an oil-free screw air compressor is based on precision rotors that compress air without oil lubrication. In these compressors, timing gears maintain rotor synchronisation, ensuring no metal-to-metal contact. This design guarantees Class ‘0’ compressed air output. The two-stage compression process, combined with intercooling and aftercooling, enhances efficiency and ensures consistent compressed air quality. ELGi’s oil-free electric air compressors deliver optimal performance with minimal environmental impact.
Why Choose ELGi Oil-Free Screw Air Compressors – Class 0 Compressed Air Solution?
Experience unmatched air compressor technology from ELGi. Our oil-free air compressors and oil-free screw compressors deliver Class ‘0’ compressed air as per ISO 8573-1, ensuring oil-free compressed air for sensitive industrial applications. Trusted as leading oil-free air compressor manufacturers , ELGi designs industrial oil-free air compressors to provide high performance, low maintenance, and maximum compressed air purity.
The OF Series features a food-grade coating that prevents metal particle accumulation, guaranteeing Class ‘0’ compressed air, contaminant-free compressed air for industries like pharmaceuticals, food & beverage, electronics, dairy, and chemical processing.
Low Ownership Costs
ELGi’s oil-free technology optimises energy efficiency while reducing operating costs by eliminating oil-related pressure drops. Maintenance is simple with easy access to critical components, saving time and resources. With a complete range of upstream and downstream accessories, our oil-free compressors provide superior performance while protecting your equipment and lowering total ownership costs.
Innovative Design and Proprietary Technology
ELGi’s in-house design and manufacturing of oil-free air ends set its oil-free screw air compressors apart. Proprietary oil-free technology, including the η-V rotor design, minimises pressure loss and enhances efficiency. With a diverse range of oil-less compressors, ELGi delivers oil-free compressed air tailored to the needs of pharmaceuticals, electronics, food & beverage, dairy, and chemical industries.
Industry-Leading Reliability and Efficiency
The OF Series oil-free screw air compressors feature PTFE-based, food-grade coatings for corrosion resistance and operation up to 250°C. The AB and OF Series offer long-term reliability and consistent performance. Industries relying on Class ‘0’ compressed air trust ELGi’s unmatched design for efficient, uninterrupted operations.
HOW ELGi Oil-Free Compressors Support Your Business?
ELGi’s oil-free air compressors ensure the highest compressed air quality in critical applications, replacing traditional oil-lubricated compressors where contamination risks are unacceptable. Key oil-free compressor advantages include:
- Oil-free compressed air
- Energy efficiency
- Reduced maintenance
- Compliance with strict industry standards
ELGi Oil-Free Air Compressors
ELGi offers a wide range of oil-free screw air compressors engineered to provide certified Class ‘0’ compressed air reliably and efficiently. Designed to provide ISO 8573-1 standard compressed air, our compressors provide minimal risk of contamination, exceptional performance, and low operating costs.
How Oil-free Screw Compressors Work?
ELGi oil-free screw compressors operate using two helix-shaped rotors to compress air efficiently, delivering a continuous supply of high-quality compressed air for industrial applications.
ELGi Oil-Free Electric Air Compressors – OF Series
The OF Series oil-free electric air compressors offer Class ‘0’ compressed air, ISO 8573-1 compliant, with energy-efficient two-stage compression. Food-grade coatings on rotors ensure oil-free compressed air. With our oil-free screw air compressors, businesses get reliable, environmentally-friendly, and cost-effective compressed air solutions.
Two-Stage Air & Water-Cooled Air Compressors
45–450 kW, fixed and variable speed, suitable for industries intolerant to oil contamination.
ELGi Oil-Free Electric Air Compressors – AB Series
The AB Series industrial oil-free air compressors are designed for zero oil tolerance and reduced environmental impact. They deliver Class ‘0’ compressed air, compliant to ISO 8573-1 & 8573-7 standards, with low wear, consistent performance, and high reliability. Optimised layout allows easy maintenance and energy-efficient operation, making the AB Series the preferred oil-free compressor in industrial applications.
Available from 11 to 110 kW, fixed and variable speed.
Exceptional Construction and Performance
ELGi oil-free compressors are built with corrosion-resistant rotors, high-temperature endurance, and measures to prevent dry-running, ensuring rugged and reliable operation under varied conditions. Stainless steel rotors as part of the AB Series guarantee uninterrupted productivity.
ELGi oil-free compressors offer advanced technology, high efficiency, low maintenance, and compliance with strict industry standards, making them the preferred solution for critical industrial applications.












