Oil Free Air Compressors: Best Choice for Pure Air
Two Stage Oil Free Rotary Screw Compressors DS – Series
CompAir has extended its Oil Free rotary screw compressor range with the new DS37-DS150 fixed and variable speed series.
What it is:
Class Zero Oil FREE Rotary Screw Compressor
Nominal Power from 37-150 kW
Capacity of up to 25.9 m³/min (@ 7 bar g)
Complementing the established 160 to 315 kW model range
Fixed Speed and Variable Speed (RS) Models
Air-cooled
Numerous Further Options
We are pleased to announce the launch of new oil-free rotary screw compressor models, complementing the established CompAir D-Series range and delivering reliability, dynamic efficiency, lower operating costs, and high-quality oil-free compressed air.
The new models are:
Class Zero Oil Free Rotary Screw Compressor
Nominal Power from 37-150 kW
Capacity of up to 25.9m3/min (@ 7 bar g)
Complementing the established 160 to 315kW model range
Fixed Speed and Variable Speed models
Air cooled
Numerous Further Options
Here’s a comprehensive guide to Oil-Free Air Compressors, especially focusing on Two Stage Oil Free Rotary Screw Compressors (DS-Series) — a premier choice when you need pure, contaminant-free compressed air for sensitive industrial applications.
Elgi Two Stage Oil Free Screw Air Compressor
₹5, 60, 000
•
Aajjo.com
CompAir D110 Oil Free Rotary Screw Compressor
₹5, 01, 000
•
Aajjo.com
CompAir D90 Oil Free Rotary Screw Compressor
₹30, 00, 000
•
Aajjo.com
Screw Compressor Oil Free Rotary Screw Air Compressor (37‑350 kW)
₹79, 53, 000
•
Aajjo.com
COMPAIR Variable Speed Oil‑Free Rotary Screw Air Compressors
₹1, 00, 000
•
Aajjo.com
Auliss Oil‑free Rotary Screw Air Compressor For Industrial Use
₹11, 27, 304.86
•
Alibaba.com
Oil Free Rotary Screw Compressor
₹42, 000
•
Aajjo.com
Oil Free Rotary Screw Air Compressor
₹15, 000
•
Aajjo.com
🔧 Top Oil-Free Rotary Screw Air Compressors (Industrial-Grade)
These are suitable for demanding industrial applications where air purity, reliability, and continuous operation matter most:
Elgi Two Stage Oil Free Screw Air Compressor – Heavy-duty two-stage oil-free compressor ideal for continuous industrial use.
CompAir D110 Oil Free Rotary Screw Compressor – Mid-range industrial model with reliable performance.
CompAir D90 Oil Free Rotary Screw Compressor – Higher-capacity solution for large-scale operations.
Screw Compressor Oil Free Rotary Screw Air Compressor (37‑350 kW) – Wide power range for heavy industrial needs.
COMPAIR Variable Speed Oil‑Free Rotary Screw Air Compressors – Offers variable speed drive for energy savings and flexibility.
Auliss Oil‑free Rotary Screw Air Compressor For Industrial Use – Industrial-grade solution with OEM options.
🧰 Smaller or Alternative Oil-Free Compressor Options
Good for lighter usage, workshops, or initial setups:
Oil Free Rotary Screw Compressor – Smaller rotary screw model.
Oil Free Rotary Screw Air Compressor – Entry-level compressor for basic oil-free needs.
📌 What Makes Two Stage Oil-Free Rotary Screw Compressors (DS-Series) Stand Out?
✅ 100% Pure, Contaminant-Free Air
These compressors are designed to deliver true oil-free air (ISO Class 0) — meaning no oil enters the compressed air stream. This is essential for industries such as:
Pharmaceuticals & Healthcare
Food & Beverage Production
Electronics & Semiconductors
Textiles & Precision Manufacturing
Painting & Coating Operations
Oil contamination can ruin products or processes — oil-free compressors eliminate that risk.
✅ Two-Stage Compression for Higher Efficiency
In two-stage rotary screw designs:
Air is compressed in two phases, improving efficiency and reducing heat.
Stainless-steel or specially coated rotors help in longevity and performance.
This results in better energy performance, lower operating costs, and longer service life.
✅ Designed for Easy Service & Monitoring
Modern DS-Series units often include:
Touchscreen controllers for easy monitoring
Smart features for performance trending and remote connectivity
Accessible service points for reduced maintenance time.
🏭 Why Oil-Free Rotary Screw Over Oil-Lubricated?
Oil-Free compressors offer:
Zero risk of oil contamination in the compressed air
Lower ongoing maintenance (no oil changes or disposal)
Better compliance with industry standards and regulations
Greater suitability for sensitive applications where purity is critical.
In environments like food processing or pharmaceuticals, even microscopic oil contamination can be unacceptable — making oil-free compressors the best choice.
🛠 Typical Applications
Oil-free compressed air is essential where air contacts:
End products (e.g., food, pharmaceuticals)
Sensitive equipment (lab instruments, semiconductor tools)
Clean processes (paint spraying, textile finishing).
💡 Choosing the Right Unit
When selecting an oil-free compressor, consider:
1. Flow Capacity (m³/min or CFM)
Match to your peak compressed air demand.
2. Pressure Rating
Higher pressure may
