Oil Free Air Compressors: Best Choice for Pure Air
Two Stage Oil-Free Rotary Screw Compressors
Fixed and regulated speed rotary screw air compressors
The launch of this brand-new range of oil-free screw compressors offers the lowest total cost of ownership on the market, with up to 8% higher flow rates, up to 7% energy reduction and guaranteed air purity. These high output oil-free machines now cover a wide flow range from 14.6 to 28.3 m³/min. The DX90 to DX160 models are fixed speed and the DX90RS to DX160RS models are regulated speed.
Pressure range: 4 to 10.7 bar
Volume flow: Capacity of 6.7 to 28.3 m³/min
Motor power: 90 to 160 kW
✅ Pure, Contaminant-Free Air
Two-stage oil-free rotary screw compressors deliver Class 0 oil-free air—the highest purity level defined in ISO 8573-1—meaning no oil contamination in the compressed air. This is essential for sensitive applications like food & beverage production, pharmaceuticals, electronics, laboratories, and medical use.
🔁 Efficient Two-Stage Compression
The two-stage design compresses air in two steps which improves efficiency and temperature control vs single-stage compressors.
They maintain lower operating temperatures, improving reliability and extending service life.
💡 Energy & Cost Benefits
Modern two-stage oil-free models often offer energy savings and higher flow rates compared with older designs. Some report up to ~7–8% improved efficiency and lower lifecycle costs.
Regulated speed (RS) versions adjust output to actual demand, reducing energy usage further.
🔧 Low Maintenance
Without oil in the compression chamber, there’s no oil change or oil filter management, reducing downtime and service costs.
🛠️ Application Areas
Oil-free compressors (especially two-stage rotary screw types) are commonly used in:
Food & Beverage
Pharmaceutical / Medical
Electronics & Semiconductor
Chemical Processing
Sensitive manufacturing lines
Paint booths & textile industries
