Two Stage Oil-Free Rotary Screw Compressors D-Series 37-75kW
What it is:
- Class Zero Oil FREE Rotary Screw Compressor
- Nominal Power from 37-75 kW
- Capacity of up to 12.7 m³/min (@ 7 bar g)
- Complementing the established 75 to 315 kW model range
- Fixed Speed and Variable Speed (RS) Models
- Air-cooled and Water-cooled
- Numerous Further Options

CompAir has extended its oil free rotary screw compressor range with the new D37-D75 (RS) Series.
The new models are:
• Class Zero Oil FREE Rotary Screw Compressors
• Nominal Power from 37-75 kW
• Capacity of up to 12.7 m³/min (@ 7 bar g)
• Complementing the established 75 to 315 kW model range
• Fixed Speed and Variable Speed (RS) Models
• Air-cooled and Water-cooled
• Numerous Further Options
The range covers air and water-cooled models from 37 to 75 kW and is available in both fixed and regulated speeds (RS) delivering ISO 8573-1:2010 Class 0 certified 100% oil-free air for the most critical applications, e.g. within the food and beverage, pharmaceutical, textile, and electronics industries. No oil is used in the compression elements, neither for sealing or lubricating the rotors, nor for cooling the compression process directly, reducing the risk of costly downtime and contaminated products.
The complete range now runs from 37 to 315kW, Pressure range 4 to 10 bar, Volume flow 5.1 to 51.8 m³/min and can offer:
- Air purity that meets the most stringent hygienic standards
- Award-winning Class 0 Certified oil & silicone-free screw compressors
- High efficiency, low pressure losses, low temperature operation & economical control
No matter what industrial sector, there is a growing demand for higher quality, oil-free compressed air that meets the stringent quality standards. Whether it is needed for food and beverage or chemicals production, supply of pharmaceuticals, electronics or sensitive components, manufacturers will no longer accept the risk of product or equipment contamination. For this reason, CompAir’s 2 stage oil-free models offer the highest standard of air purity and has been certified ISO 8573-1 Class Zero (2010) oil and silicone free.
Guaranteed efficiency is provided by the excellent high quality IE3 or IE4 electric motor, along with legal conformity, high reliability and operational safety. These are great benefits in addition to automated motor lubrication. These oil free rotary screw compressors utilise two efficient radial fans in accordance with ErP Efficiency Legislation 2015, offering low noise levels, low pressure loss and excellent cooling performance.
Robust Long-Life Airend Design
- UltraCoat protection – the most durable coating in the industry
- Precision machined gears
- Oversized bearings
- Stainless steel air seals
- Unique labyrinth oil seal design
- Stainless steel 2nd stage rotors
- Stainless steel, aluminium and treated piping on critical components
Advanced HPM Motors for RS Models
- Best-in-Class motor efficiency
- 30% or more energy savings compared to conventional compressor control
- Unlimited starts and stops
- Increased motor life and reliability
- Low maintenance cost
Features:
- Large 5.7’’ color display
- Intuitive web-like navigation
- Graphing and data acquisition of over 30 parameters
- Modbus interface for connection to BMS
- Integrated variable speed control
- Ethernet connection allows web enabled control through tablet, computer or mobile device
- iConn remote monitoring
- Direct RS485 connection for SmartAirLite, (SAM requires STD/VSD Module)