Compressors for oil-free compressed air

Oil-free and trouble-free performance

For industries with stringent air quality requirements like chemical, pharmaceutical, or food and beverage, Kaeser offers a complete line of two-stage oil-free rotary screw air compressors. 

These units are designed to deliver a reliable source of oil-free air and follow Kaeser's core design principles:

  • Energy-efficient operation – Components selected for quality and for performance
  • Service-friendly design – Maximum accessibility and smart features to cut down on maintenance time
Have special requirements? Thanks to their advanced communications, our compressors can easily integrate into existing compressed air and control systems. Contact us for a custom solution that is tailored to your needs.

Take a closer look at our oil-free rotary screw air compressors



With air-cooling 50 to 450 hp

Oil-free rotary screw compressors with air-cooling.

Air-cooling – simply efficient

  • Flow rate: 116 to 1790 cfm
  • Pressure ranges from 60 to 145 psi
  • Ambient temperature: to 115°F
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With air-cooling 50 to 450 hp

With water-cooling 50 to 450 hp

Oil-free rotary screw compressors with water-cooling.

Water-cooling – compact and energy-efficient

  • Flow rate: 107 to 1790 cfm
  • Pressure: 60 to 145 psi
  • Ambient temperature: to 115°F
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With water-cooling 50 to 450 hp

With integrated compressed air dryer

Oil-free rotary screw compressors with integrated rotation dryer.

Integrated i.HOC rotation dryer

  • Flow rate: 107 to 1801 cfm

  • Pressure: 72 to 145 psi

  • Pressure dew point: -4°F to -40°F

Integrated refrigerated dryer

  • CSG Series

  • Pressure: 90 to 145 psi

  • Pressure dew point: to 37°F

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With integrated compressed air dryer

Portable oil-free compressors up to 1600 cfm - M500-2

The M500-2 compressed air giant for refineries and large industrial companies

The new compressed air giant: the M500-2 for refineries and large-scale industrial operations

  • With the innovative SIGMA CONTROL MOBIL controller
  • Highly effective deployed as a standalone unit or within an existing station
  • Maximum energy efficiency even after years of continuous use
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Portable oil-free compressors up to 1600 cfm - M500-2