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Oil-free Main Air Compressors - MC Series

Main air for rail vehicles

The MC series is a main air compressor series, specifically developed for the railway sector. It is based on our know-how and experience of more than 40 years of oil-free piston compressors. The MC series has a compact size and is low vibration/noise. It is an ideal solution for new or retrofit railway projects that have to withstand extreme conditions.

Advantages at a glance

  • Durable and easy to maintain
  • Low life cycle costs
  • Optimum dust and stone chip protection due to robust housing
  • Low noise emission thanks to special sound insulation
  • Reliable start-up even at very low temperatures
  • Developed and produced in Germany: Dürr Technik is your partner with many years of experience in the field of oil-free main and auxiliary air compressors for the railway sector


  • Operating temperature from -40°C to +55°C
  • Various installation positions of the units possible
  • Closed protective housing with customised sound insulation
  • IE3/E1 motors compatible with variable frequency drive

Customised compressed air systems

Main air compressors of the MC series are suitable for installation in a wide variety of vehicle types and can be custom-configured according to the installation situation. Both the dryer and the welding frame can be individually adapted to the respective vehicle type and installation situation.

VFD-capable IE3 or IE1 motors

The main air compressor is operated by a motor with continuous running capability.  The motor has been specifically developed for use in rail vehicles and is designed for operation with a frequency converter.

Withstands high vibrations for a lifetime

The main air compressors of the MC series are equipped with very robust wire rope vibration dampers. They protect the compressor and the vehicle from strong vibrations and ensure trouble-free operation. The vibration dampers are maintenance-free during the entire service life of the compressor.

Alternatively, other types of vibration dampers can be used where the situation requires. We would be happy to discuss this with you.

Oil-free means trouble-free & environmentally friendly

Oil-free compressors protect the environment by reducing the need for scarce raw material, such as oil. Through the compressor life we are also avoiding waste oil and oil filters.

  • No oil level checks and oil changes.
  • No costs for oil, filters and disposal of used oil.
  • No oil vapor that can impair system function.

Our compressors withstand extreme conditions

Each series undergoes extensive testing to ensure performance within technical limits and to meet the requirements of the railway industry. Additional tests can be realised according to your specific requirements.

Standards you can rely on

The compressor and related components are tested according to the following standards:

  • Resistant to dirt – IP resistance of the motor IP 65
  • Shock-resistant according to DIN EN 61373:2011-04
  • Fire and smoke compatible according to DIN EN 45545-2
  • Temperature tests according to IEC 60068-2
  • Electromagnetic compatibility according to DIN EN 50121-3-2: 2017-11

Technical Data

Delivery at 9 bar Nominal Pressure PN Sound pressure level at PN (@ 4.6 m) Motor power Weight Dimensions
  (l/min) (bar) dB(A) (kW) (kg) L x W x H (mm)
MC-700 720 10 60 7,5 200,0 1000x650x510
MC-900 920 10 67 9,5 200,0 1000x650x510
MC-1200 1220 10 69 15,8 285,0 1120x650x510

Data at 50 Hz, other voltages and frequencies available on request.
Data refer only to compressors without dryer and frame.

How can we help you?

Get in contact with us by e-mail or telephone.

+49 7142 90 22-0
United Kingdom
+44 1761 422944
United States of America
+1 516-214-5659
Contact person

Any questions?

I would like to help you

Wilhelm Sevens