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Reliability is our strength

From auxiliary air to main air – oil-free compressors for rail traffic vehicles

Dürr Technik is a specialist in oil-free and maintenance-free piston compressors with a high life cycle. Particularly in rail traffic, it is important that the products meet the highest standards of reliability and durability . For this reason, manufacturers and operators of rail traffic vehicles as well as system suppliers have been relying on our high quality, compact custom solutions for many years.

Every train has its characteristics with individual demands. Therefore we develop together with our customers the optimal solution and manufacture customized systems.

Dürr Technik have extended their delivery programme by the products of the French company ATS Environement through the acquisition of their assets. ATS developed, among other things, the first oil-free main air compressors for high-speed trains and have 15 years' experience in the sector of main air. This experience, combined with 25 years experience in the auxiliary air sector, makes Dürr Technik a competent contact partner for auxiliary air compressors and main air compressors.

Please select:

Auxiliary air compressors


  • Pantograph
  • Railroad sanding
  • Wheel flange lubrication
  • Toilet evacuation systems and toilet door control
  • Signal horn activation
  • Spring-operated brakes
  • Support of the compensating air for service vehicles
  • Receiver systems for sand filling


  • Oil-free
    There is no need for checking the oil level and changing oil. The costs for fi lter and disposal of waste oil can be saved. Maintenance is virtually unnecessary. Functions are not impaired by oil vapours.
  • Low LCC
    The high quality materials used, ensure minimum amount of wear and therefore is a guarantee for an extremely long lifespan of the components and a very little demand for spare parts.
  • Innovative motor concepts
    Customized especially for railway application.
  • Low noise level
  • Extremely reliable
    Oversized components and keeping the tightest tolerances are major aspects of our design. These are tested and verified under the harshest conditions.
  • Compact
    Among other things by eliminating condensate collection tank and oil filter.
  • Since 2009 Dürr Technik has been certified according to IRIS


Examples of exclusive product solutions for customers

1. Supplying individual system solutions

For raising the pantograph, we manufacture complete
auxiliary air compressor systems as one package, customized
to meet the individual customer requirements.

2. Multi-functional auxiliary air compressor systems

This system is used for several applications. It provides high quality compressed air for sanding, flange lubrication, horn and toilet door control. Tests, such as electromagnetic compatibility according to EN50121-3-2, vibration and shock test according to EN61373, salt spray test etc., were successfully completed.

Technical data

Free air
flow at
0 bar
Rating Data Weight Dimensions
  (l/min) (bar) dB(A) IP P1 (W) (A) (V) (kg) L x B x H (mm)
with DC-motor                
D-030 30 7 61 00 122 6,4 24 DC 4,4 209x108x156
D-040 40 7 61 00 192 9 24 DC 6,0 242x121x175
D-061 61 7 69 54 500 21 24 DC 6,9 245x133x190
D-061 61 7 69 54 400 3,7 110 DC 6,9 245x133x190
D-100 100 8 68 54 630 26 24 DC 20,5 368x176x292
D-100 100 8 68 54 620 9,6 72 DC 20,5 368x176x292
D-100 100 8 68 54 715 6,5 110 DC 20,5 368x176x292
DG-160 160 7 72 56 910 38 24 DC 17,0 366x276x190
with 3 phase AC-motor                
B-061 61 7 66 54 500 0,9 400 7,0 230x175x180
B-065 65 7 68 54 560 1,1 400 14,4 305x188x218
BG-132 130 7 71 54 890 2,0 230/400 18,0 322x276x190
B-160 160 10 72 54 1400 3,1 400 26,0 423x350x300
B-304 295 10 77 54 2200 4,4 400 47,0 620x350x315

* other voltages on request


  • Ambient temperature range from -50°C up to +70°C (application specific solutions available on request)
  • Customized solutions provided for mounting the compressor where space is specifi ed or available, for added flexibility
  • Compressor systems can be fi tted with adsorption or membrane dryers
  • Modular system solutions include systems designed with and without enclosure


Main air compressors



  • brake air
  • spring system
  • auxiliary air applications


Model ranges

  • The RC range has been in use for 15 years and SNCF certified since 2006. This range includes the first oil-free compressor for main air demand in the rail traffic market all over the world. Due to their modularity the models are adjustable to all conventional motors and thereby ideally suited for retrofit. Belt drive as well as direct drive are therefore possible.
  • The MC range is newly developed – based on the know-how and the experience in the sector oil-free main and auxiliary air compressors. The range is characterized by its compactness and therefore an ideal solution for new projects.




  • Oil-free means trouble-free
    Neither an oil level check nor an oil exchange are necessary. The costs for oil, filters and the disposal of used oil can be saved. The expenditure for maintenance is significantly reduced. Functions are not affected by oil vapours.
  • Oil-free means environment-friendly
    Oil-free compressors protect the environment by saving the scarce energy source oil as well as avoiding oil waste and oil filter waste.



  • reduced energy consumption
  • innovative motor concepts of low-friction construction – specifically tailored to rail trafficlow life-cycle costs – the use of high-quality materials ensures minimal wear and thus guarantees an above-average high life expectancy of the components and a very low demand for spare parts.


Reliable and durable

  • robust
  • resistent to dirt
  • shock-resistant

A generous design of the components, which are tested under extreme conditions, i.e. comprehensive tests in the climate chamber in order to meet our high quality demands even in continuous running.



  • low noise levels
  • low vibrations – minimized by special vibration dampers and spring elements
  • maintenance friendly – intervals for maintenance are considerably extended by the use of oil-free compressors. Costs and time expenditure are reduced.


Specific advantages of the RC ranges

  • modular
  • endurance tested
  • retrofit suitable (direct drive and belt drive)
  • SNCF-certified


Specific advantages of the MC-range

To save space, MC models are integrated into a soundproof housing and are very compact and silent

  • housing as dust protection and stone chip protection
  • soundproof housing
  • starting at low temperatures



  1. TGV (Alstom)
  2. KTX (Hyundai Rotem)
  3. Z150/Z850 (Stadler)
  4. Val 206 (Siemens)


Technical data

Delivery rate at 9 bar Nominal pressure
Sound pressure level at PN (@ 4,6 m) Mechanical power Weight Dimensions
  (l/min) (bar) dB(A) (kW) (kg) L x B x H (mm)
Main air
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 11,0 250,0 1089x650x510
RC-800* 835 9 - - 117,0 500x713x680
RC-1000* 1000 9 - - 127,0 520x740x630

Data at 50 Hz, further voltages and frequencies available on request

* without motor, with direct coupling, available also with belt drive and with motor


  • operational from -50°C to +60°C (depending on type)
  • various installation of aggregates possible
  • system solutions with housing
  • soundproofing
  • FU-enabled motors







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