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.
Auxiliary air compressors
Wheel flange lubrication
Toilet evacuation systems and toilet door control
Signal horn activation
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 usedforseveralapplications.It provideshigh quality compressed airforsanding,flange lubrication, horn andtoiletdoor control.Tests, such aselectromagneticcompatibility according toEN50121-3-2, vibration and shock test according toEN61373, salt spray test etc., weresuccessfullycompleted.
Free air flow at 0 bar
Nominal Pressure PN
Noise level PN
L x B x H (mm)
with 3 phase AC-motor
* 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
auxiliary air applications
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
resistent to dirt
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
retrofit suitable (direct drive and belt drive)
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
starting at low temperatures
KTX (Hyundai Rotem)
Val 206 (Siemens)
Delivery rate at 9 bar
Nominal pressure PN
Sound pressure level at PN (@ 4,6 m)
L x B x H (mm)
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)