Fan wheel solutions for railroad applications and cooling

When it comes to railroad applications, a fan impeller has to meet very high requirements. The objectives are a long service life, traceability of all production steps including test certificates of all materials used, and meeting the special strength requirements of this application. Therefore, we have initiated a separate rail process and a special RW wheel model. These wheel models are strictly separated from wheels for general ventilation applications.

Some technical characteristics of the punker rail process:

  • Conformity to the technical specifications (TSP) of the end user
  • Welding in accordance with DIN EN 15085-2 (certification stage CL2); all weld seams continually welded
  • Coated carbon steel, coated according to corrosion class C4 acc. to DIN 12944 (RAL 9005)
  • Batch traceability of the material with 3.1 report card
  • Operating temperature range from -40°F – 180°F (-40°C to +80°C)
  • Standard construction for 1,000,000 load changes (2-pole drive / 50Hz).
  • Information about 60Hz-applications is available upon request.
  • Performance curves measured with restriction, square box housing with wheel to box ratio of BD=1.5xD2 and BD=1.8xD2 (un-housed operating condition) in a rectangular shape around the impeller (see datasheet 2.8.000-2.01), measured at air density of 0.075 lbs/ft³
  • Balance quality G6.3 per ISO 1940-1

Impeller recommendations for this industry:

  • Backward-curved wheel in a plenum without housing
    rail (formerly RW63D)


  • Cooling of transformers
  • Cooling of any rail systems
  • Cooling of drive motors
  • Cooling of electrical cabinets
  • Cooling of brake force transformers
  • Use in above- and sub-floor HVAC-systems
  • HVAC-systems

Need additional support or can’t find the right impeller?

Just contact us. We are sure to have a solution for you in our expanded product offering and can assist you further!