Plasser American Acquires the Worldwide First Hybrid Rail Milling Machine

Plasser American Corp. Acquires the Worldwide First Hybrid Rail Milling Machine

  • Emission free rail treatment for North American Transit Systems

Robel Bahnbaumaschinen GmbH (Robel) and their partners Schweerbau International GmbH & Co. KG (SBI) and Vogel & Plötscher GmbH & Co. KG will deliver in summer 2022 a rail treatment system to Plasser American Corporation (PAC), headquartered in Chesapeake, Virginia.

Hybrid Rail Milling Machine
The new Romill CMS3e rail treatment system has specially been designed for tightest Metro tunnel clearances.


SBI specifically developed vehicle design, drive system and milling technology to meet the maintenance requirements of transit systems. The three piece machine consist does fit into tightest tunnel clearances in North America, as it fits into the tight tunnels of London Underground. The hybrid drive system consisting of a battery and a exhaust reduced Diesel range extender allows for truly emission free rail maintenance.

Romill CMS3e is equipped with the latest electric milling technology for the reprofiling of low quality track that so far could not be treated by rail milling. The spark and dust free rotational cutting process includes by-product collection on the train for recycling. In addition, a high performance polishing process is implemented to create a noise-optimised surface finish.