Mass Transit

Sherwood Electromotion Inc. (SEI) are experts in rail and mass transit propulsion systems’ equipment, and are a recognized leading provider of overhaul and supply services to North American Transit Authorities and Rolling Stock Manufacturers. Our extensive experience includes over 37 years of significant overhaul work on propulsion equipment for subways, streetcars, light rail vehicles, and rail-transit locomotives.

SEI’s competitive advantage is in our ability to respond quickly to customer needs and provide overhaul, manufacturing, and remanufacturing solutions for mass transit commuter rail propulsion equipment. SEI has the expertise and capabilities to make any required overhauls to traction motors, linear induction motors, generators, and auxiliary power units for the rail mass transit industry with a complete assurance of reliability.

SEI maintains the trust and respect of the transit authorities by providing reliable and cost-competitive overhaul and remanufacturing services for a wide range of mass transit propulsion system components. The extent of our capabilities means we can restore all mass transit commuter rail propulsion equipment and components.

SEI expertly overhauls the following transit propulsion system components:

  • ABB, GE, EMD ,Westinghouse, Stone Safety, Wabco
  • Bombardier, Alstom, Brush Traction, Krupp, Breda
  • Siemens,Adtranz,Mitsubishi,Hitachi
  • AC and DC Traction Motors
  • Motor-Alternator Sets
  • Generators
  • Blower-Motor Sets
  • Air Conditioning Motors
  • Linear Induction Motors
  • Track Brakes
  • Armatures
  • Rotors
  • Stators


SEI facilities are strategically located in Buffalo, New York and Toronto (Concord) Ontario, Canada providing our customers with timely service while meeting Buy America and Buy Canadian content requirements. To ensure that the highest standards are constantly being met in the delivery of all products and services, SEI maintains a stringent Quality Management System that is ISO and AAR certified.

SEI maintains a commitment to meet and exceed all customer requirements and expectations. All products and services supplied by SEI are supported by a comprehensive warranty policy.

paulMass Transit