Sherwood Electromotion Inc. (SEI) supplies products and service solutions for the rail and locomotive industry.

An established expert in the field of locomotive propulsion technology, SEI is a trusted and valued partner to the Rail industry. For many years Sherwood has supplied propulsion systems equipment and associated services for locomotives manufactured by the prominent rail manufacturers such as GE, EMD, ALCO, Bombardier, MotivePower, Brookville Equipment, NRE and others.

From main generators and traction motors to switchgear and controls, SEI offers a comprehensive and diverse range of products and proven service solutions. At Sherwood Electromotion, we dedicate that our offerings exceed the expectations of fleet managers and procurement specialists of the Class I Railroads, Short-Line Railroads, Equipment Manufacturers, and other members of the Rail industry.

SEI's line of products and services for locomotive propulsion systems is represented by the following major groups and categories:


Main Generators
Main Alternators
DC Traction Motors
AC Traction Motors
Combo Units
Auxiliary Power Generators
Cooling Fan Assemblies
Blower Assemblies
Cab Heaters


Tests and Diagnostics
Fault and Root Cause Analysis
Performance Analysis and Improvement
Condition Based Repairs
Catastrophic Damage Repairs
Structured Overhauls
Bearing Replacement Programs
Rewind and Recoil Programs
Insulation Systems Improvements
Modifications, Upgrades and Conversions
Unit Exchange (UTEX) Options
New Equipment Assembly


Form & Random Wound Coils
Brush Holders
Cable Assemblies
Gears and Pinions
Wheel Sets
Replacement Parts

The reliability of the offered products, the quality of the supplied services and the timely delivery of all products and services are assured by the utilization of a dedicated Quality Management System (QMS). This comprehensive QMS is supported by the ISO 9001:2015 and AAR M-1003 corporate certifications.

Scope of Supply

SEI's Scope of Supply offers a world-wide customer base the Optimal Choice and Value for the rail industry, related Parts, and required Services.


SEI has dedicated engineering and manufacturing programs to ensure the availability of high quality parts and sub-assemblies.


SEI is proud to offer its customers a wide choice of standard and application specific services.

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