An established expert in the field of locomotive propulsion technology, Sherwood Electromotion Inc. (SEI) is a trusted and valued partner to the Rail industry. For many years SEI has supplied propulsion systems equipment and associated services for locomotives manufactured by the prominent OEMs.

From main generators and traction motors to switchgear and controls, SEI offers a comprehensive and diverse range of products and proven service solutions that meet and exceed technical and budgetary 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.

• Equipment Components Services
• Main Generators Frames
• Tests and Diagnostics
• Main Alternators
• Stators
• Fault and Root Cause Analysis
• DC Traction Motors Armatures
• Performance Analysis and Improvement
• AC Traction Motors
• Rotors
• Condition Based Repairs
• Combo Units
• Form & Random Wound Coils
• Catastrophic Damage Repairs
• Auxiliary Power Generators
• Shafts
• Structured Overhauls
• Cooling Fan Assemblies
• Bearings
• Bearing Replacement Programs
• Blower Assemblies
• Brush Holders
• Rewind and Recoil Programs
• Compressors Cable Assemblies
• Insulation Systems Improvements
• Rectifiers
• Gears and Pinions Modifications, Upgrades and Conversions
• Starters Wheel Sets
• Unit Exchange (UTEX) Options
• Cab Heaters
• Replacement Parts
• New Equipment Assembly