Locomotive Propulsion Systems Repair
Expert Locomotive Propulsion Systems for Reliable Performance
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:
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Locomotive Propulsion Systems Repair
Expert Locomotive Propulsion Systems for Reliable Performance
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:
Equipment
Our range of equipment and components is engineered to deliver top-notch performance and reliability for your operations. We specialize in maintaining, repairing, and enhancing critical machinery across various applications.
- Main Generators
- Main Alternators
- DC Traction Motors
- Improvement
- AC Traction Motors
- Combo Units
- Auxiliary Power Generators
- Cooling Fan Assemblies
- Blower Assemblies
- Compressors
- Rectifiers
- Starters
- Options
- Cab Heaters
Components
Our comprehensive range of components is designed to meet the highest industry standards, ensuring seamless operation and durability for your equipment. We provide expert services to maintain, repair, and replace essential components with precision and efficiency.
- Frames
- Stators
- Armatures
- Rotors
- Form & Random Wound Coils
- Shafts
- Bearings
- Brush Holders
- Cable Assemblies
- Gears and Pinions
- Wheel Sets
- Replacement Parts
Services
We offer a comprehensive suite of services tailored to optimize your equipment’s performance and reliability. Our skilled professionals utilize cutting-edge techniques to diagnose, repair, and enhance your systems efficiently and effectively.
- 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
Equipment
Our range of equipment and components is engineered to deliver top-notch performance and reliability for your operations. We specialize in maintaining, repairing, and enhancing critical machinery across various applications.
- Main Generators
- Main Alternators
- DC Traction Motors
- Improvement
- AC Traction Motors
- Combo Units
- Auxiliary Power Generators
- Cooling Fan Assemblies
- Blower Assemblies
- Compressors
- Rectifiers
- Starters
- Options
- Cab Heaters
Components
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- Frames
- Stators
- Armatures
- Rotors
- Form & Random Wound Coils
- Shafts
- Bearings
- Brush Holders
- Cable Assemblies
- Gears and Pinions
- Wheel Sets
- Replacement Parts
Services
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- 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
Restoring performance, one motor at a time.
Expert Overhauls for AC & DC Traction Motors
Restoring performance, one motor at a time.
SEI provides comprehensive overhaul services for AC and DC traction motors, ensuring optimal performance and reliability. We specialize in models from leading manufacturers, including:
GE Traction Motors: GE1519, GE731, GE752 series, GE761, GE764, GEB series, and more.
EMD “D Series” Traction Motors: D29CC, D87BTR, D100, 1TB2630, A3432, and others.
Our expertise, rigorous processes, and OEM-compliant standards ensure every motor operates at peak efficiency, meeting the demands of the rail industry.
Coil Manufacturing Expertise
Advanced Insulation Systems for High-Performance Coils
At SEI, we manufacture high-quality coils with proven insulation systems ranging from Class F (155ºC) to Class R (220ºC). Using trusted materials such as Kapton®, Mylar®, Nomex®, and Kevlar®, we provide solutions designed to accommodate high-voltage applications between 440 and 6,900 volts. Our advanced insulation processes, including Silicon VPI and Silicon Glass Vulcanized methods, guarantee durability and performance for even the most demanding applications.
Reliable performance through expert restoration.
Precision Overhauls for Combo Units and Wheel Sets
SEI specializes in overhauling combo units and wheel sets with “U” tubes, ensuring durability and efficiency. Our meticulous processes meet OEM standards, delivering reliable, cost-effective solutions for demanding rail operations.
What We Do
SEI specializes in the overhaul and manufacture of traction drive units and components. We offer contract manufacturing services to rolling stock manufacturers and Class I Railroads, ensuring they receive reliable and efficient solutions. Additionally, we supply both OEM and aftermarket parts and components to meet the diverse needs of the rail industry.
Engineering Excellence
Our Engineering Department provides essential technical support and advanced diagnostics, ensuring every product meets precise customer specifications. From tailored manufacturing processes to specialized tooling and detailed documentation, we deliver expertise at every stage.
Refurbishment and Remanufacturing
SEI specializes in refurbishing and remanufacturing components like EMD and GE traction motor armatures. Our integrated approach, from in-house coil manufacturing to rigorous OEM testing, ensures reliable, cost-effective solutions.
Quality Management System
SEI operates under a dedicated Quality Management System, ensuring the highest standards in every aspect of our operations. As an ISO 9001:2015 and AAR M-1003 certified company since 1991, we are committed to excellence. Safety is integral to our culture, with over a decade without a lost-time injury. We are also compliant with U.S. Federal Transit Administration (FTA) Drug & Alcohol Testing Requirements.
State-of-the-Art Facilities
For more than 40 years, SEI has earned the trust of its customers by delivering reliable, cost-effective, and timely solutions. Our one-stop service facility minimizes outsourcing, ensuring every component meets our rigorous quality standards and customer specifications. From production to testing, our processes are designed to guarantee performance and reliability.
Rail Products
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.
Would You Like Connect With Our Sales Team?
Sherwood Electromotion Inc. is dedicated to quality reliable service. Whether you’re looking for a specific part or product or searching for excellent service, our team is here to help. Feel free to give us a call or send us a note with any questions or concerns you may have.
