Main generators and main alternators, including their companion units, are distinct power sources that supply electrical energy to locomotive propulsion system. Their functional reliability and operational durability are essential features that ensure uninterrupted supply of traction power to the passenger and freight trains.

Sherwood Electromotion Inc. (SEI) supplies remanufactured main generators and main alternators, delivers a complete range of generator and alternator services and provides an extensive selection of replacement parts and subassemblies for various types of generators and alternators.

Main Generator and Alternator Products

OEM Number



D25EMDMain Generator
5GMG195C1GEMain Alternator
AR10A2-D14EMDMain Alternator
AR12-D14EMDMain Alternator
AR20ABE-CA7AEMDMain Alternator
TA20-CA9EMDMain Alternator
5GT1503Y2GEMain Generator
5GT598B1GEMain Generator
5GT581C10GEMain Generator
5GT566H2GEMain Generator
5G552A1GEMain Generator

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Related Industries

SEI's Main Generators and Alternators' Scope of Supply

SEI's Scope of Supply offers a world-wide customer base the Optimal Choice and Value for main generators and alternators, 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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