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

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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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