Sherwood Electromotion Inc. (SEI) supplies new and remanufactured rotors for all types of AC electrical machines, delivers a complete range of rotor services, and provides an extensive selection of replacement parts.

Rotors are a rotating component of the AC electrical rotating machine and a part of AC machine’s electromagnetic system. There are two types of rotors: squirrel cage and wound. The squirrel cage rotor consists of three major parts: steel shaft, steel laminated core, and a copper squirrel cage embedded in the core. The wound rotor has four major segments: steel shaft, steel laminated core, windings and slip rings. Rotors are designed as a part of a specific AC machine for operation with a designated stator.

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SEI's Rotor Scope of Supply

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