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Rebarring fabricated copper squirrel cage rotors: Steps, considerations and procedures to follow in the repair process

Publication date: 
March 2008
Tom Bishop, P.E., EASA Senior Technical Support Specialist
Type of media: 

Being accustomed to rewinding AC stators, we may not realize that there is an equivalent repair service that can be performed on some rotors - namely, rebarring. Our focus in this article will be the rebarring of fabricated copper squirrel cage rotors. Redesign of rotors is outside the scope of this article.

Fabricated rotors
Repair procedures and tips