This 3,000 horsepower, 4,000 volt, 900 RPM AC induction fan motor’s fabricated frame showed signs of fatigue and stress. The small movements allowed by a worn out frame structure can often lead to early winding failure and Babbitt bearing failure. Additional structural reinforcement was needed prior to replacing the windings and/or bearings. The photos show the installation of bracing, webbing, stringers, etc. to make a rigid structure that will adequately support the winding substructure and the Babbitt bearings. The devil is in the details, and improving the structural components creates a motor that will have a much longer life. CMT can handle all your electric motor repair needs at our shop or yours.
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