ICHS EM CHP Dn Reconditioning of defective rotor of 610KW HT motor released from conveyor 9 in ICHS by providing new end rings and rotor bars

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Dismantling the motor, threading out the rotor from the stator, removing the both side end rings by machining in lathe, debrazing of copper bars from end rings and fabrication of new end rings, removing all the damaged bars from the rotor slots by special tools and fixtures, removing the both side core locking end plates by machining the lathe, removing all the rotor core stampings, machining the worn-out shaft core seating area to remove the eccentricity in lathe, machining the shaft core seating area to suit the rotor core ID with correct tight fit in lathe, Cleaning all the rotor core lamination, Varnishing including baking in oven, re-stacked the Varnished rotor stampings into the rotor shaft and locking the stacked cores firmly with new end plates with hydraulic press, machining the worn out area of the bearing housing, fabrication and fixing of new sleeve in the bearing housing and necessary locking arrangements, machining the bearing housing and to suit the bearing, dynamic balancing the rotor, Assembling the motor completely, threading in the Rotor to stator, transporting the motor from NCTPS to work-spot and transporting the motor back to NCTPS-I. Material: Bearings NU 330(DE) and 6330 (NDE) are under contractor’s scope.

A.R.C.ENGINEERING