100 Oxford Street
Hull, HU2 0QP
Tel 01482 225691
Rewinding and Repairing Electric Motors, Fans, Pumps and Industrial Machinery in Hull and the Humber region since 1973
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Wave wound armature. Page 1/3
This is an armature from a 36 volt DC hydraulic drive motor from a fork lift truck. When it came in to us it was clear to see that it was burnt out. In this case there was no need to carry out any tests. There was evidence of excessive heat which has melted and burned the insulation. The insulating lacquer on the windings is rated at 180 degrees C so this armature must have been very hot indeed to have burnt out.
The armature is throuroughly examined and all the winding particulars and connection details are recorded. The windings are then heated to soften the varnish prior to the old windings being removed.
Once the old windings are removed the slot insulations are removed and the laminations are cleaned and painted using an anti-tracking paint. The commutator is cleaned of the old wires.
The commutator is then prepared for the new wires.
The armature slots are then insulated to form a barrier between the windings and the laminations.
After a few hours work the armature is ready to wind. Sometimes the coils are made on our winding machines but in this case everything is wound by hand.