Servo Motor Rewinding
The stator winding is the heart of a servo motor. When the winding burns or short-circuits due to overheating, voltage spikes or fluid ingress, the motor loses torque, overheats and the drive faults. We do not release a motor from our lab until the winding regains its original magnetic values.
Winding Fault Symptoms
- Rapid overheating of the motor
- Overcurrent or earth fault on the drive
- Power and torque loss
- Burnt insulation smell
- Low megger (insulation) value
Our Rewinding Process
We strip the old winding, clean the stator core and rewind it to original turn and cross-section values with Class-H (180°C) insulated copper wire. We then saturate the winding with varnish using VPI (Vacuum Pressure Impregnation) and cure it in industrial ovens. Finally we verify insulation with megger and short-circuit tests and deliver the motor under warranty after dynamic balancing. See our services.
Why Rewind?
Industrial servo motors are costly and many are no longer available. Rewinding to original values restores full performance at a fraction of full-replacement cost.
Frequently Asked Questions
Should I repair a burnt-winding motor or buy a new one?
In most cases rewinding is cheaper and the only option for obsolete motors. We advise the best choice after inspecting the motor.
What is a megger (insulation) test?
It measures the integrity of the winding insulation. A low megger value indicates leakage to ground and the need for rewinding.
How is the original value restored?
After rewinding, VPI and curing, the motor passes megger and short-circuit tests; we offer expedited service for critical stoppages.
Is there a warranty after rewinding?
Yes. Every motor is delivered under warranty after insulation and electrical testing.