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Services
Induction Motor Rewinding & Repair
Complete rewinding, repair and testing of three-phase and single-phase induction motors, returned to service with documented electrical test results.
An industrial electric motor that fails without warning takes a production line with it. NEXORA operates a dedicated motor workshop that rewinds, repairs and tests induction motors of all frame sizes, restoring them to reliable service rather than forcing an unplanned replacement.
Every motor received is stripped, inspected and electrically tested before any work begins, so the root cause is identified — not just the symptom. Winding data is recorded before the old coils are removed, new windings are produced to the original or an improved specification, and the finished motor is tested and documented before it is released.
Motor Rewinding
Rewinding is carried out using correctly rated enamelled copper wire, matched slot insulation and class-appropriate varnish. Coils are formed, inserted, connected and lashed by experienced winders, then vacuum or dip impregnated and cured to give the winding mechanical strength and resistance to moisture, vibration and thermal cycling.
Diagnosis and Electrical Testing
Motors are tested for insulation resistance, winding continuity and balance, polarisation index and earth faults. Mechanical condition is assessed at the same time — bearing housings, shaft journals, fan and cooling paths, and terminal box integrity — because a large share of winding failures begin as mechanical or supply-side problems.
What We Deliver
- Rewinding of three-phase and single-phase induction motors
- Squirrel cage and slip ring motor repair
- Replacement of bearings, shafts, fans and terminal boxes
- Insulation resistance, continuity and balance testing
- Vacuum and dip impregnation with class F/H varnish
- Dynamic balancing of rotors and cooling fans
- Root-cause failure analysis with a written report
- Site inspection and motor troubleshooting
Key Capabilities
- Low-voltage induction motors across a wide range of frame sizes
- Motor rewinding to original or improved winding specification
- Shaft repair, sleeving and re-machining in-house
- Bearing housing repair and end-shield re-machining
- Terminal box and cable gland replacement
- Motor overhaul combined with control panel and drive checks
Our Process
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Receipt and inspection
The motor is logged, photographed and visually inspected; nameplate and winding data are recorded before disassembly.
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Electrical and mechanical testing
Insulation resistance, winding balance and earth continuity are measured, and the mechanical condition of bearings and shaft is assessed.
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Stripping and coil manufacture
Old windings are removed, the core is cleaned and checked, and new coils are wound to the recorded specification.
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Winding, impregnation and curing
Coils are inserted, connected and lashed, then impregnated and oven cured for mechanical and thermal strength.
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Assembly and final testing
The motor is reassembled with new bearings, run tested on no load, and released with documented test results.
Applications & Industries
Crusher plants and quarry equipment
Cement and aggregate production
Manufacturing and process plants
Water pumping and irrigation stations
Material handling and conveyor drives
HVAC and industrial ventilation systems
Frequently Asked Questions
Turnaround depends on frame size, winding complexity and material availability. After inspection and testing we confirm a scope and a realistic completion date in writing before work starts.
Yes. Every motor is released with recorded insulation resistance, winding balance and no-load run test results, together with the winding data used.
Yes. Site inspection and electrical testing often identify supply, alignment or load problems that would cause a repaired motor to fail again.
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