AC & DC motor winding specialists — all done in-house
Electric Motor Rewinds
When a motor's windings fail, replacement isn't always necessary — and it's rarely the fastest or most cost-effective option. Mawdsleys BER provides expert electric motor rewinds for AC and DC motors of all sizes, with every stage of AC and DC motor winding carried out in-house at our Bristol workshop: no third-party winders, no unnecessary delays.
When it comes to quotations –
we are faster than 82% of the competition
because we know that downtime costs you money
Our electric motor rewinding process
- Assessment & diagnosis — a full inspection of the motor’s electrical and mechanical condition, including insulation resistance and surge testing, confirms whether a rewind is the right solution.
- Old winding removal — deteriorated windings are removed using controlled heating or mechanical stripping, protecting the stator or armature core throughout.
- Core/component testing — the core is cleaned and tested for damage, including checks for hot spots or shorted laminations.
- Rewinding — new windings are hand-wound to original (or improved) specification using high-grade enamelled copper.
- Impregnation & curing — windings are vacuum-impregnated with insulating varnish, then stoved and cured.
- Rebuild & test — the motor is reassembled with new bearings, seals and gaskets, dynamically balanced, and tested under load in our test facility
Our electric motor rewinding process
- Assessment & diagnosis — a full inspection of the motor’s electrical and mechanical condition, including insulation resistance and surge testing, confirms whether a rewind is the right solution.
- Old winding removal — deteriorated windings are removed using controlled heating or mechanical stripping, protecting the stator or armature core throughout.
- Core/component testing — the core is cleaned and tested for damage, including checks for hot spots or shorted laminations.
- Rewinding — new windings are hand-wound to original (or improved) specification using high-grade enamelled copper.
- Impregnation & curing — windings are vacuum-impregnated with insulating varnish, then stoved and cured.
- Rebuild & test — the motor is reassembled with new bearings, seals and gaskets, dynamically balanced, and tested under load in our test facility
Case Studies
Testimonials
See what our clients have to say
Business Marine Manager, Rotec Hydraulics
“The entire team a Mawdsleys offered and subsequently completed an exceptional service re an overhaul request from a DC armature unit . Throughout, communication was excellent and timelines where met.”
“Wouldn’t hesitate to return and completely recommend Mawdsleys BER”
Admiral Harding International Shipping Contractors
“Admiral Harding Ltd have used Mawdsleys as a sub contractor for many years. They have always given our company great attention to detail, a good, reliable service in providing fast turn-around of repairable items such as motor overhauls and rewinds, supply of new items and they continue to offer their support and advice on all relative matters when asked.”
This is why
1. Speed of service
Reducing your downtime is our main priority. That’s why, from the moment you call to the final report, we move fast. No delays. Just results.
2. High-quality service
With over 100 years experience, we’ve built a reputation on precision, excellence, and constant improvement. You expect the best—we deliver it.
3. One-stop shop
The vast experience of our staff, combined with our state-of-the-art workshop, provide us with flexibility. We do not only repair – we manufacture.
4. ATEX motors specialists
Repairing all types of ATEX motors. We are an AEMT Ex Registered Repairer recognised for our quality systems and professional repair standards.