Induction heating for electrotechnical manufacturingÂ
Induction heating is used throughout the manufacture and maintenance of motors, generators, transformers and turbines. Its accuracy, repeatability and contactless operation make it well suited to both high-volume production brazing and precision maintenance work on rotating electrical equipment.Â
Why induction heating for electrotechnical manufacturing
- Delivers precise, localised heat without an open flame — important when working near windings and insulation
- Fully repeatable heating cycles, critical for parts that must meet tight electrical and mechanical tolerances
- Scales from manual bench tools to fully automated robotic production cells
Applications in motor, generator and transformer production
- Brazing of bars, strands, rings and wires used in motor, generator and transformer windings
- Brazing of short-circuit rings on rotor assemblies, including for large power-generation equipment manufacturers
- Brazing of pole windings in electric motors
- Brazing of generator windings
- Shrink-fitting of rotors on shafts, turbogenerator end caps and motor and stator housings, available as manual, semi-automated (manual load and unload) or fully automated robotic systems, sized for any motor or pump housing
- Hardening of electric motor shafts
- Pre-heating to burn varnish off strands and wires before cleaning
Bolt heating for power plant maintenance
Electrical switching components
-  Brazing of switchgear (low voltage), contact breakers (high voltage) and contactors  Â
Related products
Minac®: Mobile induction heating equipment
Minac is our family of mobile induction heating equipment for brazing, curing, hardening, shrink-fitting and straightening, in the workshop or on site
Ventac: Air-cooled induction heating system
Ventac is our portable air-cooled induction heating system that combines high continuous output with small size and low weight
Sinac®: Stationary induction heating systems
Sinac is our family of stationary, universal heat generator systems, customised with coils, cables and cooling to fit your heating process
Induction brazing machines
Turnkey induction brazing machines, pre-assembled and ready to work. Choose automatic, semi-automatic or manual operation to suit your production
Induction heating system for bolt expansion
A small, mobile Minac converter with handheld tools and coils for different bolt sizes. Fast, repeatable bolt heating that is as easy to use as an electric drill
Induction heating coils
Conventional, machined, 3D printed or hybrid coils, customised to your application and documented so we can always produce an identical one
Related applications
Induction brazing
Clean, repeatable joins in bars, strands, rings and wires for motors, generators and transformers, including short-circuit rings, pole windings and switchgear, with localised heat that minimises distortion and oxidation.
Induction shrink-fitting
Precise assembly of rotors on shafts, turbogenerator end caps and motor and stator housings of any size, in manual, semi-automated or fully automated robotic systems, with controlled heat that avoids mechanical stress.
Induction bolt heating
Fast, flame-free bolt expansion for opening turbine casings at power stations, oil and gas plants and chemical plants, using a mobile system with a coil inserted into the bolt.
Frequently asked questions
Image gallery
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Induction brazing of generator windings
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Brazing of a copper tube to an aluminium heat exchanger. Note the automatic filler material feeder
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Induction brazing of compressor parts
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A contactor being induction brazed
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Induction brazing of pole windings
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Induction brazing of bars, strands, rings and wires
Ideal for motor, generator and transformer components. This photo shows brazing of strands.
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Induction brazing of short-circuit rings
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A stationary coil during brazing of a short-circuit ring for one of the world’s leading power generation equipment companies
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The use of induction heating for bolt expansion in high-pressure turbines is a powerful business tool.
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Induction heating is a time and labour-saving alternative to inefficient flame and resistance heating for oil and gas processing plants, chemical plants and power stations.
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An operator inserts a specially designed induction coil into the bolt.
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The end result of a quick and safe induction bolt heating: An exposed turbine is ready for maintenance.
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The innovative ENRX shrink-fitting system can heat any size of motor housing for electrical motors and pumps.
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Shrink-fitting with flexible cable
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Manual solution for shrink-fitting of motor housing
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Motor housing: A fully automated system with robot handling.
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Motor housing: A semi-automated system with manual loading and unloading.
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ENRX has delivered numerous solutions for shrink-fitting of stator housings.
