National Electric Motor Services

Medium & High Voltage Motor Repairs

Workshop overhaul and stator rewind for Large machines >1000V or form mold windings:

The National Electric Motor Services workshop prides itself on providing a comprehensive and meticulous overhaul service that caters to various motors, including large motors and generators. Our process involves thorough inspections, cleaning, drying, varnish and tropic-proof treatment, as well as expert reconditioning of all motor components and full electrical tests aiming to achieve the highest level of performance.

It’s important to highlight that our overhaul package is specifically tailored for large motors and generators that can be complex and critical components of industrial operations, making their proper functioning and longevity vital for business continuity.

Clients can rest assured that our expertise in handling large motors and generators allows us to provide industry-leading overhaul services, meeting stringent quality standards and contributing to the smooth operation of their critical machinery.

AC induction motor

  • Incoming static electric test and visual inspection
  • Dismantling of motor and inspection of all components
  • Provide incoming inspection report
  • Steam cleaning and bake dry of windings
  • Class H varnish treatment of windings
  • Steam cleaning and bake dry other components
  • Skimming of rotor slip rings for slip ring motor
  • Dynamic balancing of rotor G1.0
  • Reassembly of motor
  • Renew bearings
  • Renew or recondition sleeve bearings
  • Final static and free load running test of motor

     Optional Scope

  • Rewind stator winding back to original configuration
  • Renew winding accessories
  • Re sleeving of bearing housings to tolerance
  • Reclaiming bearing journals to tolerance
  • Local collection and delivery
  • Shrink wrap packaging if required
  • Transportation frame manufacture
Generator / Synchronous Motor

High Voltage Electric Motors

  • Incoming static electric test and visual inspection
  • Dismantling of motor and inspection of all components
  • Provide incoming inspection report
  • Steam cleaning and bake dry of windings
  • Class H varnish treatment of windings
  • Steam cleaning and bake dry other components
  • Skimming of rotor slip rings for slip ring motor
  • Dynamic balancing of rotor G1.0
  • Reassembly of generator
  • Renew bearings for non-sleeve bearing motors
  • Renew or recondition sleeve bearings for sleeve bearing motors
  • Final static and free load running test of generator for double bearing generators
  • Provide service report

   
  Optional Scope

  • Rewind stator winding back to original configuration
  • Renew winding accessories
  • Re sleeving of bearing housings to tolerance
  • Reclaiming bearing journals to tolerance
  • Local collection and delivery
  • Shrink wrap packaging if required
  • Transportation frame manufacture
DC motor

High Voltage DC Electric Motor

  • Incoming static electric test and visual inspection
  • Dismantling of motor and inspection of all components
  • Provide incoming inspection report
  • Steam cleaning and bake dry of windings
  • Class H varnish treatment of windings
  • Steam cleaning and bake dry other components
  • Recondition of commutator (skimming, undercutting and chamfering)
  • Dynamic balancing of armature G1.0
  • Reassembly of motor
  • Renew anti-friction bearings for non-sleeve bearing motors
  • Renew or recondition sleeve bearings for sleeve bearing motors
  • Final static and free load running test of motor
  • Provide service report

 
    Optional Scope

  • Rewind stator winding back to original configuration
  • Renew winding accessories
  • Re sleeving of bearing housings to tolerance
  • Reclaiming bearing journals to tolerance
  • Local collection and delivery
  • Shrink wrap packaging if required
  • Transportation frame manufacture

Brands that we service and repair

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