DC Electric Motor Repair Services

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We’ve Been Servicing the Industrial World Since 1983.

Minimize Your Downtime. Maximize Your Productivity.

Call Toll Free: 1.877.625.2402

Precision Electric has hundreds of years combined experience in DC electric motor repair, including armature and field frame rewinds. We service a wide variety of industrial customers and also provide services to other motor repair centers across the midwest.

DC motors introduce additional complexities into the repair process. The addition of a commutator with brushes, and rotating armature coils subjected to centrifugal force, which aren’t factors involved in typical AC electric motor repair.

The following procedures and tests are used at Precision Electric to ensure top-quality DC machine repair:

  • Conductive carbon dust left by worn brushes is cleaned from the armature; then each commutator is checked for grounds and bar-to-bar shorts with detailed electrical testing.
  • Technicians repair most commutator problems in-house. For severely damaged or non-repairable commutators, we outsource for fast delivery of custom manufactured replacements.

  • Coils are manufactured in-house to assure proper fit. This eliminates constant bending and shaping during installation which can damage coil insulation.
  • Proper banding is critical in DC repair. This ensures that windings are held in position during high-speed operation.
  • Field coils are checked using voltage drop testing. Bad fields and interpoles are rewound in our shop on custom forms.

  • TIG welding is available to eliminate soldered joints where design dictates.
  • All commutators at Precision Electric are turned, undercut, and chamfered to provide the best possible surface for brush contact.
  • For corrosive or other severe duty environments, commutator platinum plating is available to extend wear life (pickle-duty).
  • Neutral setting adjustments are made during final machine testing to insure proper operation.

 

The Precision Electric in-service warranty is another advantage we have over our competitors. We encourage customers to have all spares rebuilt and ready for immediate replacement; this is to ensure maximum production with little to no downtime. Our in-service warranty begins the same day our customers install equipment rebuilt by Precision Electric, and ends 12 months later.

 

If you have any questions or you need additional information, email or call me direct.

Ryan Chamberlin
Inside Sales, Customer Support
[email protected]