Electric Motor Overhaul
Revitalize Your Equipment: Expert Repair Services for Optimal Performance and Longevity
Electric motor overhaul
In-house, Experience and knowledge.
EMRI Repair is specialized in electric motor overhauls. With more than 80 years of experience in the trade, a modern workshop and in house test facilities, your electric motor is in good hands. Moreover, we can achieve short turnaround times for rush jobs.
Standard Electric motor overhaul
- Incoming inspection of motor and measurements
- Dismantling of the motor
- Complete cleaning of all parts
- High-pressure cleaning of windings
- Impregnation and drying of windings
- Measuring and checking of windings
- Measuring and checking of bearing seating
- Cleaning of bearing house and bearing house covers
- Renewal of bearings (DE and NDE)
- Renewal of seals (DE)
- Assembling of the motor
- Check and tighten all connections
- Overhaul of connection box
- Perform electrical test
- Perform dynamic behaviour test
- Create test report
- Spray painting (outside)
- Prepare for shipment
Type specific explanation
DC electric motor overhaul
A DC motor transfers electricity with carbon brushes and a collector from the rotor to the exterior. The use of these parts has several consequences.
The carbon brushes and collector are subject to wear. The wearing of the carbon brushes produces particulate matter, which pollutes the inside of the motor. Removing this carbon dust requires extensive cleaning. Furthermore, the carbon brush brackets have to be checked and if needed aligned or replaced.
The friction induced by the carbon brushes on the collector and the heat generated during use can damage the collector. During a DC motor overhaul, the collector is measured to ensure it is within factory specifications. If it does not meet the specification, the collector is machined down. After machining, the grooves between individual lamellae of the collector are milled down.
Type specific explanation
AC motor overhaul with slip rings
The parts that need extra work on a slip ring motor are the slip rings themselves, the carbon brushes, the carbon brush bracket and the rotor windings. Because of the mechanical properties of a slip ring motor, the particulate matter is less severe than on a DC motor, but pollution is still clearly visible.
Every overhaul is closed off by an extensive test at our test field.
We can assure you that your machine is fully operational and ready for service.
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