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How To Maintain Your Electric Motor Post-Rewinding

How To Maintain Your Electric Motor Post-Rewinding

Rewinding an electric motor can rejuvenate its performance, restore its efficiency, and extend its operational life. However, to maximise the benefits of electric motor rewinds, it’s essential to implement a meticulous maintenance regimen post-rewinding. Proper maintenance not only ensures the motor continues to run smoothly but also helps prevent future breakdowns, thus saving costs on repairs and minimising downtime.

Here are some key practices to maintain your electric motor after it has undergone rewinding.

1. Regular inspection and cleaning

After the rewinding process, the first step in maintenance is to establish a routine inspection schedule. Regularly inspecting the motor helps in early detection of potential issues such as unusual noises, vibrations, or overheating. During inspections, clean the motor to remove dust, dirt, and other contaminants that can impede its performance. Use appropriate cleaning agents and tools to avoid damaging the motor components. Ensuring the motor remains clean can significantly improve its efficiency and lifespan.

2. Lubrication

Proper lubrication is crucial for the smooth operation of electric motors. Post-rewinding, ensure that all bearings and moving parts are adequately lubricated. Use the lubricant recommended by the manufacturer and adhere to the specified lubrication intervals. Over-lubrication or under-lubrication can both lead to mechanical failures, so it’s important to get it right. Regularly check the condition of the lubricant and replace it when necessary to maintain optimal performance.

3. Thermal management

Heat is one of the primary enemies of electric motors. After rewinding, monitor the motor’s temperature during operation. Overheating can indicate issues with the rewinding process or with other components. Ensure that the cooling system, whether it’s air or liquid-cooled, is functioning correctly. Clean or replace filters and fans regularly to maintain effective thermal management. Implementing these practices helps prevent thermal stress on the motor, thereby extending its operational life.

4. Vibration analysis

Post-rewinding, conducting regular vibration analysis is crucial. Excessive vibration can be a sign of imbalance, misalignment, or bearing wear. Use vibration analysis tools to monitor and record vibration levels. If any anomalies are detected, address them promptly to avoid further damage. Balancing and aligning the motor correctly after rewinding can also help in reducing vibrations.

5. Electrical testing

Regular electrical testing should be part of your maintenance routine. Tests such as insulation resistance testing, winding resistance measurement, and surge testing can help detect electrical issues before they lead to motor failure. Post-rewinding, these tests confirm the integrity of the new windings and ensure that the motor is operating correctly. Regular electrical testing helps in maintaining the efficiency and reliability of the motor.

6. Load monitoring

Monitoring the load on the motor is another essential aspect of maintenance. Ensure that the motor is not being subjected to loads beyond its capacity, as this can lead to overheating and damage to the windings. Use appropriate monitoring equipment to measure the load and adjust it if necessary. Maintaining the motor within its recommended load specifications helps in preventing undue stress and extending its lifespan.

7. Record keeping

Maintaining detailed records of all inspections, tests, and maintenance activities is vital. These records provide valuable insights into the motor’s performance and can help in diagnosing issues more efficiently. After rewinding, start a new logbook or update the existing one with all relevant details of the rewinding process and subsequent maintenance. Detailed records enable a proactive approach to maintenance, allowing for timely interventions and repairs.

8. Training and awareness

Ensure that all personnel involved in the operation and maintenance of the electric motor are adequately trained. They should be aware of the importance of the rewinding process and the specific maintenance practices required. Conduct regular training sessions to update the team on the latest maintenance techniques and tools. A well-trained team can significantly reduce the risk of motor failures and enhance overall operational efficiency.


Maintaining your electric motor post-rewinding is a multifaceted task that requires diligence and attention to detail. By following these maintenance practices, you can ensure that your motor operates efficiently and reliably for an extended period. Regular inspections, proper lubrication, thermal management, vibration analysis, electrical testing, load monitoring, record-keeping, and adequate training are all crucial components of an effective maintenance strategy.

MES offers extensive experience in electric motor rewinds and electric motor overhauling, ensuring that your equipment receives the best possible care and attention. With MES, you can be confident that your electric motors will remain in top condition, delivering optimal performance and longevity.