Restoring Original Power: The Science Behind Crane Motor Repair

crane motor repair

American Electric Motors

4100 Davison Road
Burton, MI 48509

Phone: 810-743-6080
Fax: 810-743-6098

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Motor Repairs:

Toll Free: 877-384-2967

In the robust world of construction and industrial operations, the efficiency and reliability of crane motors are non-negotiable. Over time, the relentless demands placed on these motors can lead to wear and tear, diminishing their original power and efficiency. However, recent studies and advancements in repair techniques have shown that rebuilding a crane motor is not just about bringing it back to life; it’s about restoring it to its original glory, ensuring years of reliable service. American Electric Motors is at the forefront of applying these findings to offer top-tier crane motor repair services.

The Importance of Expert Repair

The skepticism surrounding the repair and rewinding of electric motors, particularly those integral to crane operations, has long been a topic of debate within the industry. Concerns have primarily centered around the notion that such interventions might lead to a decrease in motor efficiency, potentially compromising the performance and energy consumption of these crucial machines. However, this perspective has been challenged and significantly shifted thanks to the rigorous research undertaken by leading industry bodies, the Electrical Apparatus Service Association (EASA) and the Association of Electrical and Mechanical Trades (AEMT).

The landmark study titled “Effect of Repair/Rewinding on Premium Efficiency/IE3 Motors” carried out in 2019, has played a pivotal role in reshaping industry standards and practices concerning motor repair. By employing a meticulous methodology and leveraging third-party testing laboratories, the study aimed to objectively assess the impacts of repair and rewinding processes on the efficiency of IE3 motors, which represent the benchmark in premium efficiency.

The findings of this comprehensive research have been illuminating, effectively dispelling the myths that had previously cast a shadow over the perceived viability of motor repair. Contrary to the notion that efficiency is invariably compromised post-repair, the study revealed that adherence to best practice repair procedures could not only preserve but, in certain cases, even enhance motor efficiency. This revelation is significant, underscoring the importance of skilled repair work and the application of standardized practices in maintaining the operational integrity and efficiency of repaired motors.

The implications of these findings extend far beyond the technical realm, offering reassurance to stakeholders across various sectors reliant on electric motors for their operations. By establishing a solid foundation of evidence-based practices for motor repair, EASA and AEMT have provided a blueprint for the industry to follow—a pathway that ensures repaired motors can continue to operate at or above their original performance standards. This not only bolsters the operational efficiency and sustainability of motor-driven systems but also aligns with broader environmental objectives by optimizing energy use and reducing waste.

In essence, the “Effect of Repair/Rewinding on Premium Efficiency/IE3 Motors” study serves as a cornerstone for the industry, advocating for the continued evolution and refinement of motor repair techniques. As the industry moves forward, the insights garnered from this research will undoubtedly continue to influence practices, policies, and perceptions regarding the repair and maintenance of electric motors, ensuring they remain a reliable and efficient component of industrial machinery and systems.

Insights from the Study

The 2019 study, conducted by the Electrical Apparatus Service Association (EASA) and the Association of Electrical and Mechanical Trades (AEMT), is a testament to the advancements in motor repair technology and methodologies. Building upon the groundbreaking work of the 2003 research, this newer study meticulously explores the effects of repair and rewinding on the efficiency of Premium Efficiency/IE3 motors, which are increasingly becoming the norm in response to global energy efficiency mandates.

This research underscores the importance of adhering to good practice procedures during the stator rewinding process. By following these carefully outlined standards, the study demonstrates that it is possible to not only preserve but in some cases even enhance the efficiency of these high-performance motors. The precision in repair procedures, as highlighted by the study, plays a crucial role in achieving outcomes that align closely with the original manufacturing specifications, with efficiency changes falling within the stringent test accuracy of ±0.2%.

Such findings are particularly relevant in the current era, where the shift towards premium efficiency motors is driven by regulatory mandates aimed at reducing energy consumption and minimizing environmental impact. The study’s conclusions provide a solid foundation for repair services, like those offered by American Electric Motors, to ensure that repaired motors meet the high standards expected in today’s market. This not only helps in maintaining operational efficiency but also supports broader environmental goals by ensuring that repaired motors contribute to energy savings and sustainability objectives.

The implications of this study are far-reaching, offering a blueprint for repair practices that can maintain and even improve the efficiency of premium efficiency motors. This is a significant consideration for industries reliant on electric motors, as it assures that opting for repairs—a more sustainable and cost-effective option than replacement—does not compromise on performance or efficiency.

For industries looking to navigate the complexities of maintaining compliance with energy efficiency mandates while ensuring the longevity and reliability of their motor-driven equipment, the findings of the 2019 study serve as a crucial resource. It reinforces the message that with the right knowledge and techniques, the repair and rewinding of electric motors can be conducted in a manner that aligns with the best interests of both businesses and the environment.

Read the EASA 2019 Study

American Electric Motors: Applying Research to Practice

At American Electric Motors, we leverage these insights to ensure that our crane motor repair services meet and exceed industry standards. Our technicians are trained in the latest techniques and follow the best practices outlined by EASA and AEMT, guaranteeing that every motor we repair delivers optimal performance and reliability.

Our Repair Process

  1. Diagnosis and Disassembly: We begin by thoroughly inspecting the motor to identify the cause of failure and any areas of concern.
  2. Cleaning and Component Repair: All parts are meticulously cleaned, and any worn or damaged components are repaired or replaced.
  3. Rewinding and Reassembly: Following the guidelines for maintaining efficiency, we proceed with rewinding and carefully reassembling the motor.
  4. Testing and Quality Assurance: The repaired motor undergoes rigorous testing to ensure it meets original specifications for performance and efficiency.

Why Choose American Electric Motors?

Choosing American Electric Motors for your crane motor repair means trusting a partner who values your equipment’s performance and efficiency as much as you do. Our commitment to applying cutting-edge research and best practices ensures that your motors return to you in peak condition, ready to support your operations’ demands.


The restoration of crane motors to their original power is not only possible but a practice grounded in rigorous scientific research. By choosing a repair partner like American Electric Motors, who is committed to excellence and informed by the latest studies, you ensure that your crane motors are not just repaired but revitalized.

For more information on our crane motor repair services and how we can help you achieve operational excellence, contact us today.

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