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Mitsubishi servo motor repair experts

ISO 9001:2015 Certified Quality

Our certified process ensures consistent quality and reliable repairs every time.

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2-Year Repair Warranty

We stand behind our repairs with an extensive 2-year warranty on parts and labor for your peace of mind.

Fast Turnaround Time

Our efficient process and large parts inventory help minimize your operational downtime.

Expert Component-Level Repair

We find and replace individual failed components, offering a more affordable and effective repair than full replacement.

Free, No-Obligation Quote

Send us your item for a free evaluation and receive a detailed repair quote with no commitment required.

Expert Mitsubishi Servo Motor Repair Services

Is your Mitsubishi servo motor malfunctioning and causing downtime? Roc Industrial LLC specializes in providing fast, reliable, and cost-effective Mitsubishi servo motor repair services. We understand the critical role these motors play in your industrial automation systems. Our experienced technicians are equipped to diagnose and repair a wide range of issues, ensuring your equipment is back up and running as quickly as possible. We pride ourselves on our expertise, speed, and commitment to quality, making Roc Industrial LLC your trusted partner for all your Mitsubishi servo motor repair needs.



About Mitsubishi Servo Motors

Mitsubishi Electric is a globally recognized leader in industrial automation, and their servo motors are renowned for their precision, reliability, and performance. Used extensively in CNC machines, robotics, and various automation applications, Mitsubishi servo motors are designed to deliver accurate and responsive motion control. These motors are integral to maintaining productivity and efficiency in demanding industrial environments. The Mitsubishi servo motor product line includes a diverse range of models, each engineered to meet specific application requirements, from high-speed positioning to heavy-duty torque control.


Mitsubishi servo motors are a staple in industries requiring precise motion control, including manufacturing, packaging, and robotics. Their reputation for durability and accuracy has made them a preferred choice for engineers and technicians worldwide. However, even the most robust servo motors can experience failures over time due to wear and tear, environmental factors, or electrical issues. When a Mitsubishi servo motor fails, it's crucial to have access to a reliable repair service that can quickly diagnose the problem and restore the motor to its original performance specifications. Roc Industrial LLC offers comprehensive repair solutions for Mitsubishi servo motors, ensuring minimal downtime and maximum productivity for our clients.



Supported Models & Series

We repair a wide range of Mitsubishi servo motor models and series, including but not limited to:

  • MR-J2S Series

  • MR-J3 Series

  • MR-J4 Series

  • HF Series (HF-KP, HF-SP, HF-JP)

  • LM Series (Linear Servo Motors)

  • HG Series (HG-KR, HG-MR, HG-SR)

  • RD Series (Direct Drive Motors)

  • OSA Series (Servo Amplifiers)

  • Various legacy models (contact us for specific model support)


Common Mitsubishi Servo Motor Problems We Repair

Mitsubishi servo motors are known for their reliability, but like all industrial equipment, they can experience failures. We understand the frustration and downtime that a malfunctioning servo motor can cause. Here are some of the most common issues we address:

  • No Output or Weak Torque: The motor fails to generate sufficient torque or doesn't respond to commands.

  • Overheating: Excessive heat buildup can damage the motor's internal components.

  • Communication Errors: Problems with the communication interface between the servo drive and the motor.

  • Encoder Faults: Issues with the encoder, leading to inaccurate positioning or speed control.

  • Blown Fuses: Indicates a short circuit or overload within the motor or drive.

  • Excessive Vibration or Noise: Unusual vibrations or noises during operation can signal mechanical issues.

  • Positioning Errors: Inaccurate or inconsistent positioning performance.

  • Brake Malfunctions: Problems with the motor's brake system, preventing proper stopping or holding.

  • Power Supply Issues: Failures in the power supply unit affecting motor performance.

  • Drive Errors: Error codes displayed on the servo drive indicating a fault within the motor or drive system.

  • Contamination: Ingress of contaminants such as dust, oil, or coolant, leading to component degradation.

  • Winding Failures: Shorted or open windings within the motor stator.


Our Mitsubishi Servo Motor Repair Process

At Roc Industrial LLC, we follow a meticulous repair process to ensure the highest quality and reliability of our Mitsubishi servo motor repairs. Our process is designed to quickly identify the root cause of the problem and implement effective solutions to restore your motor to optimal performance.

  1. Free Evaluation and Quote: We start with a free, no-obligation evaluation of your Mitsubishi servo motor. Our technicians carefully inspect the motor to identify the source of the problem. Based on our findings, we provide a detailed quote outlining the necessary repairs and associated costs.

  2. Shipping Instructions: Once you approve the quote, we provide clear and concise shipping instructions to ensure your motor arrives safely at our repair facility. We can also arrange for expedited shipping if needed to minimize downtime.

  3. Diagnosis Using Specialized Test Equipment: Upon arrival, your Mitsubishi servo motor undergoes a thorough diagnostic process using our state-of-the-art test equipment. We simulate real-world operating conditions to accurately identify all faults and potential issues. This includes testing the encoder, windings, brake, and other critical components.

  4. Component-Level Repair and Replacement: Our skilled technicians perform component-level repairs, replacing faulty components with high-quality replacements. We source our parts from trusted suppliers to ensure the longevity and reliability of our repairs. We address issues such as winding failures, encoder problems, brake malfunctions, and communication errors.

  5. Load Testing and Quality Checks: After the repairs are completed, we subject the Mitsubishi servo motor to rigorous load testing to verify its performance under various operating conditions. We monitor parameters such as torque, speed, and temperature to ensure it meets or exceeds original specifications. Our quality control team performs a final inspection to ensure the repair meets our stringent standards.

  6. Warranty-Backed Return and Support: We stand behind our work with a comprehensive warranty on all Mitsubishi servo motor repairs. If you experience any issues after the repair, simply contact us, and we will promptly address your concerns. We also provide ongoing technical support to help you maintain the optimal performance of your servo motor.


Nationwide Repair Services

Roc Industrial LLC provides Mitsubishi servo motor repair services to customers nationwide. We understand that downtime can be costly, which is why we offer fast turnaround times and reliable shipping options to minimize disruptions to your operations. Whether you're located in New York, Los Angeles, Chicago, Houston, Dallas, or any other city across the United States, we're here to help.


We offer expedited shipping options to ensure your Mitsubishi servo motor arrives at our facility quickly and safely. Our team works diligently to diagnose and repair your motor as efficiently as possible, minimizing downtime and getting your equipment back up and running. We understand the urgency of your repair needs and are committed to providing prompt and reliable service, no matter where you are located.



Why Choose Roc Industrial LLC?

When it comes to Mitsubishi servo motor repair, Roc Industrial LLC is the clear choice. We offer a unique combination of experience, expertise, and customer service that sets us apart from the competition.

  • 30+ Years of Experience: With over three decades of experience in industrial electronics repair, we have the knowledge and skills to handle even the most complex Mitsubishi servo motor repairs.

  • Warranty-Backed Repairs: We stand behind our work with a comprehensive warranty, giving you peace of mind knowing that your repair is protected.

  • Thousands of Parts in Stock: Our extensive inventory of spare parts allows us to quickly complete repairs and minimize downtime.

  • Fast Turnaround, Often Same-Day: We understand the urgency of your repair needs and strive to provide the fastest possible turnaround times, often completing repairs the same day.

  • ISO-Certified Repair Processes: Our ISO-certified repair processes ensure the highest quality and consistency in our work.

  • Exceptional Customer Support: Our dedicated customer support team is available to answer your questions and provide assistance throughout the repair process.

Don't let a faulty Mitsubishi servo motor slow down your operations. Contact Roc Industrial LLC today for a free evaluation and fast, reliable repair. We are your trusted partner for all your Mitsubishi servo motor repair needs, providing expert service and support to keep your equipment running smoothly. We also offer Mitsubishi servo motor troubleshooting, testing, and refurbishment services. Roc Industrial LLC is committed to providing the best possible service to our customers.

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