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Hitachi servo amplifier refurbishment & testing

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.

Hitachi Servo Amplifier Repair Services by Roc Industrial LLC

Is your Hitachi servo amplifier malfunctioning and disrupting your critical operations? Roc Industrial LLC specializes in providing fast, reliable, and expert Hitachi servo amplifier repair services. We understand the importance of minimizing downtime, and our experienced technicians are dedicated to getting your equipment back up and running quickly. We offer comprehensive repair solutions, from component-level troubleshooting to complete refurbishment, ensuring your Hitachi servo amplifiers perform like new. Trust Roc Industrial LLC as your trusted partner for all your Hitachi servo amplifier repair needs.



About Hitachi Servo Amplifiers

Hitachi is a globally recognized leader in industrial automation, and their servo amplifiers are integral components in a wide range of applications. Known for their precision, reliability, and advanced control capabilities, Hitachi servo amplifiers are commonly found in CNC machines, robotics, packaging equipment, and other automated systems. These amplifiers are designed to provide precise motor control, enabling accurate positioning and smooth operation. Hitachi has built a strong reputation for innovation and quality, making their servo amplifiers a preferred choice for demanding industrial environments.


Hitachi servo amplifiers are essential for maintaining the performance and efficiency of automated systems. They provide the necessary power and control signals to drive servo motors, ensuring accurate and responsive motion. With a focus on energy efficiency and advanced features, Hitachi servo amplifiers are designed to meet the evolving needs of modern manufacturing and automation. When these critical components fail, it's crucial to have a reliable repair service to minimize downtime and maintain productivity. Roc Industrial LLC offers expert Hitachi servo amplifier repair services to keep your operations running smoothly.



Supported Models & Series

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

  • Hitachi Servo Amplifier Series: MDS-A, MDS-B, MDS-C, MDS-D

  • Hitachi Servo Amplifier Models: MDS-A3-CV, MDS-A3-SPJ2, MDS-A3-V1, MDS-B-SVJ2, MDS-B-SPJ2, MDS-C1-V2, MDS-C1-CV, MDS-D-SVJ3

  • Hitachi Servo Drive Units: SVM Series, SMB Series, SMH Series

  • Hitachi Inverter Units: SJ Series, WJ Series

  • Hitachi Brushless AC Servo Amplifiers: All Series

  • Specific Model Examples: MDS-A3-CV-02, MDS-B-SVJ2-03, MDS-C1-V2-10


Common Hitachi Servo Amplifier Problems We Repair

Hitachi servo amplifiers, while robust, can experience failures due to various factors, including age, environmental conditions, and operational stress. Recognizing these common issues is the first step in getting your equipment back online. Here are some of the common Hitachi servo amplifier problems we repair:

  • No Output: The amplifier fails to provide power to the servo motor, resulting in complete system standstill.

  • Overvoltage Errors: The amplifier detects excessive voltage levels, triggering a fault and shutting down the system.

  • Communication Errors: The amplifier loses communication with the controller, preventing proper operation and control.

  • Overheating: The amplifier experiences excessive heat buildup, leading to performance degradation and potential component failure.

  • Blown Fuses: Internal fuses blow due to power surges or component failures, interrupting the power supply to the amplifier.

  • Encoder Faults: Issues with the encoder feedback signal, causing inaccurate positioning and control.

  • Drive Faults: General errors indicating internal problems within the servo drive circuitry.

  • Power Supply Failures: Problems with the internal power supply, resulting in unstable voltage levels and operational issues.

  • Current Overload: The amplifier detects excessive current draw, triggering a fault and protecting the system from damage.

  • Positioning Errors: Inaccurate positioning due to issues with the amplifier's control algorithms or feedback mechanisms.


Our Hitachi Servo Amplifier Repair Process

Roc Industrial LLC follows a meticulous and comprehensive repair process to ensure the highest quality Hitachi servo amplifier repairs. Our goal is to restore your equipment to optimal performance and reliability. Here's a detailed breakdown of our process:

  1. Free Evaluation and Quote: We begin with a free evaluation of your faulty Hitachi servo amplifier. Our experienced technicians carefully assess the condition of the unit and identify the root cause of the problem. Based on our findings, we provide a detailed quote for the repair, outlining the necessary steps and associated costs.

  2. Shipping Instructions: Once you approve the quote, we provide clear and concise shipping instructions to ensure your servo amplifier 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 Hitachi servo amplifier undergoes a thorough diagnosis using our state-of-the-art test equipment. We simulate real-world operating conditions to identify any hidden issues and ensure a comprehensive repair.

  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.

  5. Load Testing and Quality Checks: After the repair is complete, we conduct rigorous load testing to verify the performance of the servo amplifier under various operating conditions. We also perform thorough quality checks to ensure that all specifications are met and that the unit is functioning optimally.

  6. Warranty-Backed Return and Support: We stand behind our repairs with a comprehensive warranty. Your repaired Hitachi servo amplifier is carefully packaged and returned to you, along with detailed documentation of the repair process. Our dedicated customer support team is available to answer any questions and provide ongoing assistance.


Nationwide Repair Services

Roc Industrial LLC provides Hitachi servo amplifier repair services to customers nationwide. We understand that downtime can be costly, and we are committed to providing fast and reliable repairs, no matter where you are located. We serve customers in major metro areas, including New York, Los Angeles, Chicago, Houston, and Dallas, as well as smaller cities and rural areas across the country.


We offer fast shipping options and quick turnaround times to minimize disruption to your operations. Whether you need a routine repair or an emergency service, Roc Industrial LLC is here to help. Contact us today to learn more about our nationwide Hitachi servo amplifier repair services.



Why Choose Roc Industrial LLC?

When it comes to Hitachi servo amplifier repair, Roc Industrial LLC is the trusted choice for businesses across the country. Here are just a few reasons why you should choose us:

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

  • Warranty-Backed Repairs: We stand behind our repairs with a comprehensive warranty, giving you peace of mind and ensuring the quality of our work.

  • Thousands of Parts in Stock: We maintain a large inventory of Hitachi servo amplifier parts, allowing us to complete repairs quickly and efficiently.

  • Fast Turnaround, Often Same-Day: We understand the importance of minimizing downtime, and we offer fast turnaround times, often completing repairs on the same day.

  • ISO-Certified Repair Processes: Our repair processes are ISO-certified, ensuring the highest standards of quality and consistency.

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

Don't let a faulty Hitachi servo amplifier slow down your operations. Contact Roc Industrial LLC today for a free evaluation and fast, reliable Hitachi servo amplifier repair.

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