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Hitachi resolver diagnostics specialists

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 Resolver Repair Services by Roc Industrial LLC

Is your Hitachi resolver malfunctioning and causing downtime? Roc Industrial LLC specializes in providing fast, reliable, and expert Hitachi resolver repair services to keep your critical equipment running smoothly. We understand the importance of minimizing downtime, and our experienced technicians are equipped to diagnose and repair a wide range of Hitachi resolver issues. Trust Roc Industrial LLC for all your Hitachi resolver service needs, offering unparalleled expertise and a commitment to quality.



About Hitachi Resolvers

Hitachi is a globally recognized leader in industrial automation, and their resolvers are integral components in many servo systems, robotics, and CNC machines. Hitachi resolvers are known for their robust design and accuracy in providing position and velocity feedback. They are widely used in demanding applications where reliability and precision are paramount. These resolvers play a crucial role in ensuring the smooth and efficient operation of various industrial processes.


Hitachi resolvers are designed to withstand harsh industrial environments, offering exceptional durability and performance. However, like any precision instrument, they are susceptible to wear and tear, electrical damage, and other failures over time. When a Hitachi resolver fails, it can lead to significant downtime and costly repairs. Roc Industrial LLC is your trusted partner for restoring your Hitachi resolvers to optimal working condition.



Supported Models & Series

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

  • Hitachi R Series Resolvers

  • Hitachi G Series Resolvers

  • Hitachi F Series Resolvers

  • Hitachi H Series Resolvers

  • Hitachi S Series Resolvers

  • Hitachi Brushless Resolver Units

  • Hitachi Servo Motor Resolvers (various models)

  • Hitachi CNC Machine Resolvers (various models)

  • Hitachi Robotics Resolvers (various models)

  • Specific part numbers: R7R-A, G5R-B, F3R-C, H9R-D, S1R-E (and variations)

  • Hitachi Incremental Resolvers

  • Hitachi Absolute Resolvers

If you don't see your specific Hitachi resolver model listed, please contact us. Our technicians have extensive experience with a wide variety of Hitachi resolvers and can likely assist you with your repair needs.



Common Hitachi Resolver Problems We Repair

Hitachi resolvers, while robust, can experience various issues that impact their performance. Recognizing these common problems can help you identify the need for professional repair services. Here are some of the common Hitachi resolver failures we address:

  • Loss of Signal: Weak or absent output signal, leading to inaccurate position feedback.

  • Signal Distortion: Distorted or noisy signals that compromise accuracy and control.

  • Encoder Faults: Errors in the encoder output, resulting in incorrect position readings.

  • Open or Shorted Windings: Damage to the internal windings, causing signal loss or erratic behavior.

  • Bearing Failure: Worn or damaged bearings, leading to increased friction and inaccurate readings.

  • Contamination: Ingress of dirt, oil, or other contaminants, affecting signal integrity and performance.

  • Connector Damage: Damaged or corroded connectors, causing intermittent signal loss or complete failure.

  • Broken Shaft: Physical damage to the resolver shaft, preventing proper rotation and signal generation.

  • Insulation Breakdown: Deterioration of insulation within the resolver, leading to short circuits and failure.

  • Vibration Damage: Excessive vibration causing internal components to loosen or break, affecting accuracy.


Our Hitachi Resolver Repair Process

Roc Industrial LLC follows a meticulous and comprehensive repair process to ensure your Hitachi resolver is restored to optimal working condition. Our process includes:

  1. Free Evaluation and Quote: We begin with a thorough evaluation of your Hitachi resolver to identify the root cause of the problem. This evaluation is free of charge, and we provide you with a detailed quote for the repair.

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

  3. Diagnosis Using Specialized Test Equipment: Our experienced technicians use state-of-the-art test equipment to diagnose the problem accurately. We employ advanced techniques to identify even the most subtle issues affecting your Hitachi resolver.

  4. Component-Level Repair and Replacement: We perform component-level repairs, replacing faulty components with high-quality replacements. Our extensive inventory of parts allows us to complete repairs quickly and efficiently.

  5. Load Testing and Quality Checks: After the repair, we conduct rigorous load testing and quality checks to ensure your Hitachi resolver meets or exceeds original performance specifications. We simulate real-world operating conditions to verify its reliability.

  6. Warranty-Backed Return and Support: All our Hitachi resolver repairs are backed by a comprehensive warranty. We stand behind our work and provide ongoing support to ensure your complete satisfaction.


Nationwide Repair Services

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


We offer fast shipping options and quick turnaround times to minimize your downtime. Our streamlined repair process and efficient logistics ensure that your Hitachi resolver is repaired and returned to you as quickly as possible. Contact us today to learn more about our nationwide repair services.



Why Choose Roc Industrial LLC?

When it comes to Hitachi resolver repair, Roc Industrial LLC is the clear choice. Here's why:

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

  • Warranty-Backed Repairs: All our repairs are backed by a comprehensive warranty, giving you peace of mind and assurance of quality.

  • Thousands of Parts in Stock: Our extensive inventory of parts allows us to complete repairs quickly and efficiently, minimizing your downtime.

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

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

  • Exceptional Customer Support: We are committed to providing exceptional customer support, from initial evaluation to post-repair assistance.

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

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