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Heidenhain resolver ground fault diagnostics

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.

Heidenhain Resolver Repair Services by Roc Industrial LLC

Is your Heidenhain resolver malfunctioning? Roc Industrial LLC provides expert Heidenhain resolver repair services to get your equipment back up and running quickly and reliably. Resolvers are critical components in many industrial applications, providing precise position and velocity feedback. When they fail, it can bring your entire operation to a standstill. We understand the urgency and offer fast, dependable repair solutions backed by decades of experience. Trust Roc Industrial LLC as your trusted partner for all your Heidenhain resolver repair needs. Our expertise, combined with our commitment to quality, ensures that your resolvers are repaired to the highest standards, minimizing downtime and maximizing productivity.



About Heidenhain Resolvers

Heidenhain is a globally recognized leader in precision measurement and control technology. Their resolvers are renowned for their accuracy, reliability, and robustness in demanding industrial environments. These resolvers are essential components in a wide range of applications, including CNC machine tools, robotics, automation systems, and other high-precision equipment. Heidenhain resolvers are designed to provide accurate position and velocity feedback, enabling precise control and optimal performance of the machinery they serve. The brand's commitment to innovation and quality has made them a preferred choice for manufacturers worldwide.


Heidenhain resolvers are integral to the smooth and efficient operation of numerous industrial processes. Their robust design and high accuracy make them suitable for harsh environments where other types of encoders may fail. From controlling the movement of robotic arms to ensuring the precision of CNC milling machines, Heidenhain resolvers play a vital role in maintaining the accuracy and reliability of automated systems. Their widespread use in critical applications underscores the importance of having access to reliable repair services when these components experience problems. Roc Industrial LLC is dedicated to providing top-notch repair services for Heidenhain resolvers, ensuring that your equipment operates at peak performance.



Supported Models & Series

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

  • ROD Series (ROD 426, ROD 436, ROD 456, ROD 466, ROD 486)

  • ERN Series (ERN 1387, ERN 1381, ERN 480, ERN 460)

  • EQN Series (EQN 1325, EQN 1337, EQN 425, EQN 431)

  • ROC Series (ROC 413, ROC 213, ROC 713)

  • Various custom and application-specific resolvers

  • Heidenhain Angle Encoders with Resolver Interface

  • Heidenhain Modular Encoders with Resolver Feedback


Common Heidenhain Resolver Problems We Repair

Heidenhain resolvers, while robust, can experience failures due to various factors such as wear and tear, environmental conditions, and electrical issues. Roc Industrial LLC specializes in diagnosing and repairing a wide range of common problems.

  • Resolver Ground Fault Diagnostics: Identifying and resolving ground faults that can disrupt signal integrity and cause inaccurate readings.

  • Signal Loss or Weak Signal: Addressing issues that cause the resolver signal to degrade or disappear, leading to control system errors.

  • Position Inaccuracy: Correcting errors in position feedback that can result in misaligned movements and reduced precision.

  • Communication Errors: Troubleshooting communication problems between the resolver and the control system, ensuring reliable data transfer.

  • Overheating: Diagnosing and resolving overheating issues that can damage the resolver's internal components and reduce its lifespan.

  • Bearing Failure: Replacing worn or damaged bearings to ensure smooth and accurate rotation of the resolver shaft.

  • Contamination: Cleaning and repairing resolvers that have been contaminated by dirt, oil, or other substances that can interfere with their operation.

  • Broken or Damaged Windings: Repairing or replacing damaged windings that can cause signal distortion and reduced performance.

  • Encoder Faults: Addressing encoder-related issues that can affect the resolver's ability to provide accurate position feedback.

  • Resolver Excitation Problems: Troubleshooting issues related to the excitation signal required for proper resolver operation.


Our Heidenhain Resolver Repair Process

Roc Industrial LLC follows a meticulous repair process to ensure that your Heidenhain resolvers are restored to optimal performance. Our process includes:

  1. Free Evaluation and Quote: We begin with a thorough evaluation of your Heidenhain resolver to identify the root cause of the problem. Based on our findings, we provide you with a detailed quote for the repair.

  2. Shipping Instructions: Once you approve the quote, we provide clear instructions on how to safely ship your resolver to our repair facility. We recommend using appropriate packaging to prevent further damage during transit.

  3. Diagnosis Using Specialized Test Equipment: Our experienced technicians use advanced diagnostic equipment to pinpoint the exact components that need repair or replacement. This includes testing the resolver's signal output, insulation resistance, and other critical parameters.

  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 expedite the repair process and minimize downtime.

  5. Load Testing and Quality Checks: After the repair, we subject the resolver to rigorous load testing to ensure that it meets or exceeds original performance specifications. We also conduct thorough quality checks to verify that all repairs have been completed correctly.

  6. Warranty-Backed Return and Support: We stand behind our work with a comprehensive warranty. Your repaired Heidenhain resolver is carefully packaged and returned to you, along with documentation of the repairs performed. Our customer support team is available to answer any questions you may have.


Nationwide Repair Services

Roc Industrial LLC provides Heidenhain resolver repair services to customers nationwide. Whether you are located in New York, Los Angeles, Chicago, Houston, or Dallas, we can help you get your equipment back up and running quickly. We offer fast shipping options and quick turnaround times to minimize downtime and keep your operations running smoothly. Our nationwide service network ensures that you have access to expert repair services, regardless of your location.



Why Choose Roc Industrial LLC?
  • 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 Heidenhain resolver repairs.

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

  • Thousands of Parts in Stock: Our extensive inventory of parts allows us to expedite the repair process and minimize downtime.

  • Fast Turnaround, Often Same-Day: We understand the urgency of getting your equipment back up and running. We offer fast turnaround times, often with same-day service available.

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

  • 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 Heidenhain resolver slow down your operations. Contact Roc Industrial LLC today for a free evaluation and fast, reliable repair. We are committed to providing top-notch service and ensuring that your equipment operates at peak performance. Our expertise in Heidenhain resolver repair, combined with our dedication to customer satisfaction, makes us the ideal partner for all your repair needs. Trust Roc Industrial LLC to get your resolvers back in optimal condition quickly and efficiently.

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