Product Description
The Fanuc A06B-1389-B335#3D4B is a robust and dependable AC Servo Motor designed for demanding industrial automation applications. This motor delivers exceptional performance with precise control and high torque output, ensuring accurate and efficient operation in robotic systems, CNC machines, and other motion control equipment. Its rugged construction and advanced design guarantee long-term reliability and minimal downtime, even in harsh environments. The A06B-1389-B335#3D4B features a compact footprint for easy integration and is engineered for seamless compatibility with Fanuc servo amplifiers and control systems, providing a complete and optimized solution for your automation needs. This motor is a proven solution to enhance productivity and maintain consistent performance in critical manufacturing processes.
Is Your Device Showing These Signs?
A06B-1389-B335#3D4B commonly exhibits issues such as resolver signal degradation, necessitating resolver replacement or cable repair. Overheating due to insufficient cooling or excessive load causes thermal faults and performance degradation. Drive amplifier failures, often stemming from capacitor degradation or IGBT malfunctions, require component-level repair or complete amplifier replacement. Backlash or excessive friction within the gear train leads to positioning inaccuracies, demanding gear replacement or lubrication. Communication errors with the CNC controller, traced to faulty encoder feedback or corrupted firmware, need encoder repair/replacement or firmware reflashing.
Technical specifications
The Fanuc A06B-1389-B335#3D4B is a robust and reliable AC Servo Motor designed for demanding industrial automation applications. This motor features a high-resolution encoder, providing precise position and velocity feedback for accurate motion control. Its compact design allows for integration into space-constrained environments without sacrificing performance. The A06B-1389-B335#3D4B delivers exceptional torque and acceleration capabilities, ensuring rapid and efficient operation in dynamic applications. It is engineered with durable materials and advanced cooling technology to withstand harsh operating conditions and maintain consistent performance over extended periods. This servo motor is compatible with a range of Fanuc servo amplifiers and control systems, facilitating seamless integration and simplified programming. The A06B-1389-B335#3D4B is a dependable solution for enhancing productivity and precision in various automation processes, including robotics, CNC machining, and material handling. It meets stringent quality standards and undergoes rigorous testing to guarantee long-term reliability and minimal downtime.
Our Repair Process for the
A06B-1389-B335#3D4B
Our repair process for the A06B-1389-B335#3D4B begins with a comprehensive diagnostic assessment to pinpoint the root cause of the malfunction, whether it be resolver signal degradation, overheating, drive amplifier failure, gear train issues, or communication errors. Resolver problems mandate either resolver replacement or cable repair. Overheating requires immediate attention to the cooling system and load management. Drive amplifier failures necessitate component-level repair, such as capacitor or IGBT replacement, or complete amplifier replacement. Gear train issues demand gear replacement or lubrication. Communication errors are resolved through encoder repair or replacement, or firmware reflashing, as dictated by the diagnostic findings. Each repair is followed by rigorous testing to ensure optimal performance and reliability before the unit is returned.
Your Guarantee: Warranty & Lifetime Support
Your satisfaction is our top priority, and we confidently stand behind the quality of our repairs. That's why every repair service is covered by our comprehensive 24-month warranty. Furthermore, we offer lifetime phone support – if you have questions or need assistance related to our repair down the road, we're here to help. Our service commitment is straightforward: we guarantee our work, and if you're not satisfied, we will make it right. Learn More about our Repair process.
Comprehensive Repairs You Can Depend On
We take immense pride in the quality and reliability of our work. Our process goes beyond simply fixing the immediate problem. We perform a comprehensive inspection of your main board (or other equipment) and proactively replace components known to be failure-prone or showing signs of potential future failure. Before any item is returned, it undergoes rigorous functional testing to ensure it meets performance specifications and operates flawlessly. Visit our main Repair Services page to learn more.
Save Significantly
Our primary goal is to save you hundreds, or even thousands, of dollars compared to the cost of new equipment replacement. By repairing existing components, we provide an economical solution that is also eco-friendly. At Roc Industrial, our commitment to integrity and community drives our consistent growth and ensures you receive a reliable, cost-effective solution.

Please Note: Roc Industrial operates as an independent service provider and is not an authorized distributor for the manufacturers or brands mentioned. Consequently, the original manufacturer's warranty is not applicable to items repaired or sold by us. Roc Industrial provides its own 2-year warranty on all repair services performed.

















