Product Description
The Mitsubishi HC-MF43-S1, a 0.4 kW servo motor from the MELSERVO HC series, offers efficient performance at a rated speed of 3000 r/min. Designed for indoor use, away from direct sunlight and harmful substances, it operates reliably between 0 to +40 degrees Celsius and can be stored between -15 to 70 degrees Celsius, up to 1000 meters in altitude. This lightweight (1.45 kg), totally enclosed, self-cooled motor features a permissible radial load of 55 lb, an IP44 rating, a rated current of 2.8 A (9 A max), ensuring easy integration and minimal maintenance.
Is Your Device Showing These Signs?
The Mitsubishi HC-MF43-S1 servo motor commonly requires repair due to issues stemming from encoder failures, resulting in positioning errors and operational downtime. Winding shorts and open circuits within the motor stator are frequent problems, leading to torque deficiencies and overheating. Bearing degradation causes excessive noise and vibration, impacting performance and potentially damaging the motor shaft. Connector damage and cable breaks interrupt signal transmission, preventing proper motor control and feedback. Resolving these issues restores the servo motor to optimal functionality.
Technical specifications
Mitsubishi HC-MF43-S1: motore servomotore MELSERVO HC da 0.4 kW, 3000 r/min, uso interno (0-40C), stoccaggio (-15-70C), altitudine max 1000m, 1.45 kg, IP44, corrente nominale 2.8 A (9 A max), carico radiale 55 lb.
Our Repair Process for the
HC-MF43-S1
Our repair process for the Mitsubishi HC-MF43-S1 servo motor begins with a comprehensive evaluation to pinpoint the exact cause of malfunction, focusing on encoder integrity, winding condition, bearing health, and connector/cable functionality. Encoder failures necessitate replacement or precise recalibration to eliminate positioning errors. Winding shorts and open circuits require stator rewinding or component-level repair to restore proper torque and thermal management. Bearing degradation demands bearing replacement to mitigate noise, vibration, and potential shaft damage. Damaged connectors and broken cables are replaced or repaired to ensure uninterrupted signal transmission and motor control. Following repairs, the servo motor undergoes rigorous testing to verify performance and reliability before it is returned to operation.
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.

















