Mitsubishi AC Motors Mitsubishi DC Motors Mitsubishi Spindle Motors

Mitsubishi AC Servo Motor Repair

Every Mitsubishi AC servo motor presents a unique set of challenges to determine what issues are causing the motor to fail. Our evaluation process is meticulous and proven to be effective in finding cause of failure in these motors.

Mitsubishi ac servo motor that is not only repaired but has been refurbished back to like new condition

In order to properly repair your Mitsubishi motor, we need to have a good working relationship with the factory. The ability to obtain original technical datasheets allows us to make effective repairs. Without this information, a motor can only be repaired to the point where it “runs.” But just because a motor “runs” doesn’t mean it has the proper torque, mechanical tolerances, or feedback accuracy. This combined with testing your motor on a factory drive before it leaves means you can trust that your motor will perform to its factory specifications once installed in the machine.

While other repair shops may need to order parts for a repair, Servotech maintains an extensive inventory of replacement parts such as bearings, seals, connectors, feedback devices and more. Doing so allows us to offer the quickest turnaround possible on your Mitsubishi AC servo motor.

Mitsubishi DC Servo Motor Repair

Each Mitsubishi DC servo motor that arrives at our facility will go through an extensive evaluation to determine the cause of failure. Our DC motor technicians go through the entire motor and inspect all electrical and mechanical components meticulously, repairing or replacing any parts that do not meet factory specifications. Our goal is to extend the life of your DC servo motor, returning it to you in like-new condition.

A black Mitsubishi dc servo motor that was repaired and refurbished by technicians at Servotech, Inc.

Since DC servo motors are no longer considered current technology, it can be a challenge sourcing replacement parts for these older models. Servotech takes pride in maintaining an extensive inventory of hard to find parts, as well as fabricating or reverse engineering those that are no longer available. With our in-house machine shop and 3D printing capabilities, there is no problem too difficult for our team to tackle. Whether your motor has a bad winding, failed feedback device or is simply filled with contamination from worn brushes, you can trust that your motor is in good hands when you send it to Servotech.

Our Repair & Refurbishment Process

1. Checking In
  • Motor is photographed and documented by our receiving department
  • Unique job number is assigned
  • Acknowledgement is sent via email
  • Motor is delivered to the appropriate department to be evaluated

2. Evaluation

The evaluation of each Mitsubishi servo motor is extremely thorough and is 100% free for all our customers. Our technicians fully inspect all mechanical and electrical parts. They also perform multiple tests to determine the cause of failure. This includes, but is not limited to:

  • Bearing fits
  • Housing fits
  • Worn output shafts
  • Corroded and/or broken flanges
  • Burnt Stator Windings
  • Failed Encoders
  • Damaged Connectors
A typical servo motor when it arrives in the shop, and then after we service it.

3. Quote

Our purchasing department then generates a firm quote, outlining the cause for failure, and listing all needed parts for repair. Our team excels in sourcing any parts that are not already stocked in our extensive inventory. We understand that getting your machine up and running is of utmost importance, and we go above and beyond to offer you the quickest delivery possible.

4. Servo Motor Repair

Once the quote is approved, orders are placed for any needed parts and our technicians proceed with repairs. Anything that requires our in-house services, such as winding or machine work, is taken to the corresponding department. When ready, the motor is re-assembled with all new parts and hardware, bringing it to good-as-new condition.

Encoders and connectors in stock at Servotech. The right components, readily available.

5. Final Testing

Upon completion of repairs, the motor heads to our quality control department for final testing. Here, we review the entire repair and run it on a factory specific drive. Using the same drive that is used in your machine ensures that your Mitsubishi motor will run just as it should once re-installed. We take great pride in maintaining an inventory of factory drives as it allows us to offer the most effective, reliable refurbishment possible.

Servotech uses software to reprogram new encoders that will function properly when they are run on one of our factory drives.

6. Painting & Re-Labeling

Not only does a fresh coat of paint make your Mitsubishi servo motor look brand new, but it also provides protection from outside contaminants, extending the overall lifespan of the motor. Our painting department provides application-specific paint, such as:

  • Food grade epoxy
  • IP67 epoxy
  • Marine epoxy

7. Return Shipping

Our shipping department takes pride in offering the highest quality care when preparing a refurbished motor for its journey back to you. Protective caps are put on connectors, nameplates are applied to the motor, and documentation is reviewed to make sure any accessories, such as eye bolts or shaft keys, are returned to you. Our high-quality spray foam packaging system creates a mold around the motor to keep it safe in the box during shipping. For larger motors that require freight shipping, we build a custom crate on-site to fit each motor’s unique size and shape..

  • Bearing fits
  • Housing fits
  • Worn output shafts
  • Corroded and/or broken flanges