Brands / Mitsubishi Electric
Mitsubishi Electric Servo and Spindle Motor Repair
A Plus Electric Motor Repair, Inc. repairs Mitsubishi Electric servo motors, spindle motors and inverters at our shop in St. Charles, Illinois. Mitsubishi Electric motion control runs CNC machine tools, packaging equipment and automated lines across the Midwest. We repair Mitsubishi Electric equipment for customers throughout northern Illinois, northwest Indiana and southern Wisconsin.
& sell
- Service
- Repair, rewind, replace
- Standard
- 7–10 days
- Rush
- 3–5 days
- After hours
- (630) 283-8433
Free within 50 miles · Calls our office
Mitsubishi Electric Equipment We Repair
What to send us
Send a photo of the motor’s label. On Mitsubishi Electric servo motors, the model number identifies the series, capacity, encoder and options. Include the alarm number from the drive or CNC control, and how quickly you need the motor back.
Schedule a Free PickupCall (630) 283-3569Request a Quote OnlineWhy plants send their Mitsubishi Electric work to A Plus
We come get it
Free pickup and delivery within 50 miles of our St. Charles shop, with pickup or freight from farther out.
Nothing gets sent out
Winding, testing, dynamic balancing and machining all happen in our own shop. We rewind with Grade H magnet wire and Elantas varnish, a step above what most shops use.
7–10 days, or 3–5 rush
Time-critical jobs are worked through nights and weekends when a line is down.
EASA member shop
EASA, the Electrical Apparatus Service Association, is the international trade association for motor repair shops. Members get its engineering support, technical data and recommended repair practices.
One year, every repair
And when replacing is faster, same-day delivery on new motors.
Our Mitsubishi Electric repair process
Incoming inspection
We record the model and serial number, feedback type and the reported fault.
Electrical testing
Winding resistance, insulation and surge testing, plus checks of the encoder or resolver and the holding brake.
Teardown and failure analysis
We inspect bearings, seals, shaft, magnets and connectors for contamination and wear.
Written quote
You receive a repair quote, and a replacement option when one is faster or more economical.
Repair
Bearings, seals, brake, connectors and windings as required, with the feedback device realigned to the motor.
Final testing
before the motor is returned.
Common Reasons Mitsubishi Electric Servo Motors Come In
Need a new Mitsubishi Electric unit instead?
We sell new and surplus motors, gearboxes and drives too. Call with the nameplate and we will quote a matched replacement alongside the repair, so you can compare and decide.
Straight answers on Mitsubishi Electric
Q1Our drive shows an encoder alarm. Is it the motor?
It could be the encoder, the cable or the drive. Send the motor and the alarm number and we will test it. If the motor checks out, that tells you where to look next.
Q2Is there anything to do after an absolute-encoder motor is repaired?
If the encoder was replaced or reset, plan on re-establishing the machine’s home or origin position when it goes back in.
Q3How do we stop coolant from killing our servo and spindle motors?
Most coolant failures come in through worn shaft seals and connectors. Keep connectors pointed down with drip loops on cables, replace seals before they leak, and guard motors from direct spray.
Q4Our motors keep failing. Can you tell us why?
Usually the motor is pointing at something upstream. The most common culprits are incoming power problems, like voltage imbalance, spikes and drive-related shaft currents, and a harsh environment: heat, moisture, dust and washdown chemicals. Misalignment and bearing trouble round out the list. We tear every motor down, find what actually took it out, and tell you, so the replacement does not go the same way.
Other brands we repair & sell
Mitsubishi Electric unit down?
Office: Monday through Friday 8:00 AM to 4:30 PM, Saturday 8:00 AM to 12:00 PM. Emergency line answered 24/7.
A Plus Electric Motor Repair, Inc., 3483 Swenson Ave, St. Charles, IL 60174. Mitsubishi Electric and MELSERVO are trademarks of Mitsubishi Electric Corporation. A Plus Electric Motor Repair, Inc. is an independent repair facility and is not affiliated with or authorized by the manufacturer.