A Plus Electric Motor Repair, Inc. repairs and rewinds Nidec motors at our shop in St. Charles, Illinois. Nidec is the world’s largest electric motor manufacturer, and its industrial brands are installed in pumping stations, HVAC systems, process plants and machinery across the Midwest. We repair Nidec AC and DC motors up to 650 HP for customers throughout northern Illinois, northwest Indiana and southern Wisconsin.
- AC and DC motors up to 650 HP
- Rewinding, balancing and machining done in house
- EASA member shop, with a lead rewinder who has been rewinding motors since the 1970s
- Standard repairs in 7 to 10 days, rush repairs in 3 to 5 days
- One-year repair warranty
- Free pickup and delivery within 50 miles of St. Charles
The Brands Under Nidec
Many motors that started under other names are now Nidec products. Nidec acquired Emerson’s motor business in 2010, which brought the US MOTORS brand into Nidec Motor Corporation. In 2017 Nidec added Leroy-Somer motors and alternators and Control Techniques drives, also from Emerson. In 2019 it acquired Embraco refrigeration compressors.
That means a Nidec job that comes into our shop might carry a US MOTORS, Leroy-Somer, Emerson or Nidec nameplate. We repair all of them, along with the Control Techniques drives that often control them.
Nidec Equipment We Repair
- US MOTORS vertical hollow shaft and solid shaft pump motors
- US MOTORS and Nidec general purpose and premium efficiency AC motors
- Leroy-Somer IEC motors and gearmotors
- Older Emerson-branded motors
- Large horizontal motors for pumps, fans and compressors
- Inverter duty motors and the Control Techniques drives that run them
Our Nidec Repair Process
- Incoming inspection. We record the nameplate data and the motor’s condition when it arrives.
- Testing. Ground testing, surge comparison and core loss testing identify winding and core problems.
- Teardown and failure analysis. We inspect bearings, shaft, rotor, stator and housings to find the cause of failure, not just the symptom.
- Written quote. You receive a repair quote, and a replacement quote when a new Nidec motor or equivalent makes more sense.
- Repair. Rewinding, bearing replacement, shaft and housing machining, and brake work as required.
- Balancing and final testing before the motor is returned.
Common Reasons Nidec Motors Come In
- Bearing failure, especially thrust bearings on vertical pump motors
- Winding insulation breakdown from heat, moisture or voltage spikes
- Water intrusion on outdoor and pump station motors
- Overheating from overload, blocked ventilation or single phasing
- Shaft and bearing fit wear on older motors
- Drive-related bearing fluting on VFD-driven motors
What to Send for a Quote
A photo of the nameplate speeds up quoting. On Nidec and US MOTORS motors, the model number and the ID or catalog number identify the exact design. Include horsepower, voltage, frame and enclosure if the nameplate is damaged, a short description of the failure, and how quickly you need the motor back.
Frequently Asked Questions
Is US MOTORS part of Nidec?
Yes. US MOTORS has been a Nidec Motor Corporation brand since Nidec acquired Emerson’s motor business in 2010. See our US MOTORS repair page.
Do you repair Leroy-Somer motors?
Yes. Leroy-Somer is a Nidec brand, and we repair its IEC motors and gearmotors along with the rest of the Nidec family.
Should I repair or replace my Nidec motor?
It depends on size, age, efficiency rating and how quickly you need it running. Larger motors are usually worth repairing. We quote both options. See our repair vs. replace cost comparison.
Is there Nidec repair near me?
Our shop is in St. Charles, Illinois. Pickup and delivery are free within 50 miles, which covers most of the Chicago area and the Fox Valley. We also serve Rockford, northwest Indiana and southern Wisconsin. See our full service area.
What if a Nidec motor fails after hours?
Call our 24-hour emergency line at (630) 283-8433.
Related Resources
- US MOTORS motor repair
- Electric motor rewinding services
- Electric motor testing
- All motor brands we repair
Contact
A Plus Electric Motor Repair, Inc.
3483 Swenson Ave, St. Charles, IL 60174
Office: (630) 283-3569, Monday through Friday 8:00 AM to 4:30 PM, Saturday 8:00 AM to 12:00 PM
24-hour emergency line: (630) 283-8433
Request a Nidec repair quote
Nidec, US MOTORS, Leroy-Somer, Control Techniques and Embraco are trademarks of their respective owners. A Plus Electric Motor Repair, Inc. is an independent repair facility and is not affiliated with or authorized by the manufacturer.