Brands / Marathon
Marathon Motor Repair
A Plus Electric Motor Repair, Inc. repairs and rewinds Marathon motors at our shop in St. Charles, Illinois. Marathon motors run pumps, fans, compressors and process equipment in plants across the Midwest, and we repair Marathon AC motors up to 650 HP 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
Marathon Equipment We Repair
What to send us
A photo of the nameplate speeds up quoting. On Marathon motors, the model number and catalog number identify the exact design. Include horsepower, voltage and frame if the nameplate is damaged, a short description of the failure, and how quickly you need the motor back.
Schedule a Free PickupCall (630) 283-3569Request a Quote OnlineMarathon Is Now Part of WEG
Marathon was a Regal Beloit brand for decades. In 2024, Regal Rexnord sold its industrial motors and generators business, including Marathon, to WEG. Motors already in service carry Marathon or Regal nameplates either way, and we repair both. Smaller HVAC and commercial motors under the Century and Leeson names remain with Regal Rexnord.
Why plants send their Marathon 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 Marathon 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 Marathon 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 Marathon Motors Come In
Need a new Marathon 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 Marathon
Q1Marathon was sold to WEG. Can we still get our Marathon motors fixed?
Yes. Marathon motors already in service are repaired the same way they always were, and when replacement makes sense we can quote a current equivalent.
Q2Our Marathon model is discontinued. What now?
We can repair or rewind it to the original design, or match a current motor to your frame, mounting, shaft and enclosure so it drops in without changes.
Q3How do you decide between repair and replacement?
It mostly comes down to two numbers: what the repair costs and how long a new one takes to arrive. Sometimes the repair costs more than a new motor, but if the OEM is quoting four to five weeks, repair still gets your line running sooner. We lay out both options with real prices and lead times so you can make the call. Call (630) 283-3569 and we will quote it.
Q4Is a rewound motor as good as a new one?
In a lot of cases it is better. We rewind with Grade H magnet wire, a higher temperature rating than most shops use, and seal the windings with Elantas varnish. Plenty of our motors leave the shop in better shape than when they left the factory.
Other brands we repair & sell
Marathon 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. Marathon, WEG and Regal Rexnord 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.