Brands / Kollmorgen
Kollmorgen Servo Motor Repair
A Plus Electric Motor Repair, Inc. repairs Kollmorgen servo motors at our shop in St. Charles, Illinois. Kollmorgen servo motors drive packaging machines, converting lines, printing presses, robotics and machine tools, and when one fails the whole machine stops. We repair Kollmorgen servo motors 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
Kollmorgen Equipment We Repair
What to send us
Send a photo of the motor’s label. On Kollmorgen motors, the full model number identifies the frame, winding, feedback and options. Include the drive model if you have it, the fault code or symptom, and how quickly you need the motor back.
Schedule a Free PickupCall (630) 283-3569Request a Quote OnlineKollmorgen and Regal Rexnord
Kollmorgen was part of Altra Industrial Motion, which Regal Rexnord acquired in 2023. That puts Kollmorgen in the same family as Boston Gear, Leeson and Century.
Why plants send their Kollmorgen 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 Kollmorgen 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 Kollmorgen Servo Motors Come In
Need a new Kollmorgen 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 Kollmorgen
Q1Do we need to send the drive or cables too?
Usually not. Send the motor with its model number and the fault you are seeing. If the drive or cable is suspect, we can look at those too.
Q2Will the feedback be aligned when the motor comes back?
Yes. The encoder or resolver is realigned to the motor before it ships, so it is ready to run with your drive.
Q3How do we stop coolant from killing our servo 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 the motor from direct spray.
Q4How 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.
Other brands we repair & sell
Kollmorgen 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. Kollmorgen, AKM, Goldline 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.