A Plus Electric Motor Repair, Inc. repairs and rewinds Siemens industrial motors at our shop in St. Charles, Illinois. Siemens motors are often paired with variable frequency drives, so we look at the motor and the drive together when diagnosing a failure. We serve customers throughout northern Illinois, northwest Indiana and southern Wisconsin.
- AC motors up to 650 HP, plus servo and spindle motors
- Rewinding, balancing and machining done in house
- EASA member shop, with a lead rewinder who has been rewinding motors since the 1970s
- VFD repair and configuration
- 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
Siemens Motors We Repair
- Siemens SIMOTICS and other NEMA AC motors
- General purpose and severe duty motors
- Inverter duty motors
- Pump, fan and compressor motors
- Siemens servo and spindle motors
- Single phase and three phase motors
Our Siemens 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 of bearings, shaft, rotor, stator and housings, including checks for drive-related bearing damage.
- Written quote for repair, or for replacement when that makes more sense.
- Repair. Rewinding, bearing replacement and shaft and housing machining as required.
- Balancing and final testing before the motor is returned.
Motors on Variable Frequency Drives
VFDs can push currents through motor bearings and put voltage stress on windings. Repeat bearing failures on a drive-fed motor often point to grounding or drive setup rather than the motor itself. When we find that pattern, we will tell you, and our on-site team can check drive parameters and grounding at your facility. See our guide to VFD troubleshooting, grounding and noise.
Common Reasons Siemens Motors Come In
- Bearing damage from shaft currents on VFD-driven motors
- Bearing failure from contamination, misalignment or lubrication problems
- Winding insulation breakdown from heat, moisture or voltage spikes
- Overheating from overload or blocked ventilation
- Encoder or feedback faults on servo motors
What to Send for a Quote
Send a photo of the nameplate showing the order number and serial number. Include the horsepower, voltage and frame size if the nameplate is damaged, whether the motor runs on a VFD, a short description of the failure, and how quickly you need it back.
Frequently Asked Questions
Do you repair Siemens servo motors?
Yes. See our servo motor repair page for the work we do on servo and spindle motors.
Is there Siemens motor 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 my Siemens motor fails after hours?
Call our 24-hour emergency line at (630) 283-8433.
Related Resources
- Servo motor repair
- On-site services and drive configuration
- 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 Siemens repair quote
Siemens and SIMOTICS are trademarks of their respective owner. A Plus Electric Motor Repair, Inc. is an independent repair facility and is not affiliated with or authorized by the manufacturer.