Servo Motor Repair
AC servo motor rebuilds with encoder alignment, for Canada and the USA
- Free evaluation
- 24–72 hr typical
- 12-month warranty
- Tested on our jigs
Short answer
Can a servo motor be repaired?
Yes. Most servo motors can be repaired or fully rebuilt, including new bearings, seals and brakes, winding repair and encoder replacement. Every motor we repair gets its encoder aligned to the motor's commutation offset and is run under drive control on our own test jigs before it ships back with a test report and a 12-month warranty.
What we repair
What we repair on a servo motor
Bearings & seals
Worn or noisy bearings and leaking shaft seals replaced to stop vibration and contamination.
Holding brakes
Brakes that drag, slip or will not release, repaired or replaced and tested.
Windings & insulation
Shorted, grounded or open windings, insulation testing and rewinding where needed.
Encoder & resolver
Feedback devices repaired or replaced, then aligned to the motor's commutation offset.
Shafts & keyways
Damaged shafts, keyways and couplings repaired so the motor runs true.
Connectors & cables
Power and feedback connectors and internal leads that cause intermittent faults.
Diagnosis guide
Common servo motor faults we fix
Noise, vibration or heat while running
Worn bearings, shaft damage or a dragging brake
Overcurrent or ground fault on the drive
Shorted or grounded winding, or a damaged power connector
Encoder or feedback alarm
Failed encoder, contamination inside the motor or a damaged feedback connector
Axis jumps or runs rough after an encoder swap
Encoder not aligned to the commutation offset
Brake will not release
Open brake coil, worn friction disc or a brake supply fault
Oil or coolant inside the motor
Failed shaft seal or damaged housing
Quality
How we test every repaired servo motor
Parts replaced is not the same as fixed. Every unit is proven under power before it leaves our Mississauga, Ontario repair centre.
- 01
Photos and condition report when the motor arrives
- 02
Insulation and winding checks before we quote
- 03
Encoder aligned to the commutation offset
- 04
Run under drive control on our test jigs, with a test report
All makes & models
We repair every servo motor brand
We repair servo motors from any manufacturer, current or obsolete. These are some of the brands and series we see most often. If yours isn't listed, we still repair it.
Siemens
- 1FK7
- 1FT6
- 1FT7
- 1FK6
Rexroth Indramat
- MKD
- MSK
- MAC
- MHD
Allen-Bradley
- MPL
- VPL
- TL Series
Fanuc
- αi servo motors
- βi servo motors
Yaskawa
- SGMAH
- SGMGH
- Sigma-7 SGM7
Any brand. Any model.
Kollmorgen AKM · Mitsubishi HF / HG · Bosch · Baumüller · 1,000+ brands
Don't see yours? Ask a technician
Brand names are trademarks of their owners and are used only to identify the equipment we repair.
Your options
Repair, exchange or replace?
Repair your unit
Your original unit, repaired at component level and tested. Usually a fraction of the price of new.
Request a RepairExchange unit
A tested replacement at a lower price. Ship us your unit and we ship the replacement once it arrives.
Ask About ExchangeReplacement part
New, surplus or refurbished, sourced from 1,000+ brands, including discontinued parts.
Request a QuoteFAQ
Servo motor repair questions
Do you align the encoder after a servo motor repair?
Yes. Every servo motor we repair gets its encoder aligned to the motor's commutation offset before testing.
How do you test a repaired servo motor?
Every motor is run under drive control on our own test jigs, and a test report ships with the unit.
How long does a servo motor repair take?
Typical turnaround is 24–72 hours once you approve the quote. Exchange motors usually ship within 1–2 business days of receiving your unit.
Can you rewind a servo motor?
Yes. We test the windings and insulation, and repair or rewind them when they are shorted, grounded or open.
What warranty comes with a servo motor repair?
Every servo motor repair comes with a 12-month warranty.
Servo motor down? Let's get it running again.
Free evaluationNo work without your approval12-month warranty