Emergency: same day
For a line-down motor, where the fault and parts allow. WhatsApp us before you send it so the bench is kept free.
Machine tools · CNC
CNC spindle and axis servo motor repair
We repair CNC axis servo motors, spindle motors and their drives: bearing and encoder faults, coolant damage, winding faults and amplifier alarms. Axis motors are aligned and run-tested, spindle motors are checked for bearing noise and vibration, and every unit returns with a printed report.
- 25+years of servo repair, since 2000
- 3,000+customers across India
- 100+servo brands covered by our universal servo motor test equipment
- 5sites: Puducherry, Chennai, Bengaluru, Hyderabad, Delhi
- Same dayemergency repair option*
*Where the fault and parts allow. Every repaired unit returns with a printed test report.
Repair turnaround you can plan around
Send a photo of the nameplate first. We confirm whether the motor is repairable, and the quote, the same working day.
Urgent: 3 working days
Repair, encoder alignment and test, counted from the day the motor reaches the bench and the quote is approved.
Standard: 7 working days
Full repair, encoder alignment, run test under load and a printed test report.
- Free repairability check from a nameplate photo
- Printed test report with every motor
- Written warranty, terms stated on every quotation
- Pickup can be arranged; parts that must be imported are quoted with their own timeline
01Failures
What fails on these machines
- Coolant ingress into connectors and encoders
- Spindle bearing wear
- Pulsecoder and serial encoder alarms
- Amplifier overcurrent
02What we repair
What we repair
Servo motors
Windings, bearings, brakes, encoder alignment, no-load and load run.
OpenEncoders and resolvers
Repair, replacement, alignment and programming.
OpenServo drives
Component-level repair, tested with a motor.
Open03Line down
Line down? Servo Swap
If we hold a matching unit, Servo Swap ships a tested exchange unit while yours is repaired. Mark "line down" on the form.
→How it works
From nameplate photo to a tested motor in 7 steps
One route for servo motors, encoders and drives. You see the price before any work starts, and the report before the unit leaves our bench.
- 1 · Nameplate photoSend it on WhatsApp or the form
- 2 · Repairable? QuoteUsually the same working day
- 3 · Courier or pickupThe unit reaches our bench
- 4 · Bench diagnosisInsulation, windings, brake, encoder
- 5 · RepairFailed parts, bearings, seals, brake
- 6 · Align and run-testEncoder aligned; no-load and load run
- 7 · Report and dispatchPrinted test report with the unit
- Line down?Servo Swap ships a tested unit first. How Servo Swap works
EmergencySame day*
Urgent3 working days
Standard7 working days
*Where the fault and parts allow. Turnaround counts from when the unit reaches our bench and the quote is approved.
04FAQ
Questions
Can you repair a CNC spindle motor?
Yes. Spindle motors are checked for winding insulation, bearing condition, cooling fan and speed feedback, then run and checked for noise and vibration. Bearings are replaced with the grade the motor needs. Tell us the rated spindle speed when you send it.
My axis shows a pulsecoder or serial data alarm. Is it the motor?
Not always. Check the feedback cable and connector first, because coolant and chips often damage them. If the alarm follows the motor when you swap cables, send the motor. The encoder is tested, repaired or replaced, and aligned.
Do you repair the CNC amplifier as well?
Yes. Axis and spindle amplifiers are repaired at component level and tested with a motor. Send the amplifier model and the alarm code shown on the control, so we can check parts before it arrives.
Will the machine need re-referencing after repair?
If the encoder was replaced or an absolute encoder lost its data, the axis needs its reference position set again. We tell you on the report when that applies, so your team can plan it.
See also: repair by brand · repair by city · Servo Swap exchange · encoder repair · servo drive repair · Fanuc SV0368 / SV0366 alarm guide
Brand names identify the units we repair. Star Automations is an independent multi-brand repair company and is not an OEM service centre.