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Servo motor repair · Yaskawa

Yaskawa servo motor repair

Star Automations repairs Yaskawa servo motors, including Sigma series motors such as SGM, SGMAV, SGMJV and SGM7 frames. The motor is inspected, the failed parts are repaired or replaced, the encoder is aligned where needed, and the motor is proved on our servo motor test system with a no-load run and a load run before it leaves our Chennai bench. We are not a Yaskawa dealer or service partner; the brand name describes the motor we repair.

Send the nameplateWhatsApp
Yaskawa servo motor repair
  • 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.

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.

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
WhatsApp the nameplateSend by email
00Series

Servo motor series we repair

Yaskawa SGM7J

Sigma-7 series. Servo motor repair and load test.

Yaskawa SGM7A

Sigma-7 series. Servo motor repair and load test.

Yaskawa SGM7G

Sigma-7 series. Servo motor repair and load test.

Yaskawa SGM7P

Sigma-7 series. Servo motor repair and load test.

Yaskawa SGMJV

Sigma-V series. Servo motor repair and load test.

Yaskawa SGMAV

Sigma-V series. Servo motor repair and load test.

Yaskawa SGMGV

Sigma-V series. Servo motor repair and load test.

Yaskawa SGMSV

Sigma-V series. Servo motor repair and load test.

Yaskawa SGMMJ

Servo motor repair and load test.

Yaskawa SGMMV

Sigma-V mini series. Servo motor repair and load test.

Yaskawa SGMPS

Servo motor repair and load test.

Yaskawa SGMAS

Servo motor repair and load test.

Yaskawa SGMGH

Servo motor repair and load test.

Yaskawa SGMCS

direct-drive series. Servo motor repair and load test.

01Failures

Common Yaskawa servo motor failures

Encoder errors

Absolute encoder alarms and battery-backed position loss after power cuts or cable damage.

Bearing noise

High-cycle axes on packaging and pick-and-place machines wear bearings early.

Brake faults

Brakes that drag on release or slip when holding a load.

Connector and cable damage

Flexing in cable chains breaks feedback leads at the motor connector.

02Test bench

What the test bench checks

Yaskawa Sigma motors are read and run on our servo motor test system without the matching SERVOPACK, then loaded on the rig.

  • Insulation resistance and hi-pot
  • Winding resistance and balance
  • Encoder or resolver feedback and commutation offset
  • Brake release and holding, where fitted
  • No-load run, then load run; speed and current against the nameplate
  • Vibration and noise at rated speed
03Repair or replace

Repair or replace

Repair suits motors where the frame is sound and the fault is the encoder, bearings, brake or connector, which covers most Sigma motors that reach us.

Replacement suits motors with a damaged shaft, weak magnets or a winding that fails insulation tests. If the motor is an older Sigma generation, a migration may be worth planning while the repair keeps you running.

04Next

Before you send it

05How to send

How to send the motor

You can send a servo motor from anywhere in India. Talk to us before you courier, so the unit is expected and logged on arrival.

  1. Send the nameplate

    WhatsApp a clear photo of the nameplate, the alarm code and what the machine was doing when it failed.

  2. We confirm repairability

    We tell you whether we can test and repair that model before anything is shipped.

  3. Courier or pickup

    Courier the motor to our Chennai bench, or ask us to arrange pickup where needed.

  4. Inspection and quote

    The motor is opened, inspected and photographed. You get the findings and a quote before work starts.

  5. Repair, test, dispatch

    Repaired, run-tested and load-tested, then dispatched with a printed test report.

Yaskawa servo motor series and models we repair

We repair all frame sizes and ratings in these series, including older and discontinued versions. The list is a guide, not a limit: send us the nameplate. See also AC servo motor repair and all servo motor brands.

Sigma-II and Sigma-III

SGM, SGMAH, SGMPH, SGMGH, SGMSH, SGMUH, SGMCS direct drive, older USAREM and USAFED

Sigma-5

SGMAV, SGMJV, SGMGV, SGMSV, SGMPS, SGMCS

Sigma-7

SGM7J, SGM7A, SGM7G, SGM7P, SGM7M

Linear servo

SGLF, SGLG, SGLT linear motors

→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. 1 · Nameplate photoSend it on WhatsApp or the form
  2. 2 · Repairable? QuoteUsually the same working day
  3. 3 · Courier or pickupThe unit reaches our bench
  4. 4 · Bench diagnosisInsulation, windings, brake, encoder
  5. 5 · RepairFailed parts, bearings, seals, brake
  6. 6 · Align and run-testEncoder aligned; no-load and load run
  7. 7 · Report and dispatchPrinted test report with the unit
  8. 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.

Start with step 1WhatsApp the nameplate
06Questions

Yaskawa servo motor questions

More on the FAQ page.

Do you repair Yaskawa servo motors?

Yes, including Sigma series motors such as SGM, SGMAV, SGMJV and SGM7 frames. Send the nameplate and we confirm before you courier.

Can you fix absolute encoder position loss?

Yes. We check the encoder, its backup and the cable, repair or replace what failed, and align the encoder before the load test.

What should I send for a quote on a Yaskawa motor?

A photo of the nameplate, the alarm code and a note on the symptom. We confirm repairability before you courier.

Do you need a Yaskawa drive to test the motor?

No. Our servo motor test system runs Yaskawa motors without the original drive, then a load rig applies load.

Is there a warranty?

A written warranty is given after a successful repair. Warranty terms are stated on each quotation.

Encoders and feedback on these motors

Older Yaskawa motors use C-channel (UTOPH-81AWF), UTOPI and 12 or 15-bit absolute encoders. See Yaskawa encoder repair.

05Why Star

One universal test bench for Yaskawa and 180+ other servo brands

Most repairers test a servo motor on the drive of its own brand, or not at all. Star Automations tests every Yaskawa servo motor on its Universal Servo Motor Repair Equipment (Mitchell TI-5000JX), India’s first universal servo motor test system. It reads and aligns the feedback device and runs the motor under load without the original drive, so the result is the same whatever the brand.

  • Encoder and feedback read, zero position set and alignment checked before dispatch
  • No-load and load run, with speed and current compared against the nameplate
  • One test report format for every brand, so mixed fleets are easy to compare
  • Motors from machines that mix Yaskawa with other makes can go in a single consignment

Related pages for Yaskawa:

Send the nameplate. We confirm repairability before you courier.

WhatsApp a nameplate photo and the alarm code to +91 97866 22233, or email info@starautomations.com.

Send the nameplateWhatsApp