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.
Servo motor repair · Mitsubishi MR-J3
Mitsubishi MR-J3 HF-KP and HF-SP motor repair in India
Star Automations repairs Mitsubishi HF-KP and HF-SP servo motors from the MR-J3 generation, which many plants still run. Star Automations is an independent multi-brand repair company and is not an OEM service centre.
- 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
01Repair
Common faults we repair
MR-J3 era motors are still on many machines. When one fails, replacement means moving to a newer series, which can mean a new drive, new cables and a new parameter set.
Motor will not run or no torque
Winding, brake and feedback faults separated by test.
Encoder or feedback faults
Encoder alarms traced to the encoder, cable or drive.
Bearing noise and vibration
Bearings, shaft and rotor condition.
Overheating
Thermal sensors, insulation and winding checks.
Brake faults
Holding-brake release and wear.
Cable and connector damage
Power and feedback cables and connectors.
Models we repair
- HF-KP series
- HF-SP series
- HF-MP and HF-SP variants
- MR-J3 drives (see drive repair)
Star Automations is an independent multi-brand repair company and is not an OEM service centre. Brand names are used only to say which units we repair. Send the model and we confirm repairability before you ship.
02Process
From model number to tested unit in five steps
Findings come before repair.
Send the model
Make, model, fault and a photo of the nameplate, on WhatsApp or the request form.
Courier or pickup
Units should be sent de-energised and disconnected. Pickup can be arranged.
Findings
The failed part and the repair options, before any work is approved.
Repair and functional check
Repair on your approval, then a power-up and functional check on the functions the fault affected.
Report and dispatch
Printed report with findings, parts replaced and test readings, sent back with the unit.
→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.
Can I keep my MR-J3 drive and repair the motor?
Often yes. Send the motor model and the drive alarm and we confirm whether the motor or the encoder is at fault.
What is the alternative to repair?
Moving to a current series. The findings report states both options so you can compare.
Is Star Automations an OEM service centre?
Star Automations is an independent multi-brand repair company and is not an OEM service centre.
How fast can a repair be done?
Emergency same-day, urgent 3 working days and standard 7 working days are available where the fault and parts allow. The timeline is stated on the quote.
Send the model and the fault.
WhatsApp or call +91 97866 22233, or email info@starautomations.com.