Repairs and Service For

Expert 3-Phase Motor Repair in Michigan

A&C Electric provides 3-phase motor repair to companies in Michigan, Indiana and Ohio. We repair motors ranging from 0.25 HP to 5000 HP, including complete support for gearboxes and electric motor systems.

Our process covers mechanical cleaning, electrical testing, bearing replacement, winding restoration, and load testing. For time-sensitive applications, we also offer a large inventory of refurbished and new 3-phase motors available for immediate replacement.

Repairs are completed in less time and at a significantly lower cost compared to full motor replacement. Contact A&C Electric today to save time and money with industrial motor repair services.

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Typical 3-Phase Motor Repair Process

Disassembly & Cleaning:

All mechanical parts are steam cleaned and inspected.
Component Reconditioning:

We restore damaged parts and perform insulation/dielectric testing.
Electrical Testing:

Surge, hi-pot, resistance and vibration testing to diagnose faults.
Winding Work:

Windings are reinsulated and baked. Stators are rewound, dipped, and baked.
Bearing Housing & Shaft Work:

We resleeve housings and metalize worn shafts.
Rotor & Bearing Replacement:

Rotors are balanced and fitted with new bearings and seals.
Final Testing & Assembly:

Motors are reassembled, tested under load and painted.

Each job includes a detailed service report outlining the work completed to support long-term planning and reduce the risk of unexpected failures. Our industrial repair capabilities include in-house motor lifting and handling, part fabrication and advanced testing.

Contact A&C Electric to repair your AC 3-phase motor in Michigan, Indiana or Ohio.

Fill Out Repair/Shipping Document

Ship Your Item To A&C Electric

A&C Electric Certified Technicians Dismantle Your Product

A&C Electric Sends you a Quote for Approval of Repair

Motor is rebuilt and shipped back to you ASAP

A.C. 3 Phase Motor Repair Capabilities

We have documented 10,000 repair reports in our Database spanning across 50 different manufacturers

We repair A.C. Motors, D.C. Motors, Servo Motors, Press Drives, Gearboxes, and Spindles

Capable of 24-hour repairs in many cases

We have thousands of spare and rebuilt motors in our inventory for parts or exchange motors

A.C. 3 Phase Motor Repair Procedures

Data

Motor nameplate data is recorded

Inspection

A visual inspection of any damage to the motor.

We check for

Damaged Leads/Terminals
Worn output shaft/keyways
Cracks in end bells or covers
Cracks in motor base

Job Ticket

We complete to full write up off all motor data

Including

All winding tests (Resistance, Meg Ω, Continuity)
All bearing sizes
All seal sizes
Brake torque tests (Record Torque, winding resistance)
Feedback Tests (Tachometer/Encoder)

Motor Disassembly

Bearing and seal sizes are recorded
Bearing fits are measured on shaft and End bell
Brake torque is measured as well as resistance and Meg Ω
More winding tests are performed (Surge and HiPOT tests)
Stator is then washed and baked in oven (or burned out if required)
Core test is performed on the stator housing
Magnets are inspected for cracks

Assembly

New bearings are installed
New seals are installed
If required, new windings are impregnated
Brakes are rebuilt or replaced depending on manufacturer design.

Rotor Balancing and Testing

Rotor is run through a full vibration diagnostic

Run Testing

Every Motor is Run for a minimum of 1 hour using one of our drives.
We use Siemens S110, S120, IndraDrive, AB Kinetix 300, Yaskawa 7, and AMC drives

Service Report

A Final 3-page Service Report is filled out
A photo of nameplate and motor is attached
A motor tag is installed on motor with QR code linking Service Report and Job Histories
If requested, a YouTube link is attached to the service report of motor