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Motor Winding Companies

Last updated: January 2026

This directory lists 98 motor winding companies across the United States, from specialists in intricate permanent magnet motor windings to heavy industrial repair shops handling megawatts-scale induction motors.

Buyers are solving a range of critical problems, from mitigating motor failure risks in high-stress environments to optimizing efficiency through precision winding. This often involves ensuring proper turn-to-turn insulation, maintaining precise slot fill, and executing robust vacuum pressure impregnation (VPI) processes to protect against moisture and vibration.

Suppliers in this space vary significantly, ranging from small, specialized shops focusing on fractional horsepower motors and specific winding patterns for prototypes, to large, EASA-accredited service centers equipped for full-scale industrial motor rewinds, dynamic balancing, and comprehensive testing, including surge testing and partial discharge analysis, across a broad spectrum of motor types and sizes.

98 companies·67 emails·92 phones

Company Directory

98 companies nationwide

Westwego, LA

Based in Westwego, LA, A&H Armature Works Inc. provides specialized services related to electric motor armatures. As a U.L. approved facility and ISN member, the company demonstrates commitment to industry standards and safety in its product and service offerings.

Los Angeles, CA

Based in Los Angeles, California, AAA Electric Motor Sales & Service Inc. has repaired and supplied motors and HVACR parts since 1934. They specialize in electric motor repair, including winding, for air conditioning and various industrial applications. The company also provides comprehensive pump rebuilding services and new pump sales.

Buda, TX

Based in Buda, TX, AAW Pumps Motors Controls (Austin Armature Works) is a family-owned company established in 1936. They offer comprehensive industrial equipment solutions and cradle-to-grave services, including motor winding, for water, wastewater, industrial, power generation, and building services.

Alexandria, VA

Based in Alexandria, VA, Alexandria Armature Works Inc provides comprehensive electrical motor and pump repair services. Specializing in rewinding, reconditioning, rebuilding, and repairing AC and DC motors, they also offer on-site preventive maintenance and laser alignment for government and private industries.

Los Angeles, CA

Based in Los Angeles, CA, ABCO Electric Motors has over 30 years of experience providing expert repairs for electric motors, pumps, and electronic services. Specializing in industrial repair, this family-owned business offers on-site service, equipment pickup, and delivery for clients.

Grand Prairie, TX

Based in Grand Prairie, TX, AMERICAN INDUSTRIAL MOTOR SERVICE specializes in comprehensive motor winding and repair services. The company offers electric motor rewinding, DC motor repair, and armature rewinding. They also provide complete machine shop capabilities, including servo and spindle motor repair, alongside dynamic balancing for various industrial applications.

Modesto, CA

Based in Modesto, CA, Andrews Electric Motor and Pump Repair specializes in the comprehensive repair of electric motors and pumps. Their services include motor winding, component replacement, and other essential maintenance to restore industrial and commercial equipment functionality and extend operational life for various clients.

Houston, TX

Based in Houston, TX, ANJ Electric Motor Repair LLC is an electric motor repair shop specializing in industrial and commercial electric motors. They provide comprehensive services including full motor rewinds, bearings, machine work, and reconditioning for various applications.

Based in Hagerstown, MD, Apparatus Repair & Engineering, Inc. specializes in the sales, service, and repair of electric motors. The company operates from a 70,000 square foot facility, providing critical support for commercial, industrial, and utility businesses.

Fresno, CA

Based in Fresno, CA, Arrow Electric Motor Service, Inc. has been a specialist in electric motor rewind, repair, and rebuilding since 1949. Serving the Central Valley, they cater to industries including HVAC, agricultural, and pool & spa. The company also offers sales of electric motors from various leading brands.

Orange, CA

Based in Orange, CA, Baldor Electric Motors, an ABB brand, manufactures industrial electric motors and mechanical power transmission products. The company provides comprehensive services, including motor repair, overhaul, and rewinding for various heavy industrial applications, utilizing its extensive US facilities.

Bay Motor Winding, located in Long Beach, MS, specializes in repairing, rewinding, and warranting motors. They also provide sales and servicing of electric motors and pumps for home and business clients, positioning themselves as a Gulf Coast leader in energy-saving technologies.

Gregory, TX

Based in Gregory, TX, Bradleys Inc. has provided electric motor repair, winding, and load testing services for over 90 years. They offer solutions for small to ultra-large horizontal and vertical electric motors and generators, with capabilities up to 50,000 HP.

Fort Lauderdale, FL

Based in Fort Lauderdale, FL, Broward Armature & Generator specializes in providing services for generators and electric motors. They offer expertise in armature services, troubleshooting, and parts, primarily for marine vessels. The company focuses on precision and speed to ensure smooth operation.

Corpus Christi, TX

Based in Corpus Christi, TX, CD Electric Motor Sales & Services specializes in industrial electric motor repair. Their core business includes troubleshooting, removal, repair, reinstallation, and commissioning of motors. They also offer automation, electrical, millwright, pump, gearbox, fabrication, machining, and crane services.

Bristol, CT

Based in Bristol, CT, Classic Coil Co offers 50 years of expertise in custom precision coil winding. They specialize in encapsulated motor stators and stator assemblies, along with valve, brake, and electromagnetic coils. Serving medical, military, aerospace, and industrial markets, they handle wire sizes from #2 to #58 gauge.

Birmingham, AL

Based in Birmingham, AL, Coil Manufacturing Inc (CMI) specializes in manufacturing custom coils and improving windings for the motor repair industry. They work closely with motor repair centers to address motor failure issues, providing hands-on expertise and delivering quality products across the Americas.

El Paso, TX

Based in El Paso, TX, Coiltec specializes in custom, quick-turn, high-quality form coils for electric motors and repair shops. They offer comprehensive stator rewinding services to meet the demands of their customers. Coiltec provides expertise, equipment, and capacity to deliver essential motor components and repair solutions.

Sacramento, CA

Culver Armature & Motor, based in Sacramento, CA, specializes in AC motor diagnostics and repairs. They provide free motor bench testing and in-house refurbishment services for electric motors, aiming to restore them to like-new condition. The company also offers fast pump repairs and a knowledgeable sales team for various parts.

Corpus Christi, TX

Davenport Electric Motors provides industrial predictive maintenance services and repair solutions for AC & DC electric motors, generators, and mechanical equipment. Their services include testing, repair, and rewinds for small, large, and extra-large motors, ensuring optimal performance and asset reliability for industrial operations.

Camarillo, CA

DC MOTORS SOLUTIONS, INC., based in Camarillo, CA, provides comprehensive services and solutions for DC motors. The company specializes in motor repair, maintenance, and winding, serving industrial and commercial clients. They ensure optimal performance and longevity for a wide range of DC motor applications.

Vineland, NJ

Based in Vineland, NJ, "D" Electric Motors, Inc. provides expert electric motor and pump overhaul and repair services. Their diversified electrical and mechanical service company features a dedicated rewind department, alongside a full machine shop. They offer comprehensive repair for motors, pumps, gearboxes, blowers, and generators.

Merced, CA

Based in Merced, CA, Dom’s Electric Motor specializes in sales, service, repair, and complete rewinding of rotating electrical equipment. They offer reconditioning for AC/DC motors, pumps, blowers, and gearboxes. Serving commercial, industrial, municipal, and agricultural clients, they provide 24/7 emergency service and maintain an in-house machine shop.

Glen Ellyn, IL

Based in Glen Ellyn, IL, Dreisilker Electric Motors Inc. provides comprehensive electric motor repair and reliability services. The company specializes in maintaining and restoring various types of electric motors, ensuring optimal performance for industrial and commercial clients across the United States. They offer expert winding services as part of their repair solutions.

Cleveland, OH

Based in Cleveland, OH, Electric Control and Motor Repair Service, Inc. provides comprehensive repair and maintenance services for electric motors and associated control systems. Their expertise includes motor winding, ensuring reliable operation for industrial and commercial clients.

Howell, MI

Based in Howell, MI, Electric Apparatus Company develops and manufactures advanced-technology AC induction motors and generators for special purpose applications. They serve diverse industrial sectors, including desalination, automotive, aerospace, tunnel-boring machines, chemical and food process, and large-vehicle traction drives with custom solutions.

Bakersfield, CA

Based in Bakersfield, CA, Electric Motor Works Inc specializes in comprehensive electric motor services, including repair, rebuilding, and rewinding. The company supports industrial and commercial clients with solutions to maintain and extend the life of their electric motors.

Clearwater, FL

Based in Clearwater, FL, Electric Motors and Lift Station Services Inc. provides comprehensive electric motor repair services, including rewinding, bearing replacement, and dynamic balancing. The company also specializes in pump repair and lift station services, offering sales of pumps and motors to industrial, commercial, and municipal clients.

Gilroy, CA

Based in Gilroy, CA, EMS Electric Motor Service offers comprehensive solutions for electric motors and controls. The company provides repair and maintenance services, which typically include motor winding, for various motor types, including gear motors. Additionally, they are an authorized distributor of Bodine Electric products, serving industrial clients with motor and control expertise.

Whittier, CA

Based in Whittier, CA, Eurton Electric specializes in comprehensive electric motor repair and rewinding services. Since 1933, the family-owned company expertly handles armatures, field coils, motors, and stators. They leverage extensive employee expertise to rebuild and rewind various components, offering a reliable solution for complex motor winding needs.

Kissimmee, FL

Based in Kissimmee, FL, Florida Armature Works, Inc. is an electric motor and pump repair center. Established in 1993, they specialize in repairing AC electrical motors up to 800 HP, along with submersible, split case, and vertical turbine pumps. The company provides comprehensive electrical apparatus repair services.

Cleburne, TX

Based in Cleburne, TX, Gatewood Electric specializes in electric motor repair and rewinding services. With over 70 years of experience, they handle motor fans, ventilation motors, and motor coil needs. Their state-of-the-art facility provides professional, cost-effective repairs for all motor sizes, offering alternatives to new purchases.

Sacramento, CA

Based in Sacramento, CA, Herold & Mielenz, Inc. specializes in industrial motor rewind and repair services. The company provides expertise in industrial motors and controls, offering comprehensive repairs, equipment sales, and field services to support various industrial applications.

Houston, TX

Houma Armature Works provides comprehensive repair, maintenance, and new installation services for industrial motors, generators, and control systems. With facilities in Houma, LA, and Houston, TX, they offer 24/7 field support and extensive parts. The company serves diverse sectors including offshore drilling, refineries, power generation, and manufacturing.

Corpus Christi, TX

Based in Corpus Christi, TX, Industrial Electric Motors, Inc. specializes in comprehensive electric motor, pump, and generator repair services. Leveraging decades of experience, they handle repairs for fractional to large electric motors, providing fast turnaround times and high-quality service for industrial and commercial clients.

Lone Star, TX

Based in Lone Star, TX, INDELECT provides expert repair and rebuilding services for electric motors, induction heating coils, transformers, pumps, gearboxes, and lifting magnets. Serving industry since 1975, they emphasize quality and prompt service, offering 24-hour availability for emergency needs.

Tampa, FL

Integrated Power Services (IPS) provides comprehensive electric motor and generator services, including winding, repair, and field support. Serving heavy industry across North America, the UK, and the Caribbean, they offer tailored solutions for reliable power generation systems, encompassing electromechanical equipment and power management.

Villa Park, IL

Based in Villa Park, IL, International Winding Inc. specializes in rewinding and rebuilding high-quality armatures for D.C. and A.C. motors, stators, and rotors. The company also builds new armatures on request. They focus on precision craftsmanship, attention to detail, and customer satisfaction for their industrial clients.

San Leandro, CA

Based in San Leandro, CA, Koffler Electrical Mechanical Apparatus Repair, Inc. offers comprehensive electrical mechanical repair and motor sales. The company specializes in rewind and repair services for electrical refurbishment, including professional motor winding and rewinding. They serve a diverse range of industrial customers on the West Coast.

Cincinnati, OH

Based in Cincinnati, OH, Matlock Electric Company Inc. provides sales, service, and professional asset management for electrical systems and motors. With extensive industry knowledge since 1920, they offer comprehensive repair and new equipment solutions, backed by a 3-year warranty for industrial clients.

Mission Hills, CA

Based in Mission Hills, CA, Mission Electric Motor provides comprehensive repair and sales for electric motors and pumps. Specializing in motor diagnostics and restoration, their services include addressing winding issues. They offer free estimates and warranty all repairs for commercial and industrial customers.

Monticello, MN

Based in Monticello, MN, Motor Shop USA offers comprehensive electric motor sales and repair services. Specializing in various motor brands like Baldor, ABB, and GE, they also provide pump, gearbox, and air compressor repairs. Committed to quality, they ensure reliable workmanship since 1959, using premium materials and equipment.

Dayton, OH

Based in Dayton, OH, M & R Electric Motor Service, Inc. offers sales, service, and repair of electric motors, pumps, and power tools. With over 75 years of experience, they provide cost-effective commercial and residential motor repair solutions, including DC servo repair. They are a proud EASA member.

Brownsville, TX

Based in Brownsville, TX, National Electric Coil specializes in comprehensive large motor and generator repair, rewind, and reconditioning services. They also manufacture high-voltage coils and custom winding kits for various electrical rotating machines, serving industrial clients across sectors like power generation and mining.

Somerville, NJ

New Jersey Electric Motors, Inc. is a family-owned company, founded in 1975, specializing in electric motor repair and refurbishing up to 1,000HP. They offer motor winding services for industrial and commercial clients. Serving marine, railroad, and state organizations, they are an authorized service center for WEG and Leeson.

Houston, TX

Based in Houston, TX, North Side Electric Motors offers comprehensive electrical apparatus repair, sales, and service. The company's state-of-the-art facility enables in-house repairs and scheduled maintenance, serving industrial and commercial clients with expertise in electric motor needs, including winding services.

Irving, TX

Based in Irving, TX, Omega Industrial Repair Inc. specializes in comprehensive industrial motor and servo motor repairs. They provide expertise in the domain of industrial motor repair, often including winding services, alongside hydraulic, pneumatic, and industrial electronic repairs, serving various industrial clients with a focus on quality and efficiency.

Palo Alto, CA

Based in Palo Alto, CA, Palo Alto Electric Motor Corp specializes in the repair, service, and parts of electric motors and pumps. With over 45 years of experience, they expertly rewind motors and pumps up to 1,000HP. The company offers fast turnaround service, advanced testing, and high-level workmanship.

Cedar Hill, TX

Based in Cedar Hill, TX, Phase Electric Motors LLC specializes in the repair and sales of AC and DC electric motors, handling units up to 10,000 pounds. Founded in 1985, they offer diverse electrical sales and repair services for industrial accounts, including 24/7 emergency support.

Mishawaka, IN

Based in Mishawaka, IN, Precision Electric, Inc. offers comprehensive electric motor sales and repair services. They specialize in AC and DC motor rewinding, alongside generator, pump, and gearbox repair. The company provides dynamic balancing, machining, and welding for diverse industrial applications and motor maintenance needs.

Channelview, TX

Based in Channelview, TX, Rotating Equipment Repair LLC provides comprehensive repair services for industrial rotating equipment. They specialize in motor, pump, and gearbox repair, offering expert motor rewinding, winding upgrades, and stator/rotor rewinds. They also perform balancing, machining, and predictive maintenance for industrial clients.

Sacramento, CA

Based in Sacramento, CA, Rosenau Motors has provided electric motor winding and repair services since 1977. They specialize in single and three-phase motor rewinding (1/8 - 400hp), electric motor repairs, pump and gearbox repairs. The company also offers mechanical work, motor sales, and comprehensive diagnostic testing.

San Antonio, TX

Based in San Antonio, TX, San Antonio Armature Works, Inc. specializes in electro-mechanical repair and remanufacturing of AC and DC electric motors and generators. A rotating equipment specialist, they provide comprehensive sales, service, rebuilding, dynamic balancing, and motor rewinding, including VPI processing, for industrial applications.

Belle Chasse, LA

Based in Belle Chasse, LA, Scott Armature LLC specializes in electro-mechanical repair and remanufacture of AC and DC electric motors and generators. Founded in 1975, the company offers in-house and in-field services for rotating equipment, ensuring maximum uptime for its Southern Louisiana customer base.

Orlando, FL

Stewart's Electric Motor Works provides comprehensive electric motor services from its Orlando, FL facility. As an 'Electric Motor Works,' the company specializes in critical repair, maintenance, and likely winding services for various industrial and commercial applications, ensuring optimal performance and longevity for client equipment.

Irving, TX

Based in Irving, TX, A-1 Servomotor Repair provides high-tech electromechanical repair services for a wide range of industrial motors. Operating from a 12,000 square foot facility, the company specializes in AC and DC servos, spindles, steppers, and regular AC/DC motors. They service over 600 brands, including Fanuc, Mitsubishi, Siemens, and Kollmorgen Inland.

Placentia, CA

Singer Electric Motors-Generators provides comprehensive electric motor, generator, and pump repair services. Based in Placentia, CA, the company specializes in motor winding, dynamic balancing, and gearbox repair, serving industrial and commercial clients in Southern California for over 70 years.

Oxnard, CA

Based in Southern California, Servo Motor Technologies specializes in the complete refurbishment of high-performance AC and DC servo motors, as well as spindle motors. Serving industries from aerospace to packaging and CNC OEMs, they provide comprehensive repair services for various manufacturing applications.

Los Angeles, CA

Superior Electric Motor Services, based in Los Angeles, CA, specializes in comprehensive electric motor repair and maintenance, including professional motor winding for AC/DC motors, pumps, and gearmotors. The company also sells new electro-mechanical equipment, with an extensive inventory of motors, controls, and power transmissions.

Based in Irwin, PA, Traction Motor Service (TMS) is a full-service center specializing in electro-mechanical repairing, rebuilding, rewinding, and re-manufacturing of AC/DC motors and generators. Serving railroad, transit, industrial, and mining sectors, TMS rebuilds traction motors and alternators to meet or exceed OEM specifications.

Carrollton, TX

Based in Carrollton, TX, Texas Electric Motors Repair and Sales, LLC specializes in comprehensive AC and DC motor repair services. The company offers in-shop and on-site repairs for electric motors, pumps, air compressors, and electromagnets. They provide prompt quotes and efficient service, aiming for a 3-5 day standard turnaround with decades of experience.

Belle Chasse, LA

Based in Belle Chasse, LA, Universal Coil, Inc. manufactures a variety of electromagnetic coils for diverse applications. With over 30 years of experience, the company specializes in producing high and low voltage coils, transformer coils, reactor coils, and motor and generator coils for industrial clients.

Ontario, CA

Based in Ontario, CA, USA Motor Repair provides comprehensive industrial AC and DC motor repair, rebuilding, and reconditioning. Their technicians, with over 60 years of combined experience, serve demanding sectors such as plastics, steel mills, mining, and wastewater treatment, offering 24/7 emergency service and nationwide pickup.

Witmer Motor Service, LLC, based in New Holland, PA, specializes in electric motor repair and rewinding services for motors up to 300hp. They also provide electric motor sales, power tool sales and service, and a wide range of motor parts, bearings, and industrial components.

Archbold, OH

Based in Archbold, OH, Wyse Electric Motor Repair Inc. provides comprehensive electric motor repair and quality rebuilds. With 69 years of experience, they offer emergency repair services for industrial clients, alongside pump and gear reducer repairs and sales. They are also a WEG stocking distributor.

Norton, OH

Based in Norton, OH, Akron Industrial Motor Sales & Service, Inc. provides motor repair, sales, and service. They offer full-service AC and DC motor rewinding, handling single-phase and specialty windings like magnet tables and various coils. As an EASA member, they serve industrial customers in the Akron/Canton/Cleveland area.

Baton Rouge, LA

Based in Baton Rouge, LA, Industrial Electric Motor Service, Inc. specializes in comprehensive services for industrial and commercial electric motors. They offer expert motor rewinding, repair, and rebuilding, alongside dynamic balancing, pump and gearbox repair. This ensures optimal performance and extended lifespan for critical machinery across various industries.

Stockton, CA

Ace Electric Motor & Pump Co., based in Stockton, CA, provides comprehensive industrial and commercial electric motor and pump services. Specializing in electric motor rewinding, repair, and servo motor repair, the company also offers industrial pump repair, electrical contracting, and precision machining services. They provide both on-site and worry-free maintenance solutions.

Sun Valley, CA

Based in Sun Valley, CA, All Electric Motors is a family-owned business specializing in the rewinding and repair of electric motors and pumps. With over 40 years of experience, they provide 24/7 service and maintain a large inventory of new and used motors, OEM parts, and accessories.

Cleveland, OH

Based in Cleveland, OH, Al's Electric Motor Service specializes in comprehensive electric motor repair and rewinding for AC and DC motors. With 60 years of experience, they also offer rebuilding services for pumps, gear reducers, and various blowers, catering to industrial clients in northeast Ohio.

Lakeland, FL

Burnett Electric Motor LLC, based in Lakeland, FL, specializes in comprehensive electric motor services including sales, repair, rewinding, and rebuilding. They cater to industrial and commercial clients, offering expert pump and generator repair, service calls, troubleshooting, vibration analysis, and dynamic balancing to ensure equipment longevity and performance.

Azusa, CA

Based in Azusa, CA, California Electric Motor Source provides specialized electromechanical services for electric motors. The company offers comprehensive repair services and electrical troubleshooting, serving commercial and industrial clients. Their expertise in motor maintenance and repair ensures optimal performance and operational efficiency.

Canoga Park, CA

Based in Canoga Park, CA, Coast Motor Supply provides comprehensive electric motor sales, parts, and repair services for industrial applications. Their expertise includes motor rewinding, rebuilding, balancing, shaft repair, and bearing replacement, ensuring optimal performance for various motor types.

Houston, TX

Based in Houston, TX, Commercial Armature Works specializes in electric motor sales and comprehensive rebuild services. They offer expertise in repairing and restoring industrial and commercial motors, including armature winding, to ensure optimal performance and longevity for various applications.

Fontana, CA

Based in Fontana, CA, C.P. Generator Fontana Alternators and Starters specializes in the sales, repair, and rebuilding of alternators, starters, and generators. They offer comprehensive rewinding services for various applications, including automotive, commercial, industrial, marine, and heavy-duty equipment.

Signal Hill, CA

Based in Signal Hill, CA, Delta Motor Co., Inc. is an Electrical Rotating Apparatus Specialist, providing service and repair for all types of motors. As an authorized UL service center, the company offers comprehensive motor maintenance for diverse industries, ensuring quality services since 1958.

Gardena, CA

Based in Gardena, California, Dynamic Industrial Electric Motors Inc. provides comprehensive electric motor repair, sales, and service. They specialize in motor rewinding and redesign, including stator, armature, and custom coil winding, alongside pump and gearbox repair, dynamic balancing, and field services for industrial clients.

Owensboro, KY

Based in Owensboro, KY, Electrical Equipment Repair is an EASA Certified Shop established in 1991. They provide comprehensive electrical equipment repair, including motor winding, for industrial, commercial, and residential clients across Western Kentucky, Southern Indiana, and nationwide.

Visalia, CA

Based in Visalia, CA, Electric Motor Shop specializes in comprehensive electric motor repair services. They provide expert motor rewinding, pump repair, and generator repair, ensuring optimal performance for industrial and commercial clients. Additional capabilities include precision balancing and custom fabrication.

Houston, TX

Based in Houston, TX, Electric Motors Inc. provides comprehensive electric motor repair and rewinding services. Since 1970, they have specialized in maintaining and rehabilitating a wide range of electric motors, pumps, and gearboxes for industrial applications. Their expertise includes precise motor winding and refurbishment.

Largo, FL

Genesis Electric Motors Inc. provides comprehensive electric motor services, including repair, rebuilding, and rewinding of various motor types. The company also offers pump repair and sales of new and reconditioned electric motors, serving industrial and commercial clients from its Largo, Florida facility.

Canton, OH

Based in Canton, OH, Hannon Electric Motor & Service specializes in electric motor repair and rewinding services. The company also provides transformer field service, control system solutions, and new equipment sales. Operating from multiple facilities, including Canton, Cleveland, and Pittsburgh, they directly serve industrial clients with their own workforce.

Tulsa, OK

Based in Tulsa, OK, Industrial Motor Services, LLC provides AC and DC motor rewinding and comprehensive pump repair services. As an EASA member, the company offers full machine shop capabilities, dynamic balancing, on-site laser alignment, and vibration analysis for industrial clients.

Santa Cruz, CA

Based in Santa Cruz, CA, John's Electric Motor Service specializes in expert repair for electric motors, pumps, and various equipment. With over 40 years of experience, they provide comprehensive service, including aspects related to motor winding, for industrial and commercial clients.

San Antonio, TX

Electric Motor Rewind SA specializes in comprehensive repair services for industrial AC/DC motors, pumps, gearboxes, and generators, often providing a 24-hour turnaround. They focus on high-quality repairs, including winding, for diverse sectors such as oil & gas, mining, marine, and paper mills. The company also offers new equipment sales and dynamic balancing.

Naples, FL

Based in Naples, FL, Naples Armature Works provides repair and winding services for a diverse range of electric motors. They specialize in fan, blower, pump, and special purpose motors, offering armature maintenance and supplying power transmission components. The company serves industrial and commercial clients.

Port Richey, FL

Based in Port Richey, FL, Nieman Electric Motor Inc offers sales and comprehensive servicing for diverse motor types. They specialize in solutions for sewage pumps, lift stations, pool pumps, well, and irrigation motors, serving industrial, commercial, and residential clients with quality and price in mind.

Birmingham, AL

Based in Birmingham, AL, Precision Coil and Rotor is a U.S. industrial service company. They manufacture and rebuild component products for rotating electrical machines up to 13.8 kV. Their core business is form coil manufacturing and associated services for AC and DC electric motors and generators, specializing in diverse winding systems.

Francisville, LA

Red Stick Armature Works provides comprehensive electric motor repair and rewinding services for industrial and commercial clients. Specializing in armature rewinding, pump repair, and custom coil winding, the company ensures efficient and reliable motor performance from their St Francisville, LA shop.

Garden Grove, CA

Santa Fe Coil specializes in the manufacturing and restoration of electric coils, including solenoid, switchgear, and custom designs. The company offers services for circuit breaker motors, armatures, and fields, alongside transformer work and coil duplication for obsolete components, serving various industrial applications.

Irving, TX

Based in Irving, TX, Shermco Industries Inc. provides full-service electrical system maintenance, engineering solutions, and NETA accredited testing. The company specializes in motor and generator repair services, supporting mission-critical power for clients across various industries with over 50 years of experience.

Tampa, FL

Southern Winding Service Inc, based in Tampa, FL, specializes in comprehensive DC motor rebuild and restoration services. They conduct complete disassembly, detailed inspection, electrical testing, and replace worn components. The company expertly rewinds armatures using precision machines and offers customized form coil rewinds, ensuring optimal motor performance.

Abilene, TX

Based in Abilene, TX, Southwest Enterprises is a full-service electric motor repair shop. They specialize in comprehensive AC and DC motor winding, dynamic balancing, and pump and gearbox repair. With over 40 years of experience, the company also provides sales of new electric motors.

Abilene, TX

Based in Abilene, TX, Texas Oil Electric Inc. provides comprehensive electric motor sales and repair services, including full rewinds for AC motors from 5HP to 600HP. They offer 24/7 emergency support, generator sales and repair, pole line construction, and oil field services to commercial and industrial clients.

Auburn, CA

All Electric Motor, located in Auburn, CA, is a service provider focused on electric motor operations. The company likely offers comprehensive motor repair, maintenance, and essential motor winding services for industrial and commercial clients.

Austin, TX

Based in Austin, TX, Hamilton Electric Works, Inc. provides comprehensive electric motor repair, including specialized motor winding and rewinding services. They expertly troubleshoot and restore motors, generators, and pumps of all types and sizes. Serving industrial, commercial, and municipal clients, the company offers essential repair solutions and preventive maintenance programs.

San Antonio, TX

Based in San Antonio, TX, Massengale Armature, Inc. specializes in AC and DC motor rewinding and repair. They are a UL certified repair center for motors and generators, offering comprehensive services for electrical and mechanical apparatuses. A full-service machine shop supports industrial clients from HVAC to large applications.

New Ulm, MN

Based in New Ulm, MN, Windings, Inc. specializes in providing expert motor winding services and solutions. The company offers design, manufacturing, and related services for various motor applications, catering to industrial and commercial clients with a deep understanding of motor technology.

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How to Choose a Company

  • Verify the supplier performs comprehensive surge testing and core loss testing on rewound motors to ensure winding integrity and lamination stack health, especially critical for maintaining post-repair efficiency.
  • For critical applications or VFD-driven motors, confirm they specify and apply an appropriate inverter duty insulation system, ideally rated UL 1446, to withstand voltage spikes and premature breakdown.
  • Inquire about their Vacuum Pressure Impregnation (VPI) capabilities, including resin type and cure process, as inadequate VPI can drastically reduce the lifespan of form-wound or random-wound coils in harsh operating conditions.
  • For new motor windings or large-scale production, ensure they can demonstrate adherence to NEMA MG 1 standards for performance and efficiency, and provide data on insulation class (e.g., Class F or H) and thermal limits.
  • Be wary of suppliers who offer significantly lower prices without detailing their insulation materials, VPI process, or comprehensive post-winding testing protocols; this often indicates shortcuts that compromise long-term motor reliability.
  • For DC motor applications, confirm their expertise in commutator repair, armature winding, and bar-to-bar resistance testing, as these require different specialized skills than AC motor stators.

Frequently Asked Questions

Does rewinding a motor always reduce its efficiency?

Not necessarily, but it's a critical concern. A high-quality rewind, performed by an experienced shop following EASA AR100 guidelines, can often maintain or even slightly improve original efficiency. The key is ensuring the new windings use magnet wire of equal or better quality, proper slot fill, and that the core laminations are not damaged during the stripping process (which requires core loss testing).

What is the difference between random-wound and form-wound coils, and when is each used?

Random-wound coils are typically used in smaller, lower-voltage motors where wire is randomly placed into slots. Form-wound coils, found in larger, higher-voltage motors, are pre-formed with precise shapes and often wrapped with multiple layers of insulation before being inserted, allowing for higher dielectric strength and better slot fill. Your motor's original design dictates which type is appropriate for a rewind.

How important is Vacuum Pressure Impregnation (VPI) for motor windings?

VPI is extremely important, especially for motors operating in harsh or humid environments, or those subject to vibration. It involves submerging the wound stator or rotor in a resin and then applying a vacuum to draw out air and moisture, followed by pressure to force resin into every void. This process creates a solid, moisture-resistant, and mechanically stable winding, significantly extending motor life.

What specific tests should a motor winding company perform on my motor?

A thorough evaluation should include basic resistance tests, insulation resistance (Megger) tests, polarization index (PI) tests, and especially critical, surge comparison testing to detect turn-to-turn insulation faults. For rewound stators, a core loss test is vital to ensure lamination integrity. For rotors, dynamic balancing is crucial, and for DC motors, bar-to-bar resistance testing of the commutator is a must.

What insulation class do I need for my motor winding, and why does it matter?

Insulation class (e.g., Class F, H) defines the maximum allowable operating temperature for the winding insulation system. Using a higher class than specified can provide a thermal buffer, increasing motor longevity, especially if it operates in high ambient temperatures or is frequently overloaded. It's crucial to match or exceed the original insulation class and confirm the magnet wire, slot liners, and lead insulation all meet this rating to avoid premature failure.

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