Custom-engineered AC & DC motors up to 20,000 HP, factory recertified units, and OEM replacement components for critical global operations.
For more than 120 years, Louis Allis has stood as the definitive industry leader in custom electric motor engineering, remanufacturing, and application-specific solutions. Operating from our state-of-the-art ISO 9001:2015 certified facility in Warrior, Alabama, USA, we produce heavy-duty rotating electrical equipment capable of withstanding the world's most severe operational environments.
When off-the-shelf electric motors fail to meet unique spatial, thermal, mechanical, or electrical specifications, global industrial procurement professionals turn to Louis Allis. From continuous high-torque grinding duty in mining facilities to explosive marine and petrochemical environments, our custom-built motors up to 20,000 HP deliver uncompromised reliability and optimal operational lifecycle efficiency.
Discover our core product offerings engineered to minimize unplanned downtime, increase thermal efficiency, and guarantee seamless facility integration.
Custom OEM
Purpose-built AC and DC electric motors engineered from the ground up for extreme industrial applications including ball mills, crushers, dredges, induced draft fans, kiln drives, and heavy pulverizers.
Rapid Delivery
Pre-engineered and meticulously re-manufactured electric motors that provide instant relief for emergency outages. Tested under full load conditions and backed by full factory operational warranties.
Genuine OEM
Original OEM replacement parts, form-wound coils, specialized armatures, heavy shafts, commutators, end brackets, and bearing assemblies precision-engineered for Louis Allis and all legacy motor brands.
Louis Allis specialty motors are individually rated and engineered to align with exact international duty requirements.
| Application Type | Horsepower (HP) | Voltage Range | Primary Features & Enclosures |
|---|---|---|---|
| Ball Mill & Crusher Duty Motors | 500 HP – 15,000 HP | 2,300V – 13,800V | High starting torque, heavy-duty forged shafts, reinforced end bells, TEFC/WPII enclosures. |
| Induced Draft (ID) Fan Motors | 300 HP – 8,000 HP | 460V – 6,900V | Variable frequency drive (VFD) optimized, low-vibration rotor balance, insulated bearings. |
| Bow Thruster & Marine Duty Motors | 200 HP – 10,000 HP | 460V – 6,600V | MIL-STD-2037 Navy sealed windings, corrosion-resistant marine coatings, ABS & DNV compliance. |
| Large Industrial DC Motors | 100 HP – 10,000 HP | 240V – 1,000V DC | Heavy-duty commutators, compensated windings, forced blower cooling, exact drop-in footprints. |
| Vertical & Horizontal Pump Motors | 250 HP – 12,000 HP | 460V – 13,800V | High-thrust spherical roller bearings, non-reverse ratchets, weather-protected WPII / TEAAC housings. |
Consult with our lead application engineering specialists today for custom torque curves, dimensional drawings, and formal quotes.
Yes. Our engineering division specializes in reverse engineering obsolete, vintage, or international motor footprints. We match mounting bolt holes, shaft heights, conduit box locations, and electrical characteristics to ensure seamless drop-in replacement without expensive foundation modifications.
All motor manufacturing and repair operations take place in our Warrior, Alabama facility under strict ISO 9001:2015 certification. Depending on client specs, our motors meet NEMA MG1, IEEE 841, EASA AR100, MIL-SPEC, UL, ABS, and ATEX standards.
Custom new builds are engineered from raw materials to precise user specifications. Factory recertified motors are existing heavy-duty units completely remanufactured, load-tested, and verified to meet or exceed original factory performance standards, providing a rapid solution for urgent equipment lead times.
International procurement managers can click the "Inquire Now" button on this page to initiate immediate contact with our engineering sales desk for international freight logistics, voltage adaptations (50Hz/60Hz), and comprehensive technical proposals.
