Navy Motors

Ward Leonard MIL-Spec motors are designed to meet MIL-M-17059 and MIL-M-17060 specifications and are manufactured to endure exposure to combat, rigorous shock, and saltwater for decades of use. Constructed with nodular cast iron, these rugged motors feature a vacuum pressure impregnation (VPI) epoxy-sealed insulation system that delivers superior electrical insulation and water resistance. Ward Leonard motors also meet Grade-A shock and vibration performance standards that are frequently required in Naval motor applications. Our motors are NAVSEA-approved in painting and welding, and meet the NAVSEA-spec for corrosion resistance.

Our sealed insulation system complies with the requirements of MIL-STD-2037 to enable our motors to withstand water submersion for extended periods of time. The use of precision components and exacting machining practices make possible our very low airborne and structure-borne noise level performance that are of extreme value in naval vessel applications. Our motors are designed to have service lives of 30 years and have been proven with performance in the U.S. Navy fleet to exceed this standard consistently.

Ward Leonard also designs and manufactures commutator-type DC motors per MIL -M-17413A that are primarily used on U.S. Navy surface combatants and submarines. These applications demand rugged construction along with low noise performance characteristics to ensure the effectiveness of our naval forces in combat situations. These DC motors complement our full line of rotating equipment solutions for DoD applications that include fractional and integral horsepower AC induction motors and motor-generator sets for frequency conversion.

All Ward Leonard MIL-Spec motors are subjected to MIL-Standard Testing including: MIL-S-901D for Shock Testing, MIL-STD-167 for Vibration Testing, and MIL-STD-740 for Noise Testing.

Ward Leonard motors are used by a wide range of U.S. and International Defense organizations, including the U.S. Navy, U.S. Army, U.S. Coast Guard, Military Sealift Command, Canadian Department of National Defence, UK Ministry of Defence, Australian Ministry of Defence.

With more than 120 consecutive years of supplying the U.S. Navy, a broad AC MIL-Spec induction motor product offering, and customized engineering solutions, Ward Leonard is well-equipped to provide superior power and reliability in the most critical naval applications.

Ward Leonard also designs and manufactures highly reliable military grade motor-generators (MG sets) that are used in hundreds of DoD systems, such as the Navy’s Ohio and Los Angeles-class submarines, Nimitz-class aircraft carriers, and radar systems. Ranging from 5kW to 400kW at 400Hz, every MG set is built to perform in severe conditions and meet strict military specifications.

Through our purchase of Tech Systems and ElectroDynamics(EDY) division of Electric Boat, we also have the technology, electromechanical capabilities, blueprints and skill set to refurbish legacy equipment solutions, or design and build new systems.

MIL-Standard Specifications & Testing Include:

  • MIL-M-17060 for Integral HP motors
  • MIL-M-17059 for Fractional HP motors
  • MIL-S-901D for Shock Testing
  • MIL-STD-167 for Vibration Testing
  • MIL-STD-740 for Noise Testing
  • MIL-STD-2037 for Sealed Insulation Systems

Compressor Motors

Noise Quiet Motors

Pump Motors

Servo Motors

Winch Motors