Founded in 1946 by a U.S. Navy engineer and a Washington, D.C., businessman, Marvel Manufacturing makes precision static-balancing equipment for aircraft rotors and propellers. Now a fourth-generation family-owned company, it developed its original flexible-suspension balancing method for military and commercial aviation and continues to support its proprietary arbor kits with recalibration and repair services from its Edmond, Oklahoma, facility.
The Balancing Company, IncFounded in 1968 with one balancing machine, The Balancing Company now provides mechanical balancing and spin testing for rotating components from its 54,000-square-foot Vandalia facility. Still family-owned and operated, the company handles work ranging from tiny parts to 50,000-pound assemblies and sends field technicians across the United States to balance machinery in place. Its 27-person operation includes 32 balancing machines, eight spin-test chambers, and an ISO 9001:2015-certified quality system.VANDALIA, OH
House of BalanceHouse of Balance is a second-generation, family-operated Maryland business specializing in vibration analysis and dynamic balancing for rotating equipment. Established in 1965 after starting as a race-car speed shop, it now combines field service with a 7,000-square-foot motor, pump, and machine shop. Its working owners and small team of trained technicians serve customers across the Mid-Atlantic and beyond, handling equipment at the plant or in-house.ELKRIDGE, MD
Vibration Specialty CorporationFounded in 1918 by inventor Nicholas W. Akimoff, Philadelphia’s Vibration Specialty Corporation helps industrial operators prevent machinery failures through vibration analysis, predictive maintenance, and precision rotor balancing. Its early work balancing Thomas Edison’s turbines and Henry Ford’s Model T crankshafts grew into modern condition-monitoring technology, including in-house instruments and a substantial portfolio of industrial IoT patents. VSC’s balancing center handles rotors from grams to 20,000 pounds, while its engineers also provide on-site and remote diagnostics for rotating equipment worldwide.PHILADELPHIA, PA
Aeronautical Instrument & Radio Company (AirCo)A three-generation family-owned business established in 1948, AirCo is a woman-owned small manufacturer serving military and commercial aviation customers from the United States and abroad. It is known for sustaining aviation equipment beyond the original sale, with repair and calibration support for both newly made and previously manufactured units. AirCo maintains ISO 9001:2015 certification and an FAA-certified repair station.BOHEMIA, NY