SUPERIOR-LIDGERWOOD-MUNDY CORP

SUPERIOR-LIDGERWOOD-MUNDY CORP specializes in the design, manufacture, and overhaul of heavy-duty mechanical systems for defense, maritime, and federal infrastructure applications. Their core expertise lies in overhead traveling crane, hoist, and monorail system manufacturing, with proven proficiency in winch assembly, brake actuator fabrication, and precision spring manufacturing. The contractor delivers mission-critical components such as double-drum winches with hydraulic power units, centerline winch brake actuators, and helical compression springs, often tailored for harsh operational environments. They also provide engineering services for gantry winch commissioning and perform complex repairs on shipboard and land-based lifting systems, demonstrating deep familiarity with fluid power actuation, metal valve systems, and brake assembly integration. Their technical edge stems from precision metal fabrication, mechanical system integration, and adherence to military and federal engineering standards. The company maintains a consistent relationship with the Department of Homeland Security, delivering winch repairs, brake assemblies, and lifting system components for maritime and border infrastructure. They also support the Department of Defense and Department of the Interior with crane and hoist systems for logistics and facility operations, while providing specialized engineering services to NASA for gantry equipment validation. These engagements reflect a pattern of trusted, mission-focused support for high-reliability mechanical systems in critical government operations. Their primary industry focus is on NAICS 333923—overhead crane and hoist manufacturing—complemented by shipbuilding and repair (336611), fluid power actuation (333995), and spring manufacturing (332613). This positions them as a niche supplier of ruggedized mechanical subsystems for federal maritime, transportation, and defense assets. As a small business structured as a 2L entity based in Superior, Wisconsin, SUPERIOR-LIDGERWOOD-MUNDY CORP operates without federal certifications but leverages localized manufacturing capabilities to serve federal procurement channels with agile, precision-engineered solutions.