MPB CORPORATION

MPB CORPORATION specializes in the precision manufacturing of ball and roller bearings for defense and aerospace applications, with a primary focus on mission-critical components used in military aircraft, ground vehicles, and propulsion systems. Their technical expertise lies in producing high-tolerance, load-bearing assemblies including thrust bearings, annular bearings, and other specialized rolling-element components that meet stringent military specifications. The company demonstrates deep proficiency in metallurgical processing, surface hardening, precision grinding, and quality assurance protocols required for extreme operational environments. Their ability to deliver custom-engineered bearing solutions under tight tolerances positions them as a trusted supplier for defense systems requiring reliability under high stress, vibration, and thermal extremes. The contractor maintains a consistent and primary relationship with the Department of Defense, supplying bearings and bearing-related components for aviation, ground vehicle, and weapon system platforms. DLA Aviation is a frequent customer, consistently procuring bearing assemblies for aircraft maintenance and sustainment programs, indicating a long-standing role in the defense logistics supply chain. Their work supports the lifecycle management of critical rotating machinery across multiple military platforms. MPB CORPORATION’s industry focus centers on NAICS 332991—Ball and Roller Bearing Manufacturing—where they serve as a niche producer of defense-grade bearings, complemented by limited activity in aircraft engine and motor vehicle parts manufacturing. This vertical specialization enables them to operate as a Tier 2 supplier within the defense industrial base, focusing on component-level precision manufacturing rather than system integration. As a small business structured as a 2L entity based in Lebanon, New Hampshire, MPB CORPORATION operates without federal certifications but maintains a focused geographic footprint aligned with defense supply chain needs. Their positioning is that of a specialized, technically proficient manufacturer serving the DoD’s enduring demand for high-reliability bearing components.