OVERTON CHICAGO GEAR CORPORATION

Overtown Chicago Gear Corporation specializes in the design and manufacturing of high-precision industrial gear systems and associated engineering solutions for defense applications. The company leverages deep expertise in gear geometry, housing design, and mechanical power transmission systems to deliver customized gearbox assemblies and engineered packages that meet stringent military performance standards. Their technical capabilities include CAD-based mechanical design, tolerance stack-up analysis, material selection for high-load environments, and the translation of functional requirements into manufacturable hardware—particularly for ruggedized, high-speed drive systems used in military platforms. Their ability to bridge engineering design with production-ready gear manufacturing represents a key differentiator, enabling end-to-end solution delivery without reliance on third-party vendors. The contractor has established a consistent relationship with the Department of Defense, delivering both engineering design services and physical gear system components for mission-critical applications. Work includes the development of customized gearbox housings and complete engineering packages that support the integration of high-speed drives into armored vehicles, aerospace systems, or naval propulsion units, indicating a focus on land and possibly maritime defense platforms. Overtown Chicago Gear Corporation operates primarily under NAICS 333612, which encompasses the manufacture of industrial speed changers and high-speed gear drives, and NAICS 541330 for engineering services—reflecting a dual focus on both physical component production and the technical design work that precedes it. This positions them as a niche supplier in the defense industrial base, serving specialized segments requiring tightly integrated mechanical systems. As a small business structured as a 2L entity based in Addison, Illinois, the company maintains a focused, agile footprint with no federal certifications on record. Their market positioning centers on technical precision and design-manufacturing integration for defense-grade mechanical systems, serving as a trusted partner for specialized DoD procurement needs requiring in-house engineering and fabrication capabilities.