Overton Chicago Gear

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Precision Gearing from Skilled Craftsmen

Overton Chicago Gear is a full-service manufacturer of open gearing and gearboxes. For more than 130 years we have delivered high performance, mission critical gearing and gearboxes.

We design and build custom gearboxes to meet each customer’s specific application and requirements. We build to print, reverse engineer a single gear or deliver a complete gearbox. We rebuild and upgrade gearboxes from any manufacturer, and create upgraded designs that drop into existing spaces. When you choose Overton Chicago Gear, you get a reliable supplier that delivers quality product, on-time and at a competitive price.


Long-Term Manufacturer and Standards Advocate

Founded in 1888, Overton Chicago Gear combines rich history and specializations from Overton Gear, Chicago Gear, D.O. James, Illinois Gear, Balfre Gear, Franke Gear, and Ignition Engineering. These well-known brands help make OCG a premier, diversified gearing supplier.

Overton Chicago Gear is a founding and active member of the American Gear Manufacturers Association (AGMA). The association defines standards for design, manufacture, acceptance criteria and usage of gearing—many now adopted by ISO and used by their member companies. AGMA represents member gear companies worldwide, facilitating technology transfers, offering education, and lobbying governments. Our employees continue to drive gearing forward by participating on committees with AGMA. OCG was admitted to the AGMA Hall of Fame in 2016.


Custom Gearing Backed by Personal Service

Long-term manufacturing success depends on both products and people. Overton Chicago Gear continues to lead in quality, innovation and service with a focus on attention to detail. We keep pace with the latest technology advances and strive for perfection in production scheduling to expedite your orders. We believe in personal service and we are committed to resolving any issue quickly and completely.


Dedicated Team of Gearing Experts

At OCG, cutting edge machinery, leading edge technologies and knowledgeable professionals work together like the precision gearing we manufacture. Our integrated team of engineers, metallurgists, technicians, and support staff are focused on delivering the high performance gearing products when you need them.

Current job openings at Overton Chicago Gear