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530 Westgate Drive
Addison, IL 60101
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(630) 543-9570
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2823 W. Fulton Street
Chicago, IL 60612
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(773) 638-0508


OCG Solutions for Diverse Industries

OCG delivers high performance, high precision open gearing and gearboxes for industries as diverse as fracking, mining, defense and medical devices. No matter how special the application, OCG can deliver. We have more than 130 years of know-how, top-tier talent, state-of-the-art manufacturing and quality control systems that together ensure the best gearing for every application.