A member of the Precision Products family of companies
ISO 9001 Registered630-543-9570sales@oc-gear.com
Overton Chicago Gear
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630-543-9570
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Let's get your gears turning

Send us a print, a sample, or a set of requirements and our engineers will help you spec the right gearing — and get precision parts back to you fast.

Get in touch

Let's get your gears turning

Send us a print, a sample, or a set of requirements. Our engineers will help you spec the right gearing and get precision parts back to you — fast.

Call us
630-543-9570
Email us
sales@oc-gear.com
Visit us
530 Westgate Drive, Addison, IL 60101

Our facility

530 Westgate Drive

Addison, IL 60101, USA

Hours

Monday – Friday: 7:00 AM – 4:00 PM CT

Saturday & Sunday: Closed

Overton Chicago Gear

A full-service manufacturer of precision open gearing and custom gearboxes since 1888. A founding member of AGMA, made in Addison, Illinois.

630-543-9570sales@oc-gear.com

530 Westgate Drive, Addison, IL 60101

Gearing

  • Spur Gears
  • Helical & Double Helical
  • Bevel Gears
  • Worm Gears
  • Custom Gearboxes
  • Repair & Reverse Engineering

Company

  • About Us
  • Gearing
  • Capabilities
  • Industries
  • Request a Quote
  • Contact

Capabilities

  • 5-Axis Gear Milling
  • Carburizing & Press Quenching
  • Gear Metrology Lab
  • Contract Machining
  • Reverse Engineering

© 2026 Overton Chicago Gear. Part of the Precision Products Machining Group.

ISO 9001 RegisteredAGMA Founding Member · Est. 1888
Carved byChisel&Co.