A member of the Precision Products family of companies
ISO 9001 Registered630-543-9570sales@oc-gear.com
Overton Chicago Gear
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Repair & Reverse Engineering

Emergency gear repair, rebuilds, and reverse engineering — get critical equipment back in service fast.

Repair & Reverse Engineering
Service
Repair & rebuild
Reverse Eng.
From sample
Metrology
AGMA / ISO / DIN
Turnaround
Expedited
Overview

When a critical gear fails and no drawing exists, we reverse engineer it. Our metrology lab digitizes and documents worn or broken gears, and our shop remanufactures exact replacements. From a single emergency gear to a full drive rebuild, we help you minimize downtime.

Key features

  • Reverse engineering from worn or broken samples
  • Full gear metrology and documentation
  • Exact-replacement remanufacturing
  • Emergency and expedited turnaround
  • Rebuilds of complete gear drives

Typical applications

Emergency breakdownsObsolete gearingDowntime recoveryLegacy equipment
More gearing
Spur Gears

Spur Gears

Precision straight-tooth spur gears cut to AGMA 11 in diameters up to 160 inches — the workhorse of heavy power transmission.

Helical & Double Helical

Helical & Double Helical

Single, double helical, and herringbone gears for smooth, quiet, high-load meshing in demanding drivetrains.

Bevel Gears

Bevel Gears

Spiral, straight, and skew bevel gears for reliable right-angle and intersecting-shaft power transmission.

Get started

Let's build the gearing your equipment depends on.

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.

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

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  • Gearing
  • Capabilities
  • Industries
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  • 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.