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Reliance Gear

High Precision Gears & Splines for Aerospace

Aerospace Components & Hardware HQ: Elmhurst, IL

About Reliance Gear

Elmhurst, Illinois manufacturer of custom precision bevel, parallel-axis and spline gears, gearboxes and assemblies for aerospace, defense and industrial applications. In-house gear cutting, CNC milling and turning, precision grinding, dimensional inspection and magnetic-particle inspection.

Manufacturing & Service Locations

Elmhurst, Illinois 60126

Elmhurst Manufacturing Facility · Headquarters & Manufacturing

Gears & Power TransmissionCNC MachiningCNC TurningPrecision GrindingInspection & MetrologyNon-Destructive TestingAssembly & Integration

Capabilities

Markets Served

Commercial AerospaceDefense & Military

Certifications

ITAR RegisteredAS9100ISO 9001

Certification information may be supplier-provided unless otherwise noted.

About This Profile

This company profile is researched and maintained by Aerospace Grade using authoritative public sources.

Last Reviewed: October 28, 2026

Source · Compiled from public sources

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