Internal Spur Gears High-Performance Gear Solutions

Internal gears are used across a wide range of applications including automotive transmissions, industrial gearboxes, aerospace and defense systems, mining equipment, transportation and rail systems, construction machinery, and agricultural equipment. Their design enables compact, high-efficiency power transmission in planetary gear configurations.

Carnes-Miller Gear manufactures internal spur gears to AGMA 10 quality on shaped and hobbed gears, and AGMA 13 quality on ground gears, making them suitable for high-precision applications in aerospace, defense, and demanding industrial environments.

Carnes-Miller Gear manufactures ring gears up to 10 inches pitch diameter for planetary gear systems, with a face width capacity of up to 5 inches. Their precision grinding capabilities extend up to 400mm in diameter.

Yes. Carnes-Miller Gear provides turn-key custom gear manufacturing that includes design consultation, reverse engineering, and complete machining to customer specifications. Their full in-house capabilities — from gear blanking to grinding — ensure precise control over production, quality, and delivery timelines.

Carnes-Miller Gear serves a broad range of industries including aerospace and defense, industrial machinery, mining, transportation and rail, construction, and agricultural equipment — delivering precision internal spur gears and planetary gear systems engineered to meet each sector's demanding standards.

Carnes-Miller Gear has been manufacturing precision gears since 1973 — over 50 years of experience delivering high-quality gear solutions for aerospace, defense, medical, and industrial sectors.

In addition to internal spur gears, Carnes-Miller Gear offers planetary gears, ring gears, spur gears, helical gears, worm gears, custom gear manufacturing, precision gear grinding services, turn-key gear and gear shaft solutions, and precision machining services — all produced in their 18,000 sq ft in-house facility.