Expert Gear Design and Engineering Services

CMG can shape spur gears up to 20 inches (500mm) in diameter with a 5-inch face, and hob spur gears up to 16 inches (400mm). For external gear grinding, the capacity is up to 400mm (15.75 inches) in diameter. Helical gear hobbing is supported up to 8 inches in diameter with helix angles up to ±45 degrees.

CMG achieves AGMA 10 quality on shaped and hobbed gears and AGMA 13 — the highest precision tier — on ground spur gears and heat-treated gears. These ratings reflect strict dimensional accuracy and surface finish standards, validated through in-house Gear Charts and dimensional data collection tied to each manufactured part.

Yes. CMG offers reverse engineering services for obsolete or legacy equipment gears. Using existing gear samples or partial drawings, the engineering team can recreate accurate specifications, manufacture replacement parts, and restore equipment to full operation — even when original OEM documentation is no longer available.

CMG serves a wide range of industries including aerospace, defense, medical, industrial manufacturing, mining, transportation, construction, agricultural, and rail. The company also supports OEM manufacturers requiring custom gear solutions and aftermarket replacement parts, making it a versatile partner across precision-critical sectors.

Carnes-Miller Gear supports custom gear modifications including lead relief, profile relief, and tip relief. All modifications are validated through Gear Charts and process documentation. The team also offers custom design and engineering consultations to ensure modifications meet exact performance, durability, and fit requirements for each application.

CMG employs in-house nital-etch testing to detect grinding burns and subsurface damage — a critical quality check for heat-treated and ground gears. All parts are supported by process planning records, dimensional data collection, and specialized certifications tied directly to manufactured components, ensuring full traceability and compliance with AGMA 13 standards.