Gear Cutting

MMi Sonora is a leading supplier of custom cut gears that meet the most demanding tolerance requirements in the industry. Our facilities house gear hobbing, shaping, and milling equipment that gives us the capability to machine  diverse range of tooth forms.  Partnered with the other departments, MMi can create a huge selection of truly custom gears and assemblies. Various heat treating processes are available to enhance wear properties and strengthen the teeth.

Gear Cutting Method


Hobbing Shaping Milling Broaching




Gear Types


Helical Spur Pinion Internal Gear Boxes: Planetary and Spur Rack Worm




Machining Envelopoe and Tolerances


Diameter: .1 to 13 in Depth: .05 to 8 in Tolerance: ± .0001 in AGMA Quality 10




Materials Cut


Aluminum (all alloys/tempers) Stainless Steels (including 3xx, 4xx, 17-4 (all conditions), 15-5) Alloy steels Copper Plastics (including: peek, ultem, polycarbonate, nylon, delrin, and more) High Nickel alloys





2.5" OD, 64 diametral pitch, AGMA Q10 Aluminum motor housing gear