United Gear & Assembly
Gears and shafts from machining through heat treatment
Part of United Stars, Inc.
About United Gear & Assembly
United Gear & Assembly manufactures precision gears, shafts and related assemblies for OEM applications. Its vertically integrated offering combines engineering, prototyping, machining and in-house heat treatment. The company works with alloy and carbon steels, aluminum, cast iron and powdered metal, with documented routes for prototype parts and production programs. The capabilities page lists hobbing, shaping, gear-tooth grinding, milling, wire and sinker EDM, and internal and external grinding. Its heat-treatment department offers carburizing, through-hardening, gas nitriding, induction treatment and stress relieving, supported by a metallurgical analysis laboratory. The official contact page identifies the Hudson, Wisconsin site and provides a direct route for component inquiries.
Ownership from the company's own website, Nov 6, 2026 · Industries from the company's own website, Nov 6, 2026
Services
Gear grinding
Hobbing, shaping including helical shaping, and gear-tooth grinding for precision gear components.
Gear hobbing
Hobbing, shaping including helical shaping, and gear-tooth grinding for precision gear components.
Gear shaping
Hobbing, shaping including helical shaping, and gear-tooth grinding for precision gear components.
Cylindrical grinding
Vertical and horizontal milling, wire and sinker EDM, and surface, internal and external grinding.
Internal grinding
Vertical and horizontal milling, wire and sinker EDM, and surface, internal and external grinding.
Milling
Vertical and horizontal milling, wire and sinker EDM, and surface, internal and external grinding.
Sinker EDM
Vertical and horizontal milling, wire and sinker EDM, and surface, internal and external grinding.
Surface grinding
Vertical and horizontal milling, wire and sinker EDM, and surface, internal and external grinding.
Wire EDM
Vertical and horizontal milling, wire and sinker EDM, and surface, internal and external grinding.
Heat treatment
In-house gas carburizing, through-hardening, gas nitriding, induction heat treating and stress relieving.
Stress relieving
In-house gas carburizing, through-hardening, gas nitriding, induction heat treating and stress relieving.
Engineering support
Engineering collaboration and prototype manufacturing support for gear and shaft programs.
Prototyping
Engineering collaboration and prototype manufacturing support for gear and shaft programs.
Locations
Business address
1700 Livingstone Road
Hudson, WI 54016-9365Company location details for Hudson business location