Geared to Serve You Since 1961!


G & K Machine Company | Commerce City, CO

For more than 50 years, G & K Machine Company has been serving industries in the Colorado area, providing them with the repairs and products they need. While we focus on gear manufacturing, we are also skilled in a wide range of machinery repairs and services as well. Regardless of the type of work, we have you covered. Let us help you get your business back on track!

Our team can handle anything from key stock replacements to entire gearbox remanufacturing, offering you a full service job shop to take care of any issues you might have. We are also available for in-house inspections and consultations. We are happy to work with you for fast turnarounds or "break-down" services.

Precision Machining

At G&K we have a full line-up of precision CNC and manual machines including small and large, lathes, mills and grinders. We have catered to the Automotive Industry, Military Organizations and Heavy Industrial Outfits as well as small prototyping firms and one-offs for personal projects.

The combination of these machines our highly experienced and dedicated team, allow us to find a fit for any project you may have.
Services — G & K Machine Company in Commerce City, CO

Quality Assurance

At G&K we hold ourselves and our products to the highest standards, this can be seen in our strict adherence to customer requirements for precision and accuracy. Though we are skilled in classical inspection techniques, with our new Zeiss CMM, we can now hold our products to a much higher degree of accuracy and quality. In addition to this Quality Control of our customer's finished products we focus on Quality Assurance. This means upholding policies and procedures though out the manufacturing process that minimize mistakes and defects.
Services — G & K Machine Company in Commerce City, CO

Reverse Engineering & Remanufacturing

We can reverse engineer, remanufacture parts or repair parts for almost every application. Whether you are in the aerospace industry, part of a heavy industrial outfit or just need a new part for your old classics, we can design and machine the parts you will need for a successful future.
Services — G & K Machine Company in Commerce City, CO

Reducer Repair & Gearbox Rebuilds

For over 50 years we have been helping keep Colorado companies running smooth with gearbox and reducer repairs. From trouble shooting to complete rebuilds we can do it all. Our in-house gear department means reduced times and increased quality. When it comes to precision, our team will work hard to supply you with the product you need.

We understand how important it is for you to have reliable equipment to run your business, which is why we guarantee all of our products and services.
Services — G & K Machine Company in Commerce City, CO

Gear Manufacturing

When it comes to gears, we have high standards and expectations. We always want to provide products that demonstrate the quality and work ethic we believe in. Gears are where we got our start and are a staple of G&K. Our gear services include Shaping, Hobbing & Keyseating of both internal and external helical gears, spur gears and splines. We also often manufacture both worm gears and worm shafts. Our team can also design gear sets to an entire gearbox to fulfill you specific need.
We can manufacture gears in a variety of sizes.
  • Gear hobbing: over 4 feet in diameter for the spur, helical and worm gears
  • Gear shaping: over 3 feet in diameter for internal and external work
  • Thread milling: multi-lead worms up to a 16 inch diameter and 48 inches long
  • Key seating: up to 2 inches in width and 12 inches through
Services — G & K Machine Company in Commerce City, CO


At G&K, you do not need to have an existing part or drawings. We are ready to serve any of your manufacturing needs including design and engineering of new parts or products. Our in-house engineering team has the experience and tools to help you take your idea into the real world. With the most up-to-date versions of SolidWorks® and Mastercam® software we are ready for your next project.
Services — G & K Machine Company in Commerce City, CO

Hours of Operation:
Mon-Fri 07:00 AM - 04:00 PM
Sat-Sun - Closed