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Swiss Machining

A trusted Swiss machining partner, Coleys offers high-quality, precision Swiss machine parts and solutions.


Coleys acquired Automatic Parts Inc in 2009 to improve our Swiss and screw machining capabilities – allowing us to offer the highest quality metal and plastic Swiss machined parts and components.

Efficient and precise, our CNC machine shop has over 50 years of Swiss machining expertise. Request a quote or contact us today to learn more about Swiss machine services from Coleys and Automatic Parts.


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Swiss Machining Process

Swiss machining was first designed for Swiss watchmaking and developed over time to accommodate the aerospace, technology, and medical industries. Swiss machining differs from other screw machining by using subtractive manufacturing. This allows operators to maintain a closer distance between the main spindle and the cutting tool.

This process is often used to make precise cylindrical parts and products quickly and efficiently. This unique type of machining produces the kind of perfection that keeps machines with a compact design running smoothly with limited downtime, all while performing multiple operations simultaneously, much like the Swiss originally intended.

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Benefits of Swiss Machining

Swiss screw machining is ideal for close tolerance and complex parts. Capable of running different grades of metal and plastic, CNC Swiss screw machines us the opportunity to improve performance and reduce cost – all while achieving a high level of detail and precision. Additional benefits include:

Lower Operation Time

Our Nexturn Swiss machines deliver precise parts while keeping costs low. Additionally, the operation time of a Swiss machine is much lower than its lathe counterpart. A Swiss machine can perform several operations at once with a combination of tools, all working together to further reduce cost and wait times.

High-Quality Finishing

When it comes to Swiss machining, there may be no need to grind or for finishing. The surface finish will be perfectly consistent, with a higher quality finish, every time. This type of machining offers closer tolerances than typical screw machining, improved finishes, and all-around better value.

Increased Production Efficiency

Machine operators are more hands off when handling a Swiss machine because it can run autonomously. In addition, Swiss machines contain multiple spindles and cutting tools – helping optimize production and limit labor costs.

Improved Control

Coleys API is primarily a Swiss machining house utilizing Citizen Swiss CNC machines. This includes the brand new L32x, the latest high-speed Swiss machine that has been completely redesigned with all of Citizen’s new components, technology, and software. With the integration of modern CNC technology, our team is enabled to achieve tighter tolerances with a lower chance of production error.

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Swiss Machining Capabilities

The Coleys and Automated Parts team are exceptionally skilled in machining parts of intricate and complex shapes crafted from a variety of plastic and metal materials. These include, but aren’t limited to:

  • Aluminum
  • Brass
  • Bronze
  • Copper
  • Plastic
  • Steel
  • Titanium
  • Zinc

Get in touch with us today for more information about the materials available for CNC machining.

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Swiss Machining Markets We Serve

Coleys serves a wide range of industries that are suited to making parts using Swiss and Screw Machining.

Check out our gallery to see some examples of CNC machining projects we’ve completed.

Coleys: Exceptional Swiss Precision Machining Services

Coleys was built on the belief that true partnerships are crucial to success. We have built lifelong relationships for over 50 years by producing high-quality Swiss machined CNC components. Ready to learn more? Check out our gallery today to see some examples of CNC Swiss machining projects we’ve completed.

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We Partner with Innovative, Growth-Minded Manufacturing Companies

Our quality, performance, and commitment to growth and innovation has fostered multiple successful partnerships with top CNC manufacturing companies across the country. We are proud to work with a wide variety of businesses throughout dozens of industries. Built on trust and common goals, we find that these partnerships are mutually rewarding and create lifelong bonds.
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About Coleys CNC Machining


For over 50 years, Coleys Inc. has provided high-demand, low-tolerance industries with superior quality machining. Our services range from simple drilling of production-ready parts to the complex fabrication of intricate designs.


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