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Swiss Screw Machining: A Detailed Overview

Swiss screw machining is a technique that produces quality parts with superior precision. You can program a CNC Swiss Screw machine or automatic lathe to create metal and plastic parts with desired specifications.

Swiss screw machines help machinists make complex parts faster and at lower costs. They serve a wide range of industries due to their tight tolerances and vast production capabilities. The Swiss machining technology can deliver small, high-precision components with higher accuracy and less downtime.

This article will discuss Swiss screw machining and its working principle. You will also learn the applications of CNC Swiss machined parts and the various benefits of using CNC Swiss machines. Follow closely as we unveil all you need to know!

How Does a CNC Swiss Screw Machine Work?

how does a cnc swiss screw machine work
cnc swiss screw machine

CNC Swiss screw machines have a turning headstock that works with a guide bushing. This offers excellent stability for bar stocks while adding different features to the workpiece.

The CNC Swiss machines begin operation by programming the component’s design into the machine with the help of CNC controls. It gives the machine command of the perfect dimensions to cut and drill into the raw material to create the desired part.

Once you input the measurement, the next step is loading a bar stock into the feeder. The bar feeder holds onto a large amount of bar stock. It keeps the machine running for hours as it executes high-scale projects faster with little operator intervention.

The bar feeder carries a rotary cylindrical bar stock through the collet holding the material while adding various features. Thus, the revolving chuck takes the raw material and pulls it out to the preferred product length. Then, the collet grabs the part and holds it steady while it is machined.

You can use a guide brush to reduce the space between the cutting tools and the main spindle. The finished product breaks off the bar stock when the part is ready. After this, the bar feeder pushes the material forward to start machining the next component.

Benefits of Swiss Screw Machining

benefits of swiss screw machining
swiss screw machining

Swiss screw machining involves advanced techniques compatible with various materials and design diversity with increased efficiency. This custom machining process benefits manufacturers who require high-scale machined parts. The following reasons are why many industries choose swiss screw machining for your project:

Higher Production Efficiency

Swiss screw machines can simultaneously operate on thousands of parts with little human labor. Multiple spindle Swiss screw machines simultaneously make various cuts, slots, and drills.

The spindle revolves and adds quality features to the next part till it is ready. As a result, it increases production efficiency at high rates with no need for secondary operations. A regular multi-spindle machine has six primary spindles, which it uses to work on 6 different parts simultaneously. This means it machines six parts, using the time for working on one.

The machine is often programmed with the part specification allowing it to function simultaneously with little or no monitoring. In addition, these Swiss machines can work more than 12 hours without being monitored, fast-tracking the production time for large-volume projects.

higher production efficiency
higher production efficiency

Diversity of Material

The versatility of this manufacturing process allows you to choose from various CNC machining materials. Swiss screw machining is compatible with various grades of metal, including copper, aluminum, stainless steel, carbon steel, brass, titanium, and more.

It also works well with plastics, including thermosets and thermoplastics. You can create different parts with high precision with any of these materials. A swiss screw machine can effectively and efficiently manufacture complex parts from production-grade materials.


The Swiss turning process is suitable for producing varieties of small and large precision parts with less deflection, higher tolerances, and many more great qualities. The technique’s extensive material sustainability allows it to work with metal and non-metal materials.

The flexibility of the Swiss machining process enables it to produce critical parts precisely to the client’s requirements which conventional methods do not allow. As a result, manufacturers can satisfy customers with high-quality custom parts precisely as customers require.


CNC Swiss lathe machining is perfect for making thousands of identical parts at low costs. The manufacturing technique is ideal for industries that require extreme precision in parts with a low cost of production. Industries such as aerospace, automotive, medical, and defense benefit from lower manufacturing costs and competitive pricing advantage.

Faster Production of Machined Parts

The time used to execute a manufacturing project is essential to helping you meet your business goals. Swiss screw machines create parts quickly, considering the increased demand from various industries. It hastens the production processes, allowing you to get parts to market faster. Parts machined using the Swiss screw machining method have excellent precision and accuracy. Therefore, there is usually no need for additional post-processing.

High Precision

steel metal cutting machine process by cnc lathe in workshop

Swiss screw machines make highly accurate cuts and drills on parts. It does this with the help of the guide bushing, which supports the parts firmly. In addition, CNC Swiss screw machines can rotate parts at 10,000 RPM to fabricate parts within a close tolerance of 0.0002 inches (0.005mm). This CNC machining method is one of the most accurate and reliable processes for machining small parts that would usually vibrate during machining operations.

Reduced Waste

CNC Swiss automated machining is a production process that helps avoid material wastage. Although it is a subtractive manufacturing process, it collects scrap metals and recycles them. In addition, Swiss screw machines reduce waste by ensuring high precision and reducing possible human errors and defective parts.

Applications of Swiss Screw Machined Parts

Many industries depend on Swiss screw machines for complex CNC machining that meet quality standards. Here are some of these industries:



The aerospace industry typically demands the highest precision and tolerances in its components. As a result, CNC Swiss screw machines can machine stainless while meeting the aerospace sector’s secondary processing demands. You can make aircraft parts such as screws, shafts, couplers, flanges, retainer rings, seat frames, and connectors using Swiss screw machines.

Food Processing

This sector demands high-quality products. The principles of the food processing industry have embraced quality standards. Consequently, the components produced in this sector have the highest tolerances and material quality. Conveyor belts, trays, stainless steel mixers, OEM machines, motors, etc., are significant Swiss screw-machined parts used in the food processing industry.



The military sector requires durable machined parts with the highest tolerances, which are suitable for the armed forces. As a result, the Swiss screw machining process helps create many military-grade components. Typical machined parts used for the military industry include fighter aircraft, artillery, military ship, and missile components.

Electrical and Electronics

The electronics industry maintains an increasing demand for Swiss machined parts. These Swiss machined parts fulfill the need for tighter tolerance and other complex specifications required to produce them. Swiss automated machining is the reliable solution to many of the challenges in the electronics industry.

Components of circuit boards, radios, connectors, and motherboards are good examples of Swiss-machined parts used for the electronic industry. The companies in this sector attempt to enhance parts’ quality and efficiently reduce production costs and time using the Swiss screw machining process.

Medical and Dental

medical and dental
medical and dental

The Swiss screw machining method helps produce medical devices and surgical and dental tools. It creates different components from FDA-approved materials, like stainless steel surgical instruments. These Swiss-machined medical equipment are CT scanners, ultrasound machines, catheters, litigation devices, and handheld surgical tools.

These machined parts can save a patient’s life and improve the quality of life of a patient. In addition, the quality of these Swiss machined components boosts the confidence level of doctors, dentists, and other medical practitioners. As a result, the medical industry depends on CNC screw machining.

Why Should You Choose Our CNC Swiss Screw Machining Services?

AT Machining combines vast machining capabilities with highly skilled technicians to offer the best CNC Swiss screw machining services. Unlike conventional CNC lathes, we have CNC Swiss screw machines that offer tighter tolerances and precision components. Our machine tools allow us to manufacture various workpieces from engineering-grade metals and plastics.

We have modern automated quality assurance equipment with the latest software system that measures our machine parts’ inner and external qualities. Our experts have in-depth knowledge and good years of Swiss screw machining experience.

AT Machining’s Swiss screw machine tooling is efficient for manufacturing parts between 500 and 50,000 units. We offer a wide array of secondary services that guarantee machined parts with desired surface finishes. Contact us today, and let our expert team help bring your design ideas to reality.

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Hey there, I’m Sam!

From AT-Machining, I’m a CNC Machining Expert in this field for more than 20 years.  We offer cost-effective machining services from China. Ask for a quote for your ongoing or upcoming projects now!

Best Regards, Sam, Co-Founder

AT Machining

On-demand CNC Machining With Custom Finishes. You Design It, We'll Make It.