Swiss Machining for Complex, Tight-Tolerance Components
With our Citizen Swiss machines we support high mix low volume and high volume production runs.
Precision Swiss CNC Machining Services
When your application requires exceptional precision, repeatability, and efficiency for small, complex components, Swiss machining is one of the most capable manufacturing processes available. At GrovTec Machining, we provide precision Swiss CNC machining services for OEM manufacturers that demand consistent quality, tight tolerances, and dependable production deliveries.
Our Swiss machining capabilities support prototype development through high-volume production for customers in aerospace, defense, medical, electronics, energy, and other demanding industries where quality cannot be compromised. Whether you’re sourcing miniature medical components, precision connector pins, aerospace bushings, or high-volume turned products, our team works with your engineering and procurement teams to manufacture components that meet your quality, delivery, and performance requirements.
As a leading Oregon screw machine shop, we love mid to high-volume production runs. With that being said a large part of our success has been being able to run and ship to blanket releases. We do not require minimum order quantities; however, higher order volumes allow us to spread setup costs across more parts, reducing the per-part price. Please consider this when planning your production orders.
Typical Swiss Machining Capabilities
- Tight-tolerance precision parts
- Prototype through production quantities
- Complex multi-operation parts completed in a single setup
- Wide range of metals and engineered plastics
- Secondary operations and finishing available
- Engineering support for manufacturability
Common Materials We Machine
Aluminum
Alloy Steels
Brass
Stainless Steel
Plastic
Titanium
What is Swiss CNC Machining?
Swiss machining, also known as Swiss-type turning or sliding headstock machining, is a specialized CNC machining process designed to manufacture small, highly precise cylindrical components.
Unlike conventional CNC lathes, Swiss machines support the workpiece using a guide bushing positioned very close to the cutting tool. As the bar stock advances through the guide bushing, the cutting tools machine the material while maintaining continuous support.
This design significantly reduces material deflection during machining, allowing Swiss machines to achieve exceptional precision on long, slender, and intricate parts that would be difficult or impossible to manufacture efficiently on conventional turning centers.
Because many machining operations can be completed without transferring the part to another machine, Swiss machining also improves repeatability while reducing handling, setup time, and overall production costs.
Swiss machining is particularly well suited for components requiring:
- Extremely tight dimensional tolerances
- Small diameters
- High length to diameter ratios
- Complex geometries
- Fine surface finishes
- High-Volume Production
- Multiple machining operations in one setup
Why choose Swiss machining?
Not every turned component requires Swiss machining. However, when precision, repeatability, and production efficiency become critical, Swiss machining offers significant advantages over traditional CNC turning
Exceptional Precision
The guide bushing supports the material immediately adjacent to the cutting tool, minimizing vibration and deflection. This allows Swiss machines to produce extremely accurate components with outstanding repeatability.
Ideal for Small Components
Swiss machining excels at manufacturing:
- Medical device components
- Precision pins
- Shafts
- Actuator rods
- Bushings
- Connectors
- Valves
- Fittings
- Electronic contacts
Complex Parts in One Operation
- Eliminating Secondary Operations: Complex milling, cross-drilling, and threading are performed simultaneously, removing the need for multiple machines and reducing cycle time.
- Length-to-diameter Ratios: Citizen technology has the ability to machine parts with large length-to-diameter ratios. Up to 7XD without a center support, something other standard lathes struggle to achieve.
- Superior Surface Finishes: The unique sliding headstock design supports the workpiece right next to the cutting tool, providing maximum rigidity and eliminating the vibration or “chatter” common in traditional lathes.
- Precision at Scale: Whether supporting high-mix, low-volume prototypes or high-volume production runs, our Swiss machines maintain micron-level tolerances across thousands of cycles.
Efficient High-Volume Production
Once a Swiss machine is set up, it can manufacture thousands or even millions of identical parts with excellent consistency. For OEM manufacturers requiring repeatable production over multiple releases, Swiss machining provides outstanding long-term value.
The ultimate advantage of our Swiss department is the drastic reduction in handling time and labor costs. By eliminating the need to move parts between workstations, we maintain a higher level of concentricity and structural integrity.
For our clients, this means faster lead times, lower costs per part, and the peace of mind that comes from precision swiss machining.
Our Citizen Swiss Machines
GrovTec Machining’s Swiss CNC department is centered around 18 Citizen Swiss CNC turning centers, allowing us to efficiently manufacture complex precision components with exceptional consistency.
Our equipment mix enables us to support both small-diameter precision components and larger, more complex parts while maintaining the repeatability required for production manufacturing.
Citizen L16 Type XII
14
Machines
The Citizen L16 Type XII is optimized for manufacturing small, high-precision components that require multiple machining operations during a single cycle.
With fourteen identical machines, GrovTec can efficiently scale production while maintaining consistent quality across large production runs.
Capacity
- Max. bar diameter: 5/8 inch
- Max. part length: 28 inches
Typical applications include:
- Medical components
- Precision pins
- Bushings
- Connector contacts
- Shafts
- Fasteners
- Instrumentation components
- Electronic hardware
Citizen L32 Type X & XII
4
Machines
For larger precision components, our Citizen L32 Type XII machines provide additional capacity while maintaining the same level of dimensional accuracy.
The larger work envelope allows more flexibility while preserving the advantages of Swiss machining for longer, more complex parts.
Capacity
- Max. bar diameter: 1-3/8 inches
- Max. part length: 36 inches
Typical applications include:
- Larger bushings
- Valve components
- Aerospace hardware
- Defense components
- Hydraulic fittings
- Precision shafts
- Industrial equipment components
Production Volumes
Every manufacturing program has different production requirements. Some customers require a small batch of components for prototype evaluation, while others need a manufacturing partner capable of producing tens of thousands of precision parts with consistent quality over multiple releases.
GrovTec’s Swiss machining department is designed to support both high-mix, low-volume manufacturing and high volume multi year production programs.
Prototype & Low-Volume Production
During new product development, engineers often need small quantities of parts to validate designs, perform functional testing, or support pilot production.
Our Swiss machining department supports prototype and low-volume manufacturing with production quantities beginning around 50 pieces, allowing customers to validate designs before scaling production.
Typical prototype projects include:
- Design validation
- Engineering samples
- Production qualification
- Functional testing
- First Article Inspection (FAI) parts
- Bridge production
Our engineering team reviews every drawing for manufacturability and may recommend design improvements that simplify production, reduce machining time, or improve part quality without affecting function.
High-Mix Manufacturing
Many OEM manufacturers manage hundreds of unique part numbers with varying annual demand.
Our production model is built around high-mix manufacturing, allowing us to efficiently manage multiple programs while maintaining consistent quality and delivery performance.
Benefits include:
- Flexible scheduling
- Repeatable setups
- Reduced lead times
- Consistent documentation
- Reliable delivery for recurring orders
High-Volume Production
For mature production programs, our fleet of 18 Citizen Swiss CNC machines provides the capacity required for long-term manufacturing.
Typical production quantities range from 5,000 to 50,000 pieces, depending on part complexity and customer demand.
Running multiple identical machines allows us to maintain production continuity, improve scheduling flexibility, and support ongoing manufacturing programs without relying on a single machine.
Industries we serve
Precision machining requirements vary significantly across industries. Our experience working with demanding OEM manufacturers allows us to tailor manufacturing processes, inspection methods, and documentation to each customer’s requirements.
Aerospace Swiss Machining
Aerospace components require exceptional precision, repeatability, and process control.
Our Swiss machining capabilities support components used in:
- Flight control systems
- Hydraulic systems
- Fuel systems
- Quick disconnects
- Cabinet hardware
- Sensors
- Fasteners
- Instrumentation
- Electrical connectors
Aerospace manufacturers depend on suppliers capable of maintaining tight tolerances while delivering consistent quality across every production lot.
Defense Swiss Machining
Defense applications demand dependable suppliers capable of manufacturing mission-critical components while maintaining strict quality standards.
As an ITAR Registered manufacturer with an AS9100 Rev D certified quality management system, GrovTec supports customers requiring secure, dependable domestic manufacturing.
Typical defense components include:
- Precision pins
- Bushings
- Connector contacts
- Fire control components
- Electronic housings
- Guidance system hardware
Medical Device Swiss Machining
Medical devices often require miniature, highly complex components with exceptional dimensional accuracy and superior surface finishes.
Swiss machining is particularly well suited for:
- Surgical instruments
- Brass barbs
- Bone screws
- Implant components
- Diagnostic equipment
- Medical connectors
Electronics & Electrical Fastener Components
Miniature electronic components frequently require extremely small features that benefit from Swiss machining.
Typical applications include:
- Connector pins
- Contacts
- Sensor components
- Communication hardware
- Precision terminals
- Shielding components
Oil & Gas Machining
Oil & Gas applications often require durable precision components manufactured from corrosion-resistant materials capable of performing in demanding environments.
Typical components include:
- Valve components
- Perf tools
- Retainer nuts
- Peak insulators
- Bushings
- Sleeves
- Hydraulic fittings
- Flow control components
Swiss machining supports an enormous variety of precision components.
Precision Pins – Used in medical devices, electronics, aerospace assemblies, and industrial equipment.
Bushings – Manufactured for aerospace, defense, hydraulic systems, industrial equipment, and motion control applications.
Shafts – Precision shafts requiring tight concentricity, straightness, and excellent surface finish.
Connector Contacts – Miniature electrical contacts requiring precise dimensions and exceptional repeatability.
Valve Components – Manufactured from stainless steel, brass, titanium, and specialty alloys.
Swiss Machining vs Conventional CNC Turning
While both processes manufacture cylindrical components, Swiss machining provides distinct advantages for many precision applications.
Swiss CNC Machining
- Excellent for small diameters
- Superior support with guide bushing
- Reduced vibration and deflection
- Ideal for complex multi-operation parts
- High repeatability
- Excellent for production quantities
Vs
Conventional CNC Turning
- Better suited for larger diameters
- Greater unsupported workpiece length
- Increased deflection on long, slender parts
- May require multiple setups
- Good repeatability
- Well suited for larger component
Selecting the right process depends on part geometry, material, tolerances, production quantity, and application. Our engineering team can recommend the most efficient manufacturing method during the quoting process.
What Affects the Cost of Swiss Machining?
- Material type
- Part complexity
- Tolerance requirements
- Surface finish specifications
- Quantity ordered
- Secondary operations
- Inspection requirements
- Lead time expectations
Our goal is to provide the most cost-effective manufacturing solution while maintaining the quality and performance your application requires.
Design for Manufacturability (DFM) Reduces costs and improves quality
The best machining project begins long before the first chip is cut. Our engineering team reviews customer drawings to identify opportunities to improve manufacturability without compromising part function.
Common DFM recommendations include:
- Simplifying complex features
- Optimizing tolerances
- Selecting more machinable grade of materials
- Reducing unnecessary secondary operations
- Improving tool access
- Reducing machining cycle time
Swiss CNC Parts Gallery
Machining solutions for aerospace, automotive, defense & security, electronics, medical, energy and more
Frequently asked questions
- What production quantities do you support?
- From approximately 25 to 50 pieces for prototypes up to 10,000 to 50,000+ for production programs.
- What part sizes and tolerances can Swiss CNC machining achieve?
- Swiss lathes are built for small-diameter, high-precision work, typically handling stock from around 1 mm up to about 32 mm in diameter (some machines go to 38 mm or larger). They routinely hold tolerances in the range of ±0.0002″ to ±0.0005″ (roughly ±0.005–0.013 mm), which is why they’re favored for medical, aerospace, electronics, and micro-mechanical components.
- How is Swiss CNC machining different from conventional CNC turning?
- The key difference is the sliding headstock and guide bushing. In Swiss-type machining, the bar stock moves axially through a guide bushing while the tools remain stationary in the Z-axis, so cutting always happens very close to the point of support.
- Do you machine titanium?
- Yes. We machine titanium for medical, aerospace and defense applications.
- Do you provide inspection reports?
- Inspection documentation is available based on customer and drawing requirements.
- Are you AS9100 certified?
- Yes. GrovTec is certified to AS9100 Rev D
- Are you ITAR registered?
- Yes.
- What surface finish can you achieve?
- Typical finishes are held to 32 RMS or better, depending on material and geometry
- What materials can be Swiss machined?
- We commonly machine 300 and 400 stainless steel, alloy steel, aluminum, brass, titanium and a variety of engineering plastics.
- What is your typical lead time?
- On average we are around 6 to 10 weeks. Depending on time of year this can vary so we try and run parts to either a min max or run EAU quantities to inventory and release them throughout the year. This helps eliminate any lead time issues as well as gives you the best possible piece price as our set up costs get amortized over more parts.
Trusted worldwide
Upload your design specifications to receive a quote for machining. We can help with scheduling, shipping, traceability, materials, and quality. Each request for quote is responded to within three business days.
GrovTec is AS9100D / ISO 9001:2015 Certified with TUV Rheinland of North America and ITAR Registered
Seven Seals Recipient and Pacific Northwest Defense Coalition Member