What Is Swiss CNC Machining?
Swiss CNC machining (also known as Swiss screw machining or sliding headstock turning) feeds bar stock through a stationary guide bushing directly adjacent to the cutting tool. Because the material is supported right where the cut happens, deflection and vibration are eliminated — allowing ultra-tight tolerances, micro features, and length-to-diameter aspect ratios over 20:1 that conventional CNC lathes cannot achieve.
Bar Stock Feeds Through Guide Bushing
The raw bar feeds through a carbide-lined guide bushing, providing zero-clearance support right next to the cutting insert.
Sliding Headstock Moves Along Z-Axis
Instead of moving the cutting tool along the part, the headstock advances the bar past fixed gang tooling, maintaining maximum rigidity.
Live Tooling & Sub-Spindle Dual Machining
Cross-milling, axial drilling, threads, and back-side features are completed in a single setup before parting off the finished part.
From First Article to Bar-Fed Production for Greensboro
The economics of small turned parts change fast in the Piedmont Triad. Honda Aircraft Company builds the HondaJet at Piedmont Triad International Airport, HAECO Americas runs one of the largest airframe MRO operations in the country on the same field and Triumph Group machines aerostructures nearby. A supplier feeding that ecosystem might quote a clevis pin at 50 pieces for a first article, then face a production release of thousands. Swiss turning is built for exactly that curve: the setup that made piece one runs lights out through piece 50,000, and the per-piece price drops steeply once bar stock is dedicated to the job.
The same prototype-to-production path shows up outside aviation. Qorvo designs RF filters in Greensboro that ship in consumer devices by the billion, and the test fixtures and packaging equipment behind them consume hardened contact pins and gauge pins in recurring lots. The Joint School of Nanoscience and Nanoengineering run by NC A&T and UNCG spins out miniaturized sensor work that starts as onesies and twosies. RivCut carries both ends: no minimum order for the research prototype, bar-fed runs past 100,000 pieces for the program that took off, ground freight reaching Greensboro in 4 to 5 business days from our California shop with air always available.
Engineered for Micro-Precision & High Volume
From single medical prototypes to automated 100,000+ piece production runs — built for zero defect manufacturing.
±0.0001" Micro Tolerance
Holding ultra-precise concentricity, diameter, and thread pitch tolerances on slender pins, shafts, and medical implants where standard lathes fail.
Single-Setup Completion
Multi-axis live tooling and sub-spindles handle turning, off-center milling, cross-drilling, hex broaching, and thread whirling with zero secondary setups.
Superior Ra 16 Surface Finish
Rigid guide bushing support eliminates chatter and micro-vibration, consistently producing mirror-smooth Ra 16 µin (0.4 µm) turned surfaces as-machined.
Lights-Out Production Savings
Automatic bar feeders and continuous chip management allow 24/7 un-attended operation, dramatically lowering unit costs for mid-to-high volume orders.
Swiss Machining Services Suite
Sliding headstock capabilities engineered for challenging small-diameter components.
Micro-Miniature Turning
Machining small-diameter components down to 0.020" (0.5 mm) with tight features, internal bores, and miniature threads for medical instruments and micro-valves.
Down to 0.5 mm barHigh L/D Ratio Slender Shafts
Turning long, slender shafts and pins with length-to-diameter ratios up to 20:1 without chatter, taper, or deflection.
L/D up to 20:1Multi-Axis Live Tooling
Up to 12 axes with motorized driven tools for off-center milling, keyways, cross-drilled passages, hex flats, and helical thread whirling.
Up to 12-axis liveDual-Spindle Sub-Machining
Synchronized pick-off sub-spindle finishes the back end of the part—chamfering, counterboring, and tapping—delivering 100% complete parts off the line.
100% finished partsMedical & Implant Machining
Precision turning of Titanium Ti-6Al-4V ELI bone screws, dental implant posts, orthopedic pins, and endoscope tips with ISO 13485 quality control.
Titanium & 316L medicalHigh-Volume Bar Fed Runs
Automated 12ft bar loaders, high-pressure coolant (2,000 PSI), and automated part catchers support fast production runs from 500 to 100,000+ pieces.
500 to 100,000+ pcs
Titanium Grade 5 Dental Implant Post & Bone Screw
Swiss turned for a medical device manufacturer requiring intricate thread geometry, micro-cannulation through-holes, and tight hex drive features. Machined in a single operation with zero hand deburring required.
tolerance held
surface finish
turnaround
2,500-piece run
- Optical comparator & CMM dimensional inspection report
- Mill test certs (EN 10204 3.1) with heat lot traceability
- Passivation certs per ASTM A967 / ASTM F86
- Certificate of Conformance per medical purchase order
Swiss Turning vs. Standard Lathe vs. CNC Milling
Choose the right manufacturing method based on geometry, tolerances, and batch size.
Stocked Materials for Swiss Turning
Precision ground round bar stock in metals, medical alloys, and engineering plastics.
Titanium Alloys
Ti-6Al-4V (Grade 5), Ti-6Al-4V ELI (Grade 23), Commercially Pure Titanium (Grade 2). Ideal for biocompatible implants, dental screws, and aerospace pins.
Stainless Steels
303, 304/304L, 316/316L, 17-4 PH, 440C, Custom 455. Excellent corrosion resistance, high tensile strength, and medical compliance.
Copper & Brass Alloys
C36000 Free-Cutting Brass, C17200 Beryllium Copper, Tellurium Copper C14500. Perfect for gold-plated electrical contacts and probe tips.
Specialty & Superalloys
Inconel 718, Kovar, Nitronic 60, Hastelloy C-276, Nitinol. High-temperature and controlled-expansion applications for aerospace and energy.
Medical Plastics
PEEK (Unfilled & 30% Glass Filled), Delrin (POM-H), PTFE (Teflon), Ultem 1000, Torlon 4203. Biocompatible, autoclavable, and dimensionally stable.
Alloy & Tool Steels
4140, 4340, A2, D2, M2 tool steel. High wear resistance and toughness after vacuum heat treating for mechanical shafts and dowels.
DFM Tips for Swiss Turned Parts
Optimize your 3D CAD models and drawings for maximum Swiss machining efficiency.
1. Precision Ground Bar Stock
Because the bar slides through a guide bushing, use h8 diameter tolerance precision ground bar stock to prevent binding or loose play.
2. Thread Relief Grooves
Provide a thread relief necking groove at thread shoulders (minimum 1.5x thread pitch) to allow clean single-point thread tool retraction.
3. Corner Radii & Chamfers
Specify internal corner radii of at least R 0.010" (0.25 mm) and external 45° lead-in chamfers to ease automated tool engagement and deburring.
Swiss Machining Demand Across Greensboro
How demand for small turned parts breaks down across Greensboro.
Aerospace & MRO
Between HondaJet new-make production and HAECO heavy maintenance, Greensboro is one of the few metros where OEM and MRO turned-hardware demand sit on the same airfield. Both consume Swiss-geometry parts: control linkage pins, fuel system fittings, static port fittings and instrument fasteners in 303 stainless, 2024 and 7075 aluminum and titanium. RivCut turns them with guide bushing support for concentricity to 0.0002 inches TIR, and ships full material certs and first article reports, whether the paperwork standard is new-production AS9100-style or repair-side documentation.
RF & Semiconductor Test Hardware
Qorvo's Greensboro campus, the legacy RF Micro Devices operation, anchors an RF semiconductor cluster whose test and packaging equipment runs on small precision turned parts. Spring-probe style contact pins, connector pins, RF feedthrough bodies and gold-platable brass or beryllium copper terminals all fit the Swiss envelope, most under 0.125 inches in diameter with length-to-diameter ratios past 20:1. Live tooling and sub-spindle work let us finish cross-drilled and slotted pin geometry in a single setup, which matters when a fixture refresh needs 2,000 identical pins, not 2,000 nearly identical ones.
Medical & Micro Devices
Piedmont Triad medical device work draws on machining skills carried over from the region's textile machinery era, and the clinical base around Cone Health keeps device demand local. The Joint School of Nanoscience and Nanoengineering pushes the miniature end: sensor bodies and electrode components at diameters a conventional lathe cannot hold straight. Swiss turning covers bone screw blanks, luer fittings, cannulated pins and PEEK insulators from 0.020 inch stock with Ra 16 microinch finishes as machined, plus the lot traceability an FDA-regulated program requires.
Questions Greensboro Teams Ask First
Quoting, tolerances and logistics for Greensboro projects.
Swiss Turning Services Near Greensboro
Put Our Swiss Lathes to Work for Greensboro
One upload gets Greensboro teams pricing, lead times and a guide bushing feasibility check.