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.
What Memphis OEMs and Startups Each Want From a Swiss Shop
Two very different Swiss machining customers share the Memphis metro. On one side sit the established device OEMs, Smith+Nephew runs its global orthopedic headquarters here, Wright Medical, now part of Stryker, keeps extremity and biologics operations in town, and Medtronic routes spinal devices through a major distribution center next to the FedEx hub. Their supply chains buy validated processes: locked revisions, full lot traceability, first article reports and bar fed runs of 5,000 to 100,000 cannulated screws or instrument shafts that measure the same at piece one and piece fifty thousand.
On the other side are the founders coming out of EPIcenter Memphis and the FedEx Institute of Technology at the University of Memphis, building logistics sensors, connected facilities hardware and warehouse automation devices. They need the opposite of a production contract: five contact pins, a dozen threaded standoffs, one revised sensor housing by Friday, quoted in minutes without a purchasing department. Swiss turning serves both because the same sliding headstock lathe that holds 0.0002 inches TIR across a 40,000 piece implant run will also cut a one off prototype pin without setup drama.
Location helps too. Ground freight from our California shop reaches Memphis in about 3 to 4 business days, and for the deadlines that logistics city buyers know best, air and expedite options are always on the table.
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.
Memphis Applications for Swiss Turning
The Memphis part families that belong on a Swiss lathe.
Orthopedic & Medical Devices
The Smith+Nephew headquarters, Wright Medical's Stryker operations and Medtronic's spinal distribution give Memphis one of the deepest orthopedic supplier ecosystems in the country, and almost everything that ecosystem buys in the small diameter range is Swiss lathe work. We turn bone screws, cannulated components, surgical instrument shafts and trial hardware from 316L, titanium Ti-6Al-4V and PEEK, with thread forms to spec, Ra 16 microinch as machined finishes and the material certs and first article documentation implant supply chains require.
Defense & Military Logistics
Naval Support Activity Mid-South in Millington and the Defense Logistics Agency distribution operation in Memphis keep steady demand for machined spares flowing through the metro, and much of it is turned hardware: connector pins, contact pins, valve spools and fuel system fittings for support equipment and maintenance programs. RivCut is DDTC registered and quotes these parts with the traceability defense procurement expects, and the FedEx hub means finished hardware leaving Memphis reaches any base in the country overnight.
Hardware Startups & Warehouse Automation
The distribution corridor along I-40 runs sorting systems and mobile robots around the clock, and Memphis founders backed by EPIcenter and the FedEx Institute of Technology build the sensors and devices that feed it. Prototype quantities are where Swiss shines for this crowd: slender shafts that stay straight past 20 to 1 length to diameter, sensor housings with live tooled flats and cross holes finished in one setup and pin gauges or ferrules in whatever quantity the pilot deployment needs, one piece or one thousand.
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Memphis Parts, Machined to ±0.0001 in
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