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.
The Swiss Turned Parts Clovis Companies Order Most
Start with the parts list rather than the industry labels. Security and surveillance electronics, the sector Pelco built in Clovis over four decades, runs on turned hardware: contact pins and connector bodies for weatherproof camera interconnects, threaded standoffs for board stacking, lens retaining rings and small stainless sensor housings that seal to IP66. These are classic Swiss lathe parts, under an inch in diameter, high count per assembly and unforgiving on concentricity because a wobbling pin means an intermittent connection in the field.
Healthcare is the other volume buyer. Saint Agnes Medical Center and Clovis Community Medical Center anchor a large clinical base, and California Health Sciences University has pulled pharmacy and medical education into town, which feeds device trial work and lab instrumentation across the Fresno-Clovis metro. That work orders bone screws, luer fittings, electrode bodies and cannulated pins in 316L, titanium and PEEK, parts where a guide bushing supported cut and Ra 16 microinch finishes straight off the machine matter more than any milling capability.
Then there is the equipment economy underneath everything, ag machinery, irrigation and food processing lines serving the surrounding Valley, plus fabricators like Anlin Windows and Doors running high volume production tooling. Their maintenance and OEM orders skew toward hydraulic valve spools, spray nozzle bodies, slender drive shafts and hardened wear pins, often reverse engineered from a worn sample. Ground freight from our Union City shop reaches Clovis in about one business day, so a Monday order can be cutting Tuesday and on a receiving dock the same week.
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.
The Parts Clovis Industries Order Most
A sector-by-sector look at Clovis Swiss turning demand.
Security Electronics & Sensors
The engineering talent Pelco concentrated in Clovis seeded a metro wide base of camera, sensor and connected hardware work, and that hardware consumes micro turned metal. RivCut Swiss machines gold platable brass and phosphor bronze contact pins, machined connector shells, EMI shield ferrules and 303 stainless sensor housings with live tooling flats and cross holes cut in the same setup. Concentricity holds to 0.0002 inch TIR, which is what keeps a pin engaging its socket after a thousand mating cycles outdoors.
Medical & Health Sciences
Between Saint Agnes Medical Center, Clovis Community Medical Center and the health programs at California Health Sciences University, the Fresno-Clovis metro supports device developers, lab instrumentation builders and clinical research teams that prototype in small turned components. We run bone screws and cannulated pins in Ti-6Al-4V, luer fittings and electrode bodies in 316L and PEEK insulators under half an inch in diameter, with full material traceability and no minimum order, so a single prototype set is a normal job, not an exception.
Ag Equipment & Food Processing
The farm equipment dealers, irrigation suppliers and food processing plants around Clovis wear out small precision components on a schedule the harvest does not negotiate. Valve spools, spray nozzle bodies, gauge pins, drive shafts with length to diameter ratios past 20 to 1 and hardened wear bushings all fit Swiss lathe geometry. We machine them in 17-4 PH, 4140, 440C and bronze, frequently working from a sample part and a sketch when the OEM number is obsolete or six weeks out.
Clovis Buyer FAQ
Straight answers on Swiss work shipped to Clovis.
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