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.
Swiss Turning for the Healthcare City Supply Chain
One company defines New Brunswick manufacturing gravity: Johnson & Johnson runs its world headquarters downtown, and the supply chain that feeds its medical device, surgical and pharmaceutical businesses stretches across Middlesex County and the rest of central New Jersey. Bristol Myers Squibb keeps a major campus in the city as well. Device engineers, packaging automation builders and contract manufacturers orbiting these two anchors buy exactly the parts a sliding headstock lathe was built for: bone screws, cannulated instrument shafts, luer fittings and dose metering components, most under half an inch in diameter and unforgiving on concentricity.
The research side of the city compounds that demand. Rutgers University's flagship campus, Robert Wood Johnson University Hospital and the HELIX innovation district under construction next to the train station keep a steady stream of device prototypes, lab instrumentation and translational research hardware moving from CAD to first article. Those programs need one to fifty pieces with medical grade finishes, not a screw machine house minimum.
RivCut serves both ends from our Union City, California shop. Guide bushing support at the cut lets us hold 0.0002 inch TIR concentricity and Ra 16 microinch finishes as machined, live tooling and a sub-spindle finish parts in one setup and ground shipping reaches New Brunswick in 4 to 5 business days, with air freight when a validation build cannot wait.
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.
How New Brunswick Industries Use Swiss Turned Parts
Three local sectors, three very different turned parts. Here is what we machine for New Brunswick teams.
Medical Device & Orthopedics
The Johnson & Johnson ecosystem makes central New Jersey one of the country's largest buyers of implantable and surgical turned components. Bone screws with HA or cortical thread forms, dental implant bodies, cannulated K-wire style shafts and instrument tips are natural Swiss work: Ti-6Al-4V ELI and 316L stainless bar, tight thread concentricity and single setup machining that removes handling marks a graded surface cannot tolerate. RivCut turns these with full material traceability, and first article inspection reports ship on request for design history files.
Pharmaceutical Processing & Packaging
Bristol Myers Squibb's New Brunswick campus and the pharma corridor around it depend on filling lines, autoinjector assembly cells and analytical instruments that wear out small precision components on production schedules. Dosing needles, valve spools, guide pins, ferrules and stainless standoffs all fit within our 1.50 inch bar capacity. We machine replacements and line upgrade hardware from 316L, 17-4 PH and PEEK to print, often working from a worn sample and a sketch so a stopped filling line is not waiting on an OEM part number.
University Research & Lab Instrumentation
Rutgers engineering and biomedical labs, hospital research groups and the startups the HELIX district is built to attract prototype constantly, and micro turned parts are usually the pacing item. Electrode bodies, optical ferrules, connector pins, microfluidic fittings and slender probe shafts with length to diameter ratios past 20 to 1 come off our Swiss lathes straight and burr free. No minimum order means a graduate lab can order three pieces, then scale the same part number to a bar fed production run if the device gets licensed.
Swiss Machining FAQ for New Brunswick Buyers
Lead times, tolerances, materials and shipping for New Brunswick orders.
Swiss Machining Near New Brunswick
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