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 Turned-Part Supply Chain Behind Lakewood's Device Cluster
Medical device work dominates the Lakewood manufacturing picture. Terumo BCT, one of the largest medtech employers in Colorado, develops and produces apheresis and cell processing systems here, and a ring of smaller device shops and contract engineers has grown up around it. That ecosystem consumes exactly the geometry Swiss lathes were built for: luer fittings, cannulated components, PEEK insulators and 316L pins under half an inch in diameter, machined burr free with Ra 16 microinch finishes straight off the bar.
Federal science is the city's other engine. The Denver Federal Center concentrates more federal agencies than any site outside Washington, and USGS laboratories there keep a steady population of instrument builders, survey equipment techs and calibration engineers on the west side of the metro. Their work turns into RFQs for sensor housings, probe tips, ferrules and standoffs, usually in odd quantities that a screw machine house with a 5,000 piece minimum will not touch. RivCut runs those jobs from one piece up.
Aerospace rounds out the picture. Lockheed Martin Space in neighboring Littleton anchors the Front Range space economy, and Lakewood's small shops and hardware startups feed that cluster with fixtures, test hardware and flight adjacent components. Ground freight from our Union City, CA shop reaches Colorado in 2 to 3 business days, so a Lakewood buyer gets coastal Swiss capacity without coastal lead time pain.
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 Lakewood Industries Use Swiss Turned Parts
Three local sectors, three very different turned parts. Here is what we machine for Lakewood teams.
Medical Device & Life Sciences
The Terumo BCT campus and the device startups around it, plus the clinical engineering base at St. Anthony Hospital on the Federal Center campus, generate constant demand for micro turned medical hardware. RivCut Swiss machines luer fittings, cannulated pins, bone screws and electrode bodies from 316L, titanium and PEEK, with guide bushing support holding concentricity to 0.0002 inches TIR on parts destined for fluid path and implant adjacent assemblies. Lot traceable material certs ship with every order.
Aerospace & Defense Suppliers
Lockheed Martin Space in Littleton and the broader Front Range space cluster pull Lakewood machine shops and hardware startups into flight programs as second and third tier suppliers. The turned content in that work is classic Swiss territory: connector pins, contact pins, fuel fittings and slender shafts with length to diameter ratios past 20 to 1 that would chatter on a conventional lathe. We turn them from 7075, 303 stainless, 17-4 PH and Ti-6Al-4V with first article inspection reports on request.
Federal Science & Instrumentation
The Denver Federal Center puts USGS labs and a dozen other agencies inside Lakewood city limits, and the contractors who build and maintain their field and lab equipment order turned parts in small, urgent batches. Probe tips, ferrules, valve spools and sensor housings in 303, 316 and brass are typical. With no minimum order quantity and live tooling that finishes cross holes and flats in one setup, RivCut quotes a 12 piece instrument job as readily as a 20,000 piece production run.
Swiss Machining FAQ for Lakewood Buyers
Lead times, tolerances, materials and shipping for Lakewood orders.
Swiss Machining Near Lakewood
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