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 Douglas Aircraft to Space Beach
Few American cities carry a manufacturing identity as continuous as Long Beach. Douglas Aircraft started building airplanes beside the airport in 1941, the plant turned out DC transports and later MD-80s under McDonnell Douglas, and Boeing delivered the final C-17 Globemaster III from the same site in 2015. When the airframe line closed, the workforce and the industrial real estate did not disappear. They became the foundation for what the city now calls Space Beach, with Rocket Lab producing Electron and Neutron hardware, Relativity Space developing Terran rockets and Vast building commercial space station modules, all within a short drive of Long Beach Airport.
Every one of those programs consumes Swiss turned components in quantity. A launch vehicle avionics stack alone carries hundreds of connector pins and contact pins, and its propulsion plumbing is a catalog of fuel fittings, valve spools and sensor housings in stainless, titanium and Inconel. Sliding headstock lathes with guide bushing support are the right tool for that hardware because the bar is held at the point of cut, so a long thin part comes off straight and concentric to 0.0002 inches TIR without a secondary grind.
The other half of the local economy makes its own demands. The Port of Long Beach moves cargo around the clock on cranes, conveyors and hydraulic systems that wear out gauge pins, bushings and spools on no particular schedule, and Cal State Long Beach engineering programs feed a steady stream of hardware startups that need one prototype this month and five thousand pieces next year. RivCut serves both from Union City, no minimum order, ground freight arriving in Southern California in about 1 to 2 business days.
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.
What Long Beach Teams Send to Our Swiss Lathes
What Long Beach buyers actually order, sector by sector.
Space & Launch Vehicles
Rocket Lab, Relativity Space and Vast anchor the Space Beach cluster, and their supplier networks buy exactly the geometry Swiss lathes exist for: propellant line fittings, pressure port bodies, pyro connector pins and valve components in 316L, 17-4 PH, titanium and Inconel 718. RivCut turns these with live tooling and sub-spindle finishing in a single setup, so cross-drilled ports and wrench flats do not add a second operation, and ships with full material traceability for flight hardware review.
Aerospace & Defense Suppliers
The Douglas and Boeing years left Long Beach with a deep bench of machine shops, MRO operations and Tier 2 suppliers that still feed defense and commercial aviation programs across the LA basin, from Torrance to El Segundo. Their recurring buys are classic bar-fed work: clevis pins, threaded standoffs, bushings and instrument fasteners in 2024, 7075, 303 stainless and Ti-6Al-4V. We run these from 500 to 100,000 plus pieces with AS9102-style first article reports and mill certs on every lot.
Port & Industrial Equipment
The Port of Long Beach is one of the busiest container ports in the country, and the cranes, straddle carriers and hydraulic systems that keep it moving chew through small precision components. Valve spools, gauge pins, grease fittings and proximity sensor housings all fall inside Swiss lathe geometry, and we regularly machine replacements from 4140, 440C and bronze working from a print, or from a worn sample when the OEM part number is a six week wait.
Common Questions from Long Beach Teams
How Swiss turning, quoting and shipping work for Long Beach teams.
Swiss Machining in the Long Beach Region
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