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.
Where Savannah Engineering Talent Comes From, and What It Buys
Few cities of Savannah's size carry this much aerospace engineering density. Gulfstream Aerospace headquarters its entire company here, designing and assembling the G500 through G700 lines on the north side of the airport, and that concentration of airframe, systems and manufacturing engineers shapes what local suppliers are asked to build. Savannah Technical College runs aviation programs that feed the Gulfstream workforce, Georgia Southern University teaches manufacturing and mechanical engineering at its Armstrong campus in town and Georgia Tech-Savannah adds professional engineering education on the westside. The result is a buyer community that writes real drawings, calls out concentricity and expects first article documentation.
Those buyers order Swiss work because their parts are small, long relative to diameter and unforgiving. A bleed air fitting or a control linkage pin at 0.25 inch diameter with a 20:1 length ratio will taper and chatter on a conventional lathe. On a sliding headstock machine the guide bushing supports the bar at the point of cut, so the part comes off straight, concentric within 0.0002 inch TIR and finished near Ra 16 microinches without grinding.
Demand in Savannah is not only aerospace. Hunter Army Airfield keeps a combat aviation brigade's helicopters flying, JCB builds construction equipment in neighboring Pooler, Mitsubishi Power services heavy gas turbines at its Savannah Machinery Works and the Port of Savannah wears out hydraulic and sensor hardware on cranes that run around the clock. All of it consumes turned components in the exact size range Swiss lathes were built for.
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.
Where Swiss Machining Fits in Savannah
From prototypes to bar-fed production, this is Savannah's Swiss workload.
Business Aviation & Aerospace
Gulfstream's Savannah campus and the supplier network around it consume turned hardware at steady, repeatable volumes: fuel and hydraulic fittings, clevis pins, static port fittings, electrical standoffs and instrument fasteners. Even Tier 2 and Tier 3 vendors are expected to deliver AS9102-style first articles and full traceability. RivCut Swiss turns these parts from 2024 and 7075 aluminum, 303 and 17-4 PH stainless and Ti-6Al-4V, with mill certs and inspection reports attached to every lot.
Defense & Army Aviation
Hunter Army Airfield hosts one of the Army's largest aviation footprints, and Fort Stewart sits 40 minutes down I-95, so Savannah's defense contractors support rotorcraft, ground vehicles and comms systems on sustainment schedules that do not slip. Swiss geometry covers a large share of that hardware: contact pins, connector pins, valve spools, sensor housings and slender actuator shafts. RivCut is DDTC registered and ITAR-controlled manufacturing capable, and we quote defense work with export control handling stated up front.
Heavy Equipment, Energy & Port Machinery
JCB's North American plant in Pooler builds loaders and telehandlers, Mitsubishi Power's Savannah Machinery Works rebuilds utility scale gas turbines and the Port of Savannah runs ship to shore cranes that grind through hydraulic and sensing components. Hyundai's Metaplant west of the city adds an EV supply chain on top. These operations buy valve spools, gauge pins, dowel pins, ferrules and wear bushings in 4140, 440C, 17-4 PH and bronze, often reordered quarterly, which is exactly the cadence bar fed Swiss production is priced for.
What Savannah Engineers Ask Us
Everything Savannah buyers ask before the first PO.
Swiss Machining Beyond Savannah
Swiss Precision, Delivered to Savannah
From first article to bar-fed production, quoting for Savannah starts with one CAD upload.