What size parts can be machined on Swiss CNC lathes?

RivCut Swiss machining handles bar diameters from 0.020 in (0.5 mm) up to 1.50 in (38 mm). We specialize in miniature, micro, and long slender parts with length-to-diameter ratios exceeding 20:1.

Can Swiss CNC machines perform milling operations?

Yes. Our multi-axis Swiss lathes feature live tooling, sub-spindles, and Y/B-axis milling. We can turn, cross-drill, slot, thread, and mill off-center features in a single machine setup without secondary operations.

What industries use Swiss machined components?

Swiss turned parts are widely used in medical devices (bone screws, dental implants, surgical pins), aerospace & defense (micro fuel nozzles, sensor pins, valve spools), electronics (contact pins, micro connectors), and robotics.

What surface finishes can be achieved with Swiss turning?

Because the guide bushing prevents deflection and chatter, Swiss machining yields exceptionally fine surface finishes, typically Ra 16 to Ra 32 µin (0.4 to 0.8 µm) as-machined, and down to Ra 8 µin (0.2 µm) with electropolishing or burnishing.

What is the minimum order quantity for Swiss machining?

We have no minimum order quantity. You can order single prototypes or production runs up to 100,000+ pieces with automated bar feeding and lights-out manufacturing.

Precision Swiss CNC machined titanium medical screw

Swiss turned micro brass electrical connector pins

Micro Precision Platform

Swiss CNC Machining
Services

Sliding headstock CNC lathes designed for long, thin, micro-miniature, and high-precision turned components. Guide bushing support eliminates bar deflection, enabling tight tolerances to ±0.0001" and complex turned-milled geometry in a single setup.

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Upload 3D CAD files or 2D prints for immediate pricing & guide-bushing DFM review.

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Swiss CNC Technology

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.

Why RivCut

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.

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Our Capabilities

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 bar

High 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 20:1

Multi-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 live

Dual-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 parts

Medical & 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 medical

High-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

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Swiss CNC turned titanium medical screw and brass connector pins

Optical & CMM Verified — 100% Feature Pass

Real Part. Real Results.

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.

±0.00015"

Outer diameter
tolerance held

12 Ra

As-machined thread
surface finish

5 Days

First article delivery
turnaround

0 Defect

Lot pass rate on
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

Process Comparison

Swiss Turning vs. Standard Lathe vs. CNC Milling

Choose the right manufacturing method based on geometry, tolerances, and batch size.

Feature / Attribute	Swiss CNC Machining	Standard CNC Turning	5-Axis CNC Milling
Primary Geometry	Slender cylindrical, micro pins, threaded shafts	Bushing, disc, standard length shafts	Prismatic, complex 3D contoured blocks
Max L/D Ratio (No Tailstock)	20:1 + (Zero deflection)	3:1 max without tailstock	N/A (Workpiece clamped)
Achievable Tolerance	±0.0001 in (±0.0025 mm)	±0.0005 in (±0.012 mm)	±0.0002 in (±0.005 mm)
As-Machined Surface Finish	Ra 16 µin (0.4 µm)	Ra 32 µin (0.8 µm)	Ra 32–63 µin (0.8–1.6 µm)
Bar Stock Size Range	0.020" to 1.50" (0.5 to 38 mm)	0.25" to 12.0" (6 to 300 mm)	Up to 24" x 18" x 12" block
Best For Batch Sizes	10 to 100,000+ pieces	1 to 5,000+ pieces	1 to 1,000 pieces

Materials

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.

Design Guidelines

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.

FAQ

Swiss Machining FAQ

Common questions about Swiss CNC turning, materials, lead times, and quoting.

What is Swiss CNC machining?

Swiss CNC machining uses a sliding headstock lathe with a guide bushing. The bar stock feeds through the guide bushing past the cutting tool, providing rigid support directly next to the cut. This eliminates bar deflection and allows ultra-precise turning of long, thin, or micro parts down to ±0.0001" tolerance.

What is the difference between Swiss turning and standard CNC turning?

Standard CNC lathes move the cutting tool along a stationary rotating workpiece, which can cause slender parts to flex. Swiss lathes move the bar stock through a stationary guide bushing, machining right next to the support point for zero deflection, tighter tolerances, and higher aspect ratios (>20:1).

What size parts can be Swiss turned at RivCut?

We machine bar diameters from 0.020 in (0.5 mm) up to 1.50 in (38 mm). We specialize in micro-miniature parts, long slender shafts, medical bone screws, electrical contacts, and valve spools.

Can Swiss CNC machines perform milling and cross-drilling?

Yes! Our Swiss lathes feature up to 12 axes with live tooling and sub-spindles. We can turn, cross-drill, mill flats, cut keyways, thread-whirl, and finish the back-side of parts in a single machine cycle.

What materials are compatible with Swiss machining?

We machine titanium (Ti-6Al-4V Gr 5/23), stainless steel (303, 304, 316L, 17-4 PH, 440C), free-machining brass C36000, beryllium copper, tool steels (A2, D2), superalloys (Inconel 718), and engineering plastics like PEEK, Delrin/POM, and PTFE.

How fast can I get a Swiss machining quote?

Simply upload your STEP file or 2D technical drawing on our instant quote portal. Our team will review the geometry and guide bushing setup, providing pricing within 24 hours.

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