VT machining provides CNC Swiss Machining Inconel for customers who need accurate, repeatable Inconel components. Because Inconel is high-temperature strength and oxidation resistance, we adapt the process to suit — controlling the variables that matter for this alloy.
Starting Parameters for CNC Swiss Machining Inconel
| Cutting speed (carbide) | 10-30 m/min |
|---|---|
| Feed | 0.05-0.15 mm/rev |
| Spindle speed, Ø8 mm bar | 400-1190 rpm |
| Insert / tool class | ISO H — CBN or fine-grain carbide |
| Coolant | High-pressure emulsion; ceramic inserts run dry for roughing |
| Length-to-diameter capability | up to ~10:1 (slower feeds for this grade) |
Shown for Inconel 718, the most common Inconel grade we see for CNC Swiss Machining. Starting values for Inconel 718, Solution-treated or aged; optimised on the first article.
CNC Swiss Machining Capability for Inconel
- Ø1–32 mm bar
- Slenderness without deflection
- Tolerance to ±0.003 mm
- High-volume small parts
Inconel material properties, finishing options and grade notes are on our CNC Turning Inconel page.
How CNC Swiss Machining Inconel Works
The Inconel bar or billet rotates in the spindle while single-point tools shape outer diameters, bores, faces, grooves and threads. Constant surface speed control keeps cutting conditions stable from large to small diameters.
Every job begins from your CAD model or 2D drawing. Fixturing and tool paths are planned so the most critical dimensions are produced in the most rigid, repeatable setup. Critical dimensions are checked on the first part and monitored through the run.
Achievable Tolerances for CNC Swiss Machining Inconel
| Feature | Standard | Precision |
|---|---|---|
| Outside diameter | ±0.05 mm | ±0.005 mm |
| Bore diameter | H9 | H6 |
| Length / shoulder position | ±0.10 mm | ±0.020 mm |
| Concentricity OD to ID | 0.05 mm TIR | 0.010 mm TIR |
| Roundness | 0.02 mm | 0.005 mm |
| Thread class | 6g / 2A | 4h / 3A |
| Surface finish, as turned | Ra 1.6 µm | Ra 0.4 µm |
Standard is what a normal quotation assumes. Precision is available on nominated features and is priced separately, because it needs extra setups, in-process gauging and CMM verification. Call out only the features that need it — blanket-tightening a drawing is the single most common reason a quote comes back expensive.
Design Tips for CNC Swiss Machining Inconel
A few design choices make a real difference to cost and quality. Consistent diameters, standard thread forms and avoiding extremely long, slender features help Inconel turned parts stay concentric and economical. If you send your model early, we will return practical DFM feedback before you commit to production.
CNC Swiss Machining Tolerances & Surface Finish
Turned Inconel holds diameter tolerances to about ±0.005 mm with concentricity within 0.01 mm and good roundness. Turned finishes of Ra 0.4–0.8 µm are achievable with finishing passes and sharp tooling.
Final tolerances are governed by the material's behaviour, wall thickness and overall stiffness. We give honest DFM feedback if a callout would be costly or better achieved another way.
Applications of CNC Swiss Machining Inconel
CNC Swiss Machining of Inconel supports parts across aerospace, medical, automotive, electronics, semiconductor, energy and general industrial sectors. We scale from one-off prototypes to ongoing production while holding the same quality.
Typical Inconel Parts for CNC Swiss Machining
Illustrative examples of CNC Swiss Machining Inconel parts and the callouts that usually drive the process plan. They show the kind of work that fits this process; they are not specific customer orders.
Bearing spacer
- Material
- Inconel
- Size
- Ø35 / Ø22 × 9 mm
- Key callouts
- Thickness ±0.005 mm, parallelism 0.005 mm
- Batch
- 4,000 pcs
Turned then double-disc ground — thickness this tight is not a lathe job.
Nozzle body
- Material
- Inconel
- Size
- Ø12 × 46 mm
- Key callouts
- Ø0.6 mm orifice ±0.01 mm, internal taper 20°
- Batch
- 600 pcs
Orifice EDM-drilled after turning; a drill wanders at that diameter.
Connector pin
- Material
- Inconel
- Size
- Ø3.0 × 24 mm
- Key callouts
- OD ±0.005 mm, straightness 0.02 mm over length
- Batch
- 20,000 pcs
Swiss-turned from bar with a guide bushing; nothing else holds Ø3 mm over 24 mm.
No drawing yet? Build one in the browser.
Set the metal, dimensions and features, watch the 3D model update as you type, then switch to the 2D sheet to add dimensions and tolerances. Download it or send it straight to us with your RFQ.
What We Need to Quote CNC Swiss Machining Inconel
- GeometrySTEP or IGES for the 3D model, plus a PDF drawing if you have tolerance callouts. A dimensioned sketch is enough to start.
- MaterialThe exact Inconel grade and condition — temper, heat-treat state or hardness. If you are not sure, tell us the function and we will suggest one.
- QuantityPrototype count and the expected annual volume. Both change how the part is made and therefore what it costs.
- TolerancesWhich features are critical. Everything else runs to our standard tolerance, which is what keeps the price sensible.
- FinishSurface treatment, cosmetic requirements, and any faces that must be masked.
- DocumentsWhether you need a material certificate, dimensional report, FAIR or PPAP with the shipment.
Missing something from the list is not a problem — send what you have. We will come back with the specific questions rather than a generic form.
Other Metals for CNC Swiss Machining
Other Processes for Inconel
Send the drawing, the Inconel grade and the quantity. You get pricing, lead time and any DFM notes back — usually within one business day.
Request a QuoteFrequently Asked Questions
Does CNC Swiss Machining Inconel require dedicated tooling?
Most Inconel turning work uses standard cutting tools and CNC programs; dedicated fixtures are made only when geometry or volume requires them.
What surface finish is achievable on Inconel with CNC Swiss Machining?
Surface finish on Inconel is controlled to your specification; we confirm the achievable Ra against your callout.
Why is Inconel a good choice for CNC Swiss Machining?
Inconel is high-temperature strength and oxidation resistance, which makes it well suited to CNC Swiss Machining. We tune the process to the alloy so the finished Inconel turning part meets your dimensional and functional requirements.
What tolerances can you hold for CNC Swiss Machining Inconel?
Achievable tolerances for Inconel turning depend on the alloy, geometry and feature size. Turning holds diameter tolerances to around ±0.005 mm with concentricity within 0.01 mm. Exact figures are confirmed against your drawing callouts.
What is CNC Swiss Machining Inconel and how is it done?
CNC Swiss Machining Inconel refers to swiss-type machining guides bar stock through a sliding headstock for high-accuracy small, slender parts. Applied to Inconel — high-temperature strength and oxidation resistance — VT machining produces each part to your CAD drawing, selecting parameters from your tolerance, finish and quantity requirements.
What material thickness or size range suits CNC Swiss Machining Inconel?
Turned Inconel parts are produced from bar or chuck stock across a wide diameter range.