Live-tool turn-mill
Turning plus milling, drilling, and tapping in one setup to reduce secondary ops on complex rotational parts.
CNC Turning Service for Complex and High-Tolerance Parts
Live-tool CNC turning and turn-mill for shafts, housings, and precision rotational parts — tolerances and process confirmed via DFM before production.
Turning proof points
Concentricity and runout control
Shafts, spools, and flanged housings planned so coaxial diameters and critical runout stay intentional — confirmed via DFM.
Tolerances confirmed via DFM
Standard delivery ±0.10 mm unless the drawing specifies otherwise. Selected features can reach ±0.01 mm — confirmed via DFM before quoting.
What we provide
CNC turning and live-tool turn-mill for shafts, pins, valve spools, flanged housings, and other rotational parts. Swiss-style covers small diameters; chuck turning handles larger OD work (ref. up to about Ø250 mm). Concentric features, threads, and keyways are planned so mating milled parts stay consistent under one process owner.
Process flow
RFQ / CAD review
Upload STEP/IGES plus 2D PDF for diameters, threads, runout, and critical datums.
DFM
We review concentricity, thin walls, groove access, thread classes, and which limits need tight process control.
Material & process planning
Bar stock, chucking strategy, and live-tool plan matched to grade and geometry.
Machining
Turning and turn-mill cycles with setup verification after tooling or fixture changes.
Inspection
Dimensional and thread verification per drawing — shop gauges and CMM as needed.
Shipping
Protected packaging for shafts and threaded parts; documentation per PO.
CNC turning specifications
| Item | Capability |
|---|---|
| Processes | CNC turning, live-tool turn-mill, drilling, tapping; Swiss-style for small diameters |
| Materials | Aluminum, stainless, steels, brass/copper alloys, engineering plastics — see material pages |
| Typical tolerance | ±0.10 mm standard delivery when unspecified; ±0.02–0.05 mm and ±0.01 mm on selected features — confirmed via DFM |
| Diameter range (ref.) | Swiss-style roughly Ø0.5–32 mm; chuck turning up to about Ø250 mm — confirm per part |
| File formats | STEP / STP, IGES; 2D PDF recommended for critical diameters, threads, and GD&T |
| Inspection options | Micrometers, thread plug/ring gauges, CMM as required; FAI and reports on request; scope per drawing |
Materials and surface finishes
Aluminum CNC machining
Round and hex stock for shafts, spacers, and fittings.
Steel CNC machining
Carbon, alloy, and stainless bar for durable rotational parts.
Copper CNC machining
Brass and copper alloys for fittings and conductive components.
Plastic CNC machining
POM, PTFE, PEEK, and nylon for bushings and insulation parts.
CNC surface finishes
Plating, passivation, and related finishes with dimensional notes.
CNC materials guide
Grade comparison and selection guidance.
Turn-mill shaft evidence
Flanged shafts with stepped diameters, oil holes, flats, and threads show live-tool turn-mill work in one process family. Concentric datums and mating faces are planned so runout and coaxial limits stay consistent with the drawing — the same discipline we apply to spools and servo shafts.
Spools and drive shafts
Hydraulic valve spool
Stepped lands and radial ports where diameter control and surface finish matter for flow.
Servo output shaft
Integrated flange, wrench flats, and keyway for torque transmission in compact drives.
Tolerance and quality
Delivered limits are per drawing and confirmed via DFM. We perform in-house pre-shipment inspection according to the agreed inspection plan — including 100% checks on critical characteristics when that scope is specified for the job. Optional FAI and material test reports (MTR) are available on request. See CNC machining quality control for IQC / IPQC / FQC detail.
Applications
Industrial equipment
Shafts, pins, bushings, and connectors for machinery and automation lines.
Fluid and fitting hardware
Threaded and sealing features where concentricity and surface finish matter.
Precision assemblies
Rotational interfaces that mate with milled housings and multi-axis parts.
CNC turning FAQ
What file formats do you accept?
We accept STEP/STP and IGES. For turning work, a 2D PDF is strongly recommended so critical diameters, threads, runout, and GD&T are unambiguous.
How does CNC turning differ from CNC milling?
Turning rotates the workpiece against the tool — ideal for cylindrical and concentric features. Milling moves the tool across a stationary (or indexed) workpiece — better for pockets, flats, and multi-face prismatic shapes. Many parts use both.
What materials can you turn?
Common metals and engineering plastics including aluminum, stainless, steels, brass, and polymers such as POM and PEEK. Stock form and grade are confirmed during DFM.
Ready to start your CNC project?
Upload your CAD files for a free DFM review and quotation. We typically respond within one business day.