CNC Turning Services for High-Accuracy Parts

CNC turning with concentricity-focused setups for threads, grooves, and bores.
In-process gauging and inspection keep GD&T on target, delivering assembly-ready parts quickly.

CNC Turning Services: precision lathe turning for shafts, bushings, threads and complex mill-turn parts

What is CNC Turning?

CNC turning uses a computer-controlled lathe to create precise cylindrical features—faces, grooves, bores and threads—directly from your 2D/3D drawings. With bar-feed or chucking, live tooling and Y-axis options, we deliver high-accuracy turned parts and complex mill-turn geometries for both prototypes and production.

  • Precision & efficiency: Stable processes, tight dimensional control, repeatable quality for every lot.
  • Complex features: Internal/external threading, undercuts, knurling, cross-holes and light milling in one setup.
  • Material versatility: Aluminum, stainless steel, carbon/alloy steels, brass/bronze, titanium and engineering plastics.
Typical applications: shafts, pins, bushings, sleeves, couplings, fittings, hydraulic/pneumatic components, sensor housings, and connector bodies.

Advantages of CNC Turning

Cylindrical parts

CNC lathes excel at concentric cylindrical parts—shafts, bushings, spacers, and threaded features—with tight tolerances and repeatable results at production speed. With live tooling/Y-axis, flats, cross-holes, and keyways can be added in one setup.

CNC turning is primarily applied to create specific part geometries, but its versatility also supports a wide range of operations, including drilling, boring, threading, and knurling.

By integrating CAD or CAM files, CNC machines follow precise measurements, reducing human error and material waste. This enhances accuracy, lowers costs, and boosts overall productivity.

CNC turning centers provide exceptional flexibility thanks to their wide dimensional range. With capabilities from 0.5 to 18 inches in diameter, they can handle diverse applications and meet the varied requirements of customers.

CNC lathes provide excellent repeatability by producing product batches with unmatched accuracy, allowing your business to maximize output and reduce losses.

cnc-turned-steel-threaded-boss-shoulder

CNC Turning Services

Get custom turned parts in days. From rapid prototypes to production, MEITESI delivers high-accuracy metal and plastic CNC turning with consistent quality.

Certifications
ISO 9001:2015 | ISO 13485:2016 | IATF16949

cnc-turned-stainless-threaded-pin-shoulder
CNC turned stainless pin on grey studio background with single MEITESI mark

Custom CNC Turning Services

With MEITESI CNC lathes and mill-turn centers, we produce custom prototypes and end-use parts for your project. Flats, radial/axial holes, grooves, bores, and threads can be completed in one setup—most orders ship in as fast as 3 days. We focus on efficient, repeatable quality for both metals and engineering plastics. Upload your 3D CAD to receive a fast quote.

Certifications
ISO 9001:2015 | ISO 13485:2016 | IATF16949

CNC Turning Capacity & Size Limits

CNC Turning – Capacity & Typical Quality
Size Metric units Imperial units
Max. turned part (Ø × length) Ø 350 × 500 mm Ø 13.8 × 19.7 in
Through-spindle bar capacity Ø 65 mm Ø 2.56 in
Typical tolerance (turned) ±0.005 mm ±0.0002 in
Concentricity (TIR, typical) ≤ 0.01 mm ≤ 0.0004 in
Surface finish (as-turned) Ra 0.4–3.2 μm Ra 16–126 µin
Surface finish (polished) Ra ≤0.2 μm Ra ≤8 µin

*Adjust values to your actual lathe envelope and QA capability.

Materials for CNC Turning

We machine bar, tube, and billet—favoring free-machining grades for tight size and clean finish.

  • Aluminum: 6061/6082, 7075, 2011

  • Carbon/Alloy Steel: 1018, 1045, 4140, 12L14

  • Stainless: 303, 304/316, 17-4

  • Copper Alloys: Brass C360, Copper C110, Bronze

  • Titanium: Gr2, Gr5

  • Plastics: POM (Delrin), PEEK, PTFE, Nylon, ABS

Finishes & HT available: anodize, passivation, plating; hard-turning ≤55 HRC; as-turned Ra ~1.6–3.2 μm.

CNC Turning Service for Shafts, Bushings, Pins, and Round Parts

CNC turning is the practical choice for round, cylindrical, threaded, grooved, and concentric components. MTSPi CNC machines shafts, pins, bushings, sleeves, spacers, collars, nozzles, inserts, connectors, and other precision turned parts for prototypes and low-volume production.

For accurate sourcing, the drawing should identify critical diameters, bores, threads, shoulders, grooves, runout, surface finish, and mating features. Our team reviews these details before quoting so the turning route supports fit, assembly, and inspection requirements.

Common turned parts

  • Shafts, pins, bushings, sleeves, spacers, collars, threaded fittings, and inserts
  • External turning, boring, facing, grooving, drilling, tapping, and threading
  • Metal and plastic round components for prototypes and production

Buyer checks

  • Diameter tolerance, bore size, concentricity, runout, thread class, and groove width
  • Material behavior for wear, corrosion, friction, strength, and cosmetic finish
  • Edge break and deburring requirements for assembly safety

Inspection options

  • Micrometer, caliper, bore gauge, thread gauge, pin gauge, and runout checks
  • CMM support for datum relationships when required
  • First article inspection for repeat batches

CNC Turning Capability Guide

Buyer needMTSPi CNC supportTypical use case
Shafts and pinsControl outside diameter, shoulders, end features, grooves, and chamfersMotion systems, fixtures, tooling, automation, and connectors
Bushings and sleevesControl bores, wall thickness, concentricity, and surface finishWear surfaces, spacers, bearing supports, and alignment parts
Threaded partsInternal and external threads, undercuts, lead-ins, and thread depth checksFasteners, inserts, fittings, nozzles, and assembly hardware
Prototype and low-volume turningFlexible setup for samples and repeatable small batchesEngineering samples, repair parts, and bridge production

Engineering and Sourcing Notes

Send CAD files, 2D drawings, material grade, quantity, tolerance notes, finish requirements, and inspection requirements. MTSPi CNC can review manufacturability, cost drivers, and quality risks before machining.

Related CNC Service Pages

Use these related pages to compare manufacturing routes, material choices, cost control, and inspection requirements.

FAQ

What parts are best for CNC turning? CNC turning is best for shafts, pins, bushings, sleeves, spacers, collars, threaded fittings, inserts, nozzles, and other round parts.

Can turned parts include milled features? Yes. Flats, cross holes, slots, and side features may require secondary milling or mill-turn compound machining.

What information should I send for a turning quote? Send CAD files, 2D drawings, material grade, quantity, thread notes, critical diameters, runout requirements, surface finish, and inspection needs.

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