Why Choose DeepLink for Custom CNC Turning Services

DeepLink Metal Fab operates 15+ CNC turning centers and Swiss-type lathes, from horizontal 2-axis lathes to advanced multi-axis mill-turn centers with sub-spindles and live tooling. Delivering plus-minus 0.005mm dimensional precision on cylindrical parts from 3mm to 400mm diameter. As an ISO 9001:2015 certified custom CNC turning service provider in China, we serve automotive, hydraulic, medical, semiconductor, and industrial equipment OEMs worldwide.

CNC Turning Capabilities

• Machine Types: 2-axis CNC lathes, 3-axis lathes with driven tools, 4-axis mill-turn with Y-axis, Swiss-type sliding headstock lathes, bar feeders
• Materials: Aluminum (6061/7075/2024), stainless steel (303/304/316/17-4PH), brass (C36000), copper, titanium (Grade 2/5), tool steel, engineering plastics (PEEK/POM/PTFE)
• Dimensional Tolerance: plus-minus 0.005mm
• Surface Roughness: Ra 0.4 micrometers (down to Ra 0.2 with polishing)
• Part Size Range: Diameter 3mm to 400mm, length up to 1500mm
• Supported CAD Files: STEP, STP, SLDPRT, IGES, X_T, DWG
• Lead Time: 2-3 days for prototypes, 10-20 days for production
• Order Volume: 1 piece to 500,000+ units per year

What is CNC Turning?

CNC turning is a subtractive machining process where a stationary cutting tool contacts a rotating workpiece to remove material and produce cylindrical parts. It is the fastest and most cost-effective process for parts with rotational symmetry: shafts, bushings, pins, connectors, fittings, and hydraulic components.

Common CNC Turning Methods

• 2-Axis CNC Turning: Tool moves along X and Z axes. Ideal for basic cylindrical parts: shafts, bushings, spacers.
• 3-Axis Turning with Live Tooling: Adds driven tools for milling flats, drilling cross-holes, and threading. Combines turning and light milling in one setup.
• Swiss-Type Turning: Sliding headstock holds workpiece close to cutting tool. Ideal for small-diameter precision parts (3-32mm) requiring long, slender geometries: medical screws, connectors, watch components.
• Mill-Turn: Multi-axis machines with Y-axis and sub-spindle enable complete machining of complex turned parts in one setup, eliminating secondary operations.
• Bar Feed Automation: Bar feeders enable unattended lights-out production for high-volume turned parts (10,000+ pieces).

Key Advantages of Custom CNC Turning

• Highest Speed for Cylindrical Parts: 2-5x faster than milling for turned geometries
• Tight Tolerances: plus-minus 0.005mm concentricity and diameter accuracy
• Excellent Finish: Ra 0.4 micrometers turned finish, ideal for sealing surfaces
• Automated Bar Feed: Continuous production without operator intervention
• Cost-Effective: Lower per-piece cost than milling for cylindrical geometries

Common Applications of Custom CNC Turned Parts

Custom CNC turning serves industries including automotive (drive shafts, pistons, hydraulic pistons), aerospace (fasteners, bushings, hydraulic fittings), medical devices (bone screws, dental implants, surgical instrument shafts), hydraulics (cylinders, valve spools, fittings), semiconductor (precision electrodes, chamber parts), and hardware (custom fasteners, threaded components).

How DeepLink Custom CNC Turning Service Works

From CAD file upload to precision-turned parts delivered worldwide, our custom CNC turning workflow ensures accuracy, high-volume efficiency, and full quality traceability.

1. Upload CAD Files and Get Instant Quote

Upload 3D CAD files (STEP, STP, SLDPRT, IGES) with target quantity through our secure quote portal. Our engineering team responds within 24 hours with material, thread callouts, surface finish, and per-piece pricing.

2. Free DFM Analysis with Turning Optimization

Our engineers review every drawing for CNC turning manufacturability, checking length-to-diameter ratio, thread specifications, undercut accessibility, and material selection for chip control and machinability.

3. Material Sourcing and Bar Preparation

Certified bar stock from qualified mills cut to length with cold-sawn or center-drilled ends for chuck grip and steady-rest support during turning. Full material traceability from mill to finished part.

4. Precision CNC Turning Production

2-axis to mill-turn multi-axis lathes with automated bar feeders and live tooling deliver plus-minus 0.005mm accuracy. Swiss-type lathes handle precision small-diameter parts for continuous unmanned production.

5. Multi-Stage Quality Inspection and Global Shipping

Every batch undergoes dimensional inspection using CMM, optical projection, and surface roughness testers. Thread verification with go/no-go gauges. Full inspection reports (FAIR/PPAP) provided on request. DDP shipping to 50+ countries.

Available Surface Finishes for Custom CNC Turned Parts

DeepLink offers comprehensive post-turning surface finishing to enhance corrosion resistance, appearance, and functional properties of your custom CNC turned parts.

Anodizing (Aluminum)

Type II clear/color anodizing and Type III hard anodizing for aluminum turned parts requiring cosmetic finish or wear resistance. Custom color matching including black, red, blue, and clear.

Plating

Nickel, chrome, zinc, tin, silver, and gold plating for corrosion protection, wear resistance, and electrical conductivity on steel and brass turned parts. Standard for hydraulic pistons, connectors, and hardware.

Polishing and Passivation

Mechanical polishing to mirror finish (Ra 0.05 micrometers) for stainless steel and titanium turned parts. Chemical passivation restores protective chromium oxide layer for maximum corrosion resistance in medical and food-grade applications.

Thread Rolling and Knurling

Cold-formed thread rolling produces stronger, work-hardened threads compared to cut threads. Straight or diamond knurling for grip surfaces on knobs, handles, and adjustment components.

Heat Treatment

Hardening, tempering, and stress-relieving to achieve target hardness (HRC 30-60) for tool steel, alloy steel, and heat-treatable turned components.