Custom CNC Turning Services
Precision CNC turning services for shafts, pins, bushings and rotational components. IT6-IT7 tolerance with SPC data and first-article inspection for export-grade B2B supply.
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Custom CNC Turning Services for Precision Rotational Components
CNC turning is fundamental to producing shafts, pins, bushings, flanges and other rotational parts that demand tight concentricity and surface finish control. At Zhuhai ChunTian, our turning capabilities cover both bar-fed production for high-volume small-diameter parts and chucking operations for larger custom components. Every turned part goes through our standard pre-production workflow: drawing review, tolerance risk assessment, and first-article approval before batch production begins.
For machinery importers, distributors and EPC buyers, this means you receive turned components with full dimensional traceability - SPC data, first-article inspection reports, material certificates, and QC photo packs - documentation that your end customers and quality teams need to approve incoming parts without delay.
Machining Capabilities & Specificationsions
| Parameter | Specification |
|---|---|
| Configuration | CNC turning (bar-fed and chucking operations) |
| Tolerance Range | IT6–IT7 as standard; tighter tolerances subject to geometry review |
| Surface Finish | Down to Ra 0.8 µm with appropriate tooling |
| Inspection Method | SPC data collection, first-article inspection (FAI), dimensional verification |
| File Formats Accepted | STEP, IGES, XT, DWG, or solid model files |
What We Turn
| Component Type | Typical Applications |
|---|---|
| Shafts and stepped shafts | Motors, pumps, gearboxes, transmissions |
| Pins and dowels | Locating, hinge, pivot, assembly alignment |
| Bushings and sleeves | Bearing seats, guide bushings, spacer sleeves |
| Flanges and collars | Pipe connections, mounting hubs, stop rings |
| Threaded components | Custom fasteners, adapters, threaded shafts |
| Custom rotational parts | Per buyer drawing or sample |
Materials for CNC Turning
| Material Category | Grades | Typical Use |
|---|---|---|
| Aluminum alloys | 6061, 7075 | Lightweight shafts, spacers, housings |
| Stainless steel | 304, 316, 17-4PH | Corrosion-resistant pins, bushings, fittings |
| Carbon steel | 1045, 1060, Q235 | Shafts, couplings, structural pins |
| Tool steel | H13, D2 | Wear components, guide pins, tooling |
| Brass | Various | Valve bodies, fittings, electrical components |
| Engineering plastics | Various | Insulating bushings, low-friction sleeves |
Material test certificates (mill test reports) can be provided with your order. Please specify material grade and any certification requirements in your inquiry.
Core Features
- Bar-fed and chucking operations: Bar-fed turning for high-volume small-diameter parts with minimal operator intervention; chucking operations for larger custom components that cannot be bar-fed.
- IT6–IT7 tolerance capability: Tight dimensional control on diameters, lengths, and concentricity—suitable for precision rotational components in machinery and equipment assemblies.
- SPC and FAI documentation: Statistical process control data and first-article inspection reports are generated for production runs, providing the dimensional traceability that B2B buyers require for incoming inspection.
- Turning combined with milling: Depending on part geometry, turned parts can be supplied with milled features (flats, keyways, cross-holes) without transferring to a separate facility.
- Full-process traceability: Every project follows our standard workflow: drawing review, tolerance risk assessment, sample gate approval, FAT records, QC photo packs, and shipment checklists.
Product Advantages for B2B Buyers
- Documentation that passes incoming inspection: SPC data, FAI reports, material certificates, and QC photo packs travel with every shipment—reducing delays at your incoming quality control.
- Pre-production risk identification: Our engineers review your drawings before quoting and flag tolerance risks, manufacturability issues, and material availability—before production starts.
- Consistent quality across volumes: The same machines, tooling, and inspection criteria apply whether you order 50 prototype parts or 10,000 production units.
- Reduced supplier coordination: Turned components can be supplied as part of larger assemblies because we also handle sheet metal fabrication, welding, and CNC milling in-house.
- Quote-ready technical files: We turn your drawings into technical files complete with tolerance risk notes and inspection plans—giving your engineering and quality teams the information they need to make purchasing decisions.
Quality Certifications
Our facility operates under multiple certified management systems:
- IATF 16949:2016 – Automotive quality management
- ISO 9001 – Quality management
- ISO 14001:2015 – Environmental management
- ISO 13485:2016 – Medical device quality management
- ASME authorized – Pressure equipment fabrication
Frequently Asked Questions
What file formats do you accept for CNC turning?
STEP, IGES, XT, DWG, or solid model files. For threaded features, please specify thread standard (metric, UN, etc.) and tolerance class. Send your CAD model and we will review it for manufacturability.
What is your typical tolerance for turned parts?
We work to IT6–IT7 tolerances as standard. Tighter tolerances may be achievable depending on geometry and material—please specify your requirements in the inquiry and our engineers will confirm feasibility.
Can you supply material certificates with turned parts?
Yes. Material test certificates (mill test reports) can be provided with your order. Please specify material grade and any certification requirements in your inquiry.
Do you offer turning combined with milling on the same part?
Depending on part geometry, we can supply turned parts with milled features. Our facility handles both CNC turning and CNC milling in-house, reducing the need for multi-supplier coordination.
Can you produce turned parts as part of a larger assembly?
Yes. Because we handle sheet metal fabrication, welding, and CNC machining under one roof, turned components can be supplied as part of welded or sheet metal assemblies—reducing your supplier coordination effort.
Ready to discuss your CNC turning project?
Send us your drawings with material specifications and tolerance requirements. Our engineering team will review them and respond with a manufacturability assessment and quotation.
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