Manufacturing service
Custom CNC Turning
CNC turning for precision shafts, bushings, spacers, nozzles, threaded parts, and rotational components.
- External and internal diameters
- Grooves, tapers, and threads
- Bores and concentric features
- Secondary milling review
Service overview
Concentric machining for shafts, fittings, and rotational parts.
CNC turning rotates bar or billet stock against cutting tools to form controlled diameters, faces, shoulders, grooves, tapers, bores, and threads. It is suited to parts where concentricity and rotational geometry drive the design.
The process plan reviews bar size, gripping length, slenderness, runout, bore depth, thread form, cutoff conditions, and any cross holes or flats that require secondary operations.
CNC turning of stepped diameters, shoulders, grooves, and concentric shaft features.
Key capabilities
Process planning connected to the drawing and end use.
The manufacturing route is reviewed around geometry, material behavior, critical features, appearance, inspection, and downstream assembly.
Grooves, tapers, and threads
Bores and concentric features
Secondary milling review
Typical parts
Parts commonly reviewed for cnc turning.
Precision shafts
Bushings
Spacers
Nozzles
Fluid connectors
Threaded fittings
Pins
Valve components
Industries
Applications supported across engineering teams.
Materials
Material options linked to technical guidance.
Surface Finishes
Surface Finishes reviewed for material and application fit.
Tolerances and design guidance
Define what is functionally critical.
Diameter, runout, concentricity, straightness, and thread requirements should be assigned only where functional. Long slender parts, deep bores, material movement, and secondary setups can affect repeatability.
DG 01
Define critical diameters and mating fits on the drawing.
DG 02
State thread standard, class, depth, and gauge expectations.
DG 03
Review long slender sections for deflection risk.
DG 04
Use practical reliefs and transitions at shoulders and grooves.
Quality assurance
Inspection planning starts with the drawing.
Inspection points are selected from the controlled drawing, functional risk, process behavior, appearance criteria, and documentation requested for the project.
Diameter and length verification
Runout or concentricity checks when specified
Thread gauge inspection
Burr, edge, and surface condition review
CMM inspection supportOptical measurement supportCalipers and micrometersThread and pin gaugesInspection documentation support
Manufacturing workflow
A controlled route from RFQ to shipment.
The exact route changes with process and project risk, but each stage keeps the approved drawings and requirements in view.
- 01
Rotational feature review
Review diameters, bores, shoulders, threads, grooves, and secondary features.
- 02
Bar and setup planning
Select stock, gripping approach, tool sequence, and inspection method.
- 03
Turning and feature checks
Machine rotational geometry and verify critical diameters and lengths.
- 04
Secondary work and release
Complete cross features, finishing, final inspection, and packaging.
Related case study
A structured project type, not an invented customer story.
Project-type example
Stainless Steel Precision Shaft
Project-type example awaiting verified inspection records
Review project structureFAQ
CNC Turning questions from engineering and sourcing teams.
What should I provide for a CNC turning quotation?
Send a 3D CAD file when available, a 2D drawing for critical dimensions and tolerances, material, quantity, finish, inspection, and delivery requirements. An engineer reviews the package before quotation.
Can turned parts include milled flats or cross holes?
Yes. Rotational components can be reviewed for secondary milling, drilling, or other features. The setup route depends on feature position, tolerance relationships, and quantity.
What thread information is needed?
Provide the thread standard, nominal size, pitch, internal or external designation, class or fit requirement, depth or length, and any gauge requirement.
How is lead time determined?
Lead time depends on geometry, material availability, quantity, tooling or setup requirements, surface finishing, inspection, and delivery needs. Timing is reviewed with the quotation rather than presented as a fixed promise.
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View serviceStart your RFQ
Upload your drawings and receive an engineer-reviewed quotation.
Share the process, material, quantity, finish, tolerance, and delivery requirements. contact@kewei-kw.com / +86-13929495765