Custom CNC Turning Services
High-precision CNC turning solutions for prototypes and production parts that demand consistent accuracy, smooth surface finishes, and stable dimensional performance. Our multi-axis turning centers deliver reliable results across metals and engineering plastics, supported by ISO-certified quality processes and fast global turnaround.
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ISO 9001:2015 | AS9100D | ISO 13485 | ITAR Compliant
Yicenprecision Instant Quoting Engine is covered by U.S. Pat. Nos. 11,086,292, 11,347,201, 11,693,388, 11,698,623, 12,099,341, and 12,189,361. Other patents pending.
What Is CNC Turning?
CNC turning is a precision machining process used to create accurate cylindrical and concentric components by removing material from rotating stock. The controlled toolpaths deliver stable diameters, clean surface finishes, and consistent dimensional repeatability for both prototypes and production parts.
How CNC Lathes Operate
A spindle rotates the raw material while cutting tools shape external and internal features such as profiles, bores, grooves, and threads. This method ensures stable geometry and predictable accuracy.
Turning Configurations
Different types of lathes handle different levels of work, from basic turning of round parts to advanced machines that produce very small or complex shapes. Each type helps improve stability, tool control, and accuracy during machining.
Turning Workflow
The machine executes programmed feeds, speeds, and tool motions to achieve precise dimensions.
Maximum CNC Turning Capabilities
Our CNC turning capabilities are engineered for consistent accuracy, smooth finishes, and efficient production cycles across metal and plastic components. Each setup supports reliable machining for both prototypes and large-batch manufacturing.
CNC milling is a subtractive machining technique which involves cutting metal and plastic material in the form of precise and repeatable shapes using 3-axis, 4-axis and 5-axis machines. Best suited to complicated geometries, strict tolerances, and high surface finishes on prototype and production components.
We provide precision CNC machining services for custom parts in metals and engineering plastics. From prototypes to production runs, every component is machined to tight tolerances with consistent, repeatable accuracy.
Our design and manufacture precision jigs and fixtures which improves machining, assembly and inspection processes. Our fixtures are manufactured by high-precision CNC operations to be stable, repeatable and durable in small-batch and high-volume manufacturing settings.
CNC Turned Parts for Precision Components
Discover our expert precision cnc turning services, where accuracy meets performance at every stage. From intricate prototypes to production-ready components, our custom cnc turning services deliver high-accuracy parts. Every cut, every contour, crafted with exceptional quality, consistency, and attention to detail.
Materials for CNC Turning
Engineers and leading manufacturers trust Yicen Precision for fast iterations and durable, high-performance parts. Whether for prototyping or full-scale production, our extensive material selection ensures precision, strength, and reliability for any CNC machining project.
Aluminum
Aluminum 5052
Aluminum 7075 & 7075-T6
Aluminum 6063-T5
Aluminum 7050-T7451
Aluminum MIC-6
Aluminum 6061-T6
Aluminum 2024-T3
Bronze/Brass
Brass C360
Brass 260
C932 M07 Bearing Bronze
Copper
H59
H60
Plastics
ABS
Acetal [Delrin]
Acrylic, G-10 Garolite
Nylon 6/6
PEEK
Polycarbonate
PTFE [Teflon]
Polypropylene
Ultra-High Molecular Weight Polyethylene
Steel
Alloy Steel 4130
Alloy Steel 4140
ASTM A36
Stainless Steel 15-5
Stainless Steel 17-4
Stainless Steel 18-8
Stainless Steel 303
Stainless Steel 304
Stainless Steel 316/316L
Stainless Steel 416
Stainless Steel 420
Steel 1018
Steel A36
Titanium
Titanium Grade 2
Titanium 6Al-4V
Zinc
Zinc Sheet Alloy 500
CNC Turning Tolerances
Our turning centers support a wide range of diameters, lengths, and feature types, ensuring reliable machining for small precision components and larger rotational parts.
| Operation | Max Diameter | Max Length |
|---|---|---|
| Standard Turning | Ø300 mm | 500 mm |
| Live Tooling | Ø250 mm | 400 mm |
| Swiss-Type Turning | Ø32 mm | 150 mm |
Surface Finishing for CNC Turning
Precision-turned parts benefit from specialized surface treatments that enhance strength, durability, and overall performance. These treatments are ideal for optimizing the functionality of shafts, bushings, and cylindrical components.
The quickest and most economical option, leaving visible tool marks and potentially sharp edges or burrs. Surface roughness is approximately 125 µin Ra, and burrs can be removed upon request.
A thick chromium coating that boosts hardness, wear resistance, and durability. Perfect for high-stress parts like shafts and pistons.
A thin, electroplated nickel layer that enhances wear and corrosion resistance. Provides a bright, attractive finish for functional parts.
A chemical treatment that creates a dark, matte black surface on steel parts. Offers mild corrosion resistance and reduces light reflection.
A smooth, glossy finish achieved by mechanical buffing. Ideal for decorative parts requiring enhanced shine and low roughness.
A linear, satin-like texture created using abrasive belts or brushes. It reduces minor imperfections and offers a clean, decorative appearance.
Need a specific finish? Submit an RFQ, and we’ll work with you to find a tailored solution for your project.
Creates a smooth, matte finish by media-blasting, typically with glass beads, offering an improved aesthetic and uniform surface texture.
Key Features of CNC Turning
Our CNC turning capabilities are engineered for consistent accuracy, smooth finishes, and efficient production cycles across metal and plastic components. Each setup supports reliable machining for both prototypes and large-batch manufacturing.
| Heading | Description |
|---|---|
| High Dimensional Accuracy | Stable spindle control and rigid toolpaths maintain tight diameter, roundness, and concentricity requirements. |
| Smooth Surface Finishes | Rotational cutting produces clean surfaces ideal for sealing fits, sliding interfaces, and precision assemblies. |
| Efficient for Cylindrical Geometries | Cost-effective machining for shafts, bushings, pins, connectors, and other rotational components. |
| Fast Setup & Short Lead Times | Turning centers allow quick tool changes and reduced cycle time, supporting rapid prototyping and scaling. |
| Live Tooling Support | Add milled flats, threads, grooves, slots, or cross-holes in a single setup for better accuracy and lower cost. |
| Stable Repeatability for Production | Rigid fixturing and automated toolpath control deliver consistent part geometry across long production runs. |
CNC Turning Design Guidelines
Effective design choices help reduce machining time, improve accuracy, and maintain stable part geometry during turning.
| Parameter | Specification |
|---|---|
| Internal Radii | – Avoid sharp internal corners; CNC tools naturally create radii. – Recommended internal radius: 2.6 × tool diameter. – Deep pockets: tool length should not exceed 10× diameter for stability. |
| Threads & Tapped Holes | – For threads Ø1.5-6 mm: depth = 3× diameter. – For threads Ø6 mm: depth = 4× diameter. – Custom threads and fine-pitch threads available upon request. – For turned parts, laser marking is recommended for identification. |
| Minimum Wall Thickness | – Metals: 0.3-1.0 mm. – Plastics: 1.2-1.5 mm. – Thin walls increase vibration, deflection, and machining marks. |
| Hole Sizes & Depth | – Minimum hole diameter: 0.020″ (0.50 mm) depending on tool availability. – Recommended maximum depth: 4× diameter for reliable chip evacuation. – For precision bores, reaming or boring improves tolerance accuracy (±0.002″ typical). |
| Undercuts | – Supported profiles: square, full radius, dovetail, and custom reliefs. – Specialized tools may increase machining time or cost. |
| Text & Engraving | – CNC milling text: minimum 0.6 mm width and 0.1 mm depth. – For turned parts or finer marking, laser engraving is preferred. |
| Avoid Over-Constraint | – Parts should not require excessive fixturing; design for stable flat surfaces and supported geometries. – Avoid ultra-thin features, unsupported tabs, and unnecessary complexity. |
| DFM Review Available | – Our engineers check your part for manufacturability, tolerance risks, tool access, and stability — ensuring efficient machining and high-quality output. |
Quality Assurance & Inspection Capabilities
Every turned part is inspected using certified metrology workflows to ensure dimensional accuracy, surface integrity, and repeatable performance across all production volumes.
Dimensional Accuracy
CMM inspection for critical datums, diameters, roundness, and concentricity
Bore gauges, micrometers, and height systems for fast in-process checks
Supports tight-tolerance features down to ±0.001 in (±0.025 mm)
GD&T & Tolerance Verification
Surface roughness checks (Ra 3.2 μm standard; Ra 0.8 μm optional)
Runout and concentricity measurement for rotational components
Compliance with turning-specific finishing standards
Surface & Finish Testing
Inspection aligned with ISO 2768-mK and ASME Y14.5
Verification of profile, position, perpendicularity, parallelism, circularity
Ensures geometric stability under real machining conditions
Traceability & Reporting
FAI reports, material certificates (MTRs), and CMM data available
Lot tracking for aerospace, medical, and industrial requirements
Secure record-keeping for full audit trail and quality compliance
Industries We Serve
Yicen Precision is serving a broad spectrum of industries, covering aerospace, automotive, electronics, medical, and more. We specialize in providing high-quality, reliable parts tailored to meet the unique engineering challenges of each industry.
Applications of CNC Turning
CNC turning is ideal for precision rotational components where concentricity, smooth surface finishes, and consistent dimensional control are critical.
Shafts & Axles
For motors, gear assemblies, automation systems, and drive mechanisms where straightness, runout, and load-bearing interfaces matter.
Bushings & Spacers
High-accuracy cylindrical components for reducing friction, maintaining alignment, and supporting rotational motion.
Threaded Connectors & Fittings
Precision internal/external threads for hydraulic, pneumatic, and mechanical systems; supports ISO/ASME thread standards.
Pins, Dowels & Couplers
Used for alignment, load transfer, and joining mechanisms in automotive, aerospace, and machinery assemblies.
Sleeves, Housings & Collars
Turned enclosures and structural rings requiring tight diametrical tolerances and smooth surface profiles.
Hydraulic & Pneumatic Components
Valves, adapters, and pressure-line components requiring concentric sealing surfaces and controlled tolerances.
Custom Rotational Components
Specialized geometries, stepped profiles, and multi-diameter parts for prototypes, tooling, and production assemblies.
Why Choose Yicen Precision to CNC Turning ?
We deliver reliable, production-ready turned parts with consistent accuracy, fast lead times, and engineering support built around real manufacturing requirements.
Micron-Level Precision
Stable, repeatable accuracy down to ±0.001″ for rotational components requiring controlled runout and concentricity.
Advanced Multi-Axis Turning Centers
Live tooling, Swiss-type, and multi-axis equipment allow complex features, reduced setups, and better dimensional consistency.
Support for Manufacturability
Our team reviews geometry, material selection, tolerances, and thread standards to ensure optimal machining and lower cost.
ISO-Certified Quality Systems
ISO-Certified Quality Every part passes through controlled inspection workflows aligned with ISO 9001:2015, AS9100D, and ISO 13485 standards.
Reliable Global Delivery
Secure logistics, protective packaging, and validated workflows ensure parts arrive on time and within specification.
Fast Prototyping & Scalable Production
From rapid prototypes to high-volume production runs, we maintain stable lead times with predictable output.
Yicen Machining Solutions
Whether you’re creating a small batch of custom parts or scaling up for high-volume production, Yicen machining services offer the flexibility you need.
CNC rapid prototype machining is perfect for creating engineering or production prototypes that closely resemble the final product in both appearance and functionality. At Yicen, we offer instant quotes and fast delivery, providing you with precise, high-quality CNC machined prototypes for your needs.
- Lead Time: 1-5 business days
- Capability: 1-100 pcs
- Get 20% off the price
Low volume CNC machining often acts as a bridge between prototyping and mass production for new and emerging production. With Yicen, this process becomes easier, more efficient, and cost-effective, allowing you to scale production quickly while maintaining high-quality standards.
- Lead Time: 5-15 business days
- Capability: 101-10,000 pcs
- Meet tight specifications
CNC production machining is the best solution for producing a thousand parts or more efficiently. Leveraging a diverse selection of materials and automation and multi-axis capabilities, Yicen delivers high-volume production with tight tolerances, superior dimensional accuracy, high reliability and fast turnaround times.
- Lead Time: 2-4 weeks
- Capability: Above 10,001 pcs
- Consistent Quality
Frequently Asked Questions
CNC Turning
What file formats do you accept?
We accept all standard CAD and engineering formats used in CNC machining:
- STEP (.step / .stp)
- IGES (.igs / .iges)
- Parasolid (.x_t / .x_b)
- SolidWorks (.sldprt)
- DXF / DWG for 2D drawings
- PDF for dimensioned technical drawings
Providing a technical drawing with GD&T improves accuracy, especially for parts needing precision CNC turning.
What materials can be turned?
We machine a wide range of metals and engineering plastics commonly used in precision CNC turning. Metals include aluminum (6061, 7075), stainless steel (304, 316, 17-4), carbon steels, brass, copper, titanium, and high-temperature alloys such as Inconel. Plastics such as POM, Nylon, PEEK, PTFE, PVC, and ABS are also supported for custom CNC turned parts. Material selection is validated based on machinability, dimensional stability, and final application requirements.
What tolerances can you achieve?
Typical CNC turning tolerances are ±0.005″, while tight-tolerance CNC turning services can achieve ±0.001″ or better on critical diameters, shoulders, and mating surfaces. Roundness can be controlled to ≤ 0.002″, with concentricity typically held within ≤ 0.005″ depending on geometry and tool access. All tolerance requirements are confirmed during DFM review to ensure the design is manufacturable.
Do you offer live tooling?
Yes. Our CNC turning services include live tooling and multi-axis turning, enabling milling, drilling, slotting, and threading operations within a single setup. This improves concentricity, reduces tool changes, minimizes fixture requirements, and shortens lead time — especially for complex turned-milled components.
What surface finishes do you offer?
We provide a full range of finishing options for metal and plastic turned parts:
- As-turned
- Bead blasting
- Powder coating
- Anodizing (Type II / Type III)
- Polishing / Electropolishing
- Black oxide
- Zinc & nickel plating
Finishes are selected based on durability, corrosion resistance, friction behavior, or cosmetic needs. Surface roughness can reach Ra 0.8 μm for high-precision turning applications.
Transform Concepts into Precision Parts
We specialize in converting your ideas into high-quality, functional components with unparalleled speed and accuracy. With advanced technology and expert craftsmanship, we create parts that meet the most complex specifications.
- End-to-End Precision Engineering
- Streamlined Production Workflows
- Commitment to Machining Excellence
- Reliable, On-Time Delivery
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