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What is CNC turning?

What is CNC turning?

CNC turning produces parts by mounting a blank on a rotating chuck and removing material using stationary cutting tools. This technology is ideal for manufacturing parts with symmetry along their center axis. Turned parts are typically produced faster (and at a lower cost) than milled parts.
Learn more about CNC milling and turning

Maximum part size for CNC turning


Part size limitations

Metric units

Imperial units

Maximum part diameter431 mm17 in
Maximum part length990 mm39 in
Maximum swing over the carriage350 mm13.7 in
Maximum spindle through-hole40 mm1.5 in
Maximum speed: 1700RPM, Motor power: 640W

Precision CNC Turned Parts & Assemblies

View our portfolio of high-volume CNC turned parts, including shafts, pins, connectors, and fully assembled sub-components. These examples demonstrate our expertise in Swiss machining and multi-axis turning for exceptional concentricity and finish.

High-precision CNC machined lens mount ring in aircraft-grade 7075-T6 aluminum
Aluminum (Al 7075-T6) SLR lens
Purpose Telephoto lens housing parts
Process CNC Turn-milling
Material Aluminum 7075-T6
Surface finish Clear
Unit price €45-788
Industry Consumer Electronics
CNC Turned Threaded Parts - Aluminum Brass Stainless Steel
Threaded Turned Components
CNC Turned Threaded Brass and Stainless Steel Parts
Brass & Steel Threaded Parts
CNC Turned Parts Kit - Aluminum Brass Stainless Steel
Multi-Material Turned Set
CNC Turned Aluminum and Stainless Steel Parts
CNC Stainless Steel Parts
CNC Machined Al 4043 Alloy Cine Lens Base
Heat-Dissipating Al-Si Alloy (Al 4043) Cine Lens Base
CNC Machined Al 7003 Alloy Stabilization Frame
Al 7003 DSLR lens Alloy Frame
CNC Machined Thin-Wall Al 5052 Lens Barrel
Al 5052 Lens Barrel
Purpose Al 5052 Lens Barrel
Process CNC machining
Material Aluminum 5052
Surface finish Anodizing clear
Unit price €56.98
Industry Consumer Electronics
CNC Machined Monolithic Al 2024 Zoom Track
Al 2024 Zoom Track

Available materials for CNC Turning

Metals

Metals

A wide range of metals for CNC machining, with applications in multiple industries. Ideal for both one-off prototypes and end-use custom parts.
Browse CNC milling metal materials
Plastics

Plastics

A wide range of plastics for CNC machining, with applications in multiple industries. Ideal for both one-off prototypes and end-use custom parts.
Browse CNC milling plastic materials
CNC milling surface finishes

CNC milling surface finishes

Improve your part’s performance by selecting high-quality surface finishes that enhance the roughness, hardness, chemical resistance and cosmetic features of your finished component.
Browse CNC milling surface finishes

CNC turning tolerances

We follow ISO 2768 standards for CNC machining.


Limits for nominal size

Plastics (ISO 2768- m)

Metals (ISO 2768- f)
0.5mm* to 3mm ±0.1mm ±0.05mm
Over 3mm to 6mm ±0.1mm ±0.05mm
Over 6mm to 30mm ±0.2mm ±0.1mm
Over 30mm to 120mm ±0.3mm ±0.15mm
Over 120mm to 400mm ±0.5mm ±0.2mm
Over 400mm to 1000mm ±0.8mm ±0.3mm
Over 1000mm to 2000mm ±1.2mm ±0.5mm
Over 2000mm to 4000mm ±2mm
*Please clearly indicate tolerances for nominal sizes below 0.5mm on your technical drawing.

We have high standards for CNC turning

We manufacture your custom parts according to strict manufacturing standards and ensure all parts and processes adhere to The Sunnyhowe Standard.

  • Several surface finishes are available to improve the cosmetic quality of your parts after machining.

  • Every custom part gets checked on site by our manufacturing partners according to our guidelines.

  • Inspection reports and other types of quality documentation are available on request to assure the highest quality and compliance.

Browse CNC turning surface finishes

High-Volume CNC Turning Workshop & Expertise

As a dedicated CNC turned parts manufacturer, our turning cell is optimized for precision and efficiency. We produce millions of reliable cylindrical components annually for the automotive, aerospace, and medical industries.

5-axis cnc milling machine
Integrated CNC Machining Workshop
Our in-house facilities allow us to quickly complete your project. As we have multiple CNC turning, milling and die casting equipment. Low prices and fast delivery times.
Precision Wire EDM Machining Services | 4x Sodick VL400Q
Precision Wire EDM Machining
Our Wire EDM workshop features four advanced Sodick VL400Q machines, delivering ±0.002mm precision, superior surface finishes (Ra < 0.2µm), and capabilities for complex geometries in all conductive materials. Get a quote for your precision parts.
Industrial-Grade 3D Printing Facility
3D printing room
The application of industrial 3D printers in CNC (Computer Numerical Control) technology represents a significant shift in the manufacturing industry.
High-Precision CMM Measurement Lab
CMM workshop
The CMM three-coordinate measuring machine (also known as the three-dimensional coordinate measuring machine) plays a pivotal role in CNC processing, 4 units in total, accuracy 0.003mm, with the following main functions
Metal Surface Finishing Workshop
Surface finishing workshop
We can provide high-precision metal surface treatment technology solutions and services for machined parts
CNC Part Quality Inspection with CMM
Quality Inspection Department
Our in-house facilities allow us to quickly complete your project. As we have multiple CNC turning, milling and die casting equipment. Low prices and fast delivery times.
Final Assembly and Integration Process
Assembly workshop
Our in-house facilities allow us to quickly complete your project. As we have multiple CNC turning, milling and die casting equipment. Low prices and fast delivery times.
Precision Grinding Services
Grinding machine center
The grinding machine center has 6 small grinders and 3 flat and large grinders. The equipment is produced in Taiwan and has higher precision.
Certification system
iso13485 iso9001
We’re trusted by
apple dji xiaomi byd royole

Why Choose

Sunnyhowe is an ISO 9001:2015 and AS9100-certified manufacturer headquartered in Shenzhen, China, with over 25 years of expertise in high-precision CNC machining and industrial 3D printing services.

Learn more

FAQ's about CNC turning service

  • What is Swiss-type CNC turning and when is it used?

    Swiss turning uses a guide bushing to support the material very close to the cutting tool, drastically reducing deflection. This is ideal for long, slender, and small-diameter parts (like surgical screws or connector pins) that require extreme precision and complex secondary operations all in one setup.

  • Can you machine aluminum CNC turning parts with anodizing?

    Yes, we frequently produce aluminum turned parts and offer anodizing as a very common secondary service. We can machine parts to account for the dimensional change from the anodizing coating to ensure final tolerances are met.

  • What is your typical turnaround time for a high-volume CNC turning order?

    For high-volume production runs, typical lead times range from 2-4 weeks after final approval of samples. This includes time for material procurement, production, quality inspection, and surface finishing. Rapid turnaround options are available.

  • Why choose you as a CNC turned parts manufacturer?

    As a manufacturer, not just a machine shop, we control the entire process from raw material to finished goods. We have deep expertise in high-volume CNC turning optimization, dedicated quality inspection for statistical process control, and reliable supply chain partnerships to ensure consistent delivery.

  • How do you ensure concentricity and runout on precision shafts?

    We ensure precision by using high-quality collets and live tooling, performing in-process checks with micrometers and dial indicators, and final inspection with CMMs to verify that concentricity, cylindricity, and total runout are within your specified tolerances.
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