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Machining Services
Tolerances
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Materials
Surface finishes
Workshop
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

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 FortuneZest 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.

We have high standards for CNC 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

Gallery of CNC Turning parts

Below are a small selection of the CNC machined parts and end-use components we produce for our customers.

Turned parts + threads
Turned parts + threads

Circular connectors can be processed more accurately and quickly through turning and milling, making the parts more precise.
Turning threaded parts
Turning threaded parts

Circular connectors can be processed more accurately and quickly through turning and milling, making the parts more precise.
Turned parts set
Turned parts set

Circular connectors can be processed more accurately and quickly through turning and milling, making the parts more precise.
Turned Parts Aluminum and Stainless Steel
Turned Parts Aluminum and Stainless Steel

Select aluminum or stainless steel based on the part's application to meet the requirements of your specific usage scenario.Project NameMedical partsMaterialStainless steel + AluminumProcessing EquipmentTurn-milling compound, CNC latheTechnologyCNC turning, CNC millingTesting InstrumentsCMMSurface TreatmentClearPost-surface Inspection EquipmentCMMApplication AreasIndustrial machinery
Telephoto lens housing parts
Telephoto lens housing parts

Aluminum alloy is an alloy material composed of elements such as aluminum, copper, magnesium, and zinc. Due to its characteristics of lightness, corrosion resistance, oxidation resistance, and high strength, it has been widely used in the manufacture of DSLR camera lens housings.
50mm lens housing parts
50mm lens housing parts

Aluminum alloy is an alloy material composed of elements such as aluminum, copper, magnesium, and zinc. Due to its characteristics of lightness, corrosion resistance, oxidation resistance, and high strength, it has been widely used in the manufacture of DSLR camera lens housings.
Zoom lens housing parts
Zoom lens housing parts

Aluminum alloy is an alloy material composed of elements such as aluminum, copper, magnesium, and zinc. Due to its characteristics of lightness, corrosion resistance, oxidation resistance, and high strength, it has been widely used in the manufacture of DSLR camera lens housings.
Camera lens housing parts
Camera lens housing parts

Aluminum alloy is an alloy material composed of elements such as aluminum, copper, magnesium, and zinc. Due to its characteristics of lightness, corrosion resistance, oxidation resistance, and high strength, it has been widely used in the manufacture of DSLR camera lens housings.
Lens zoom ring internal parts
Lens zoom ring internal parts

Aluminum alloy is an alloy material composed of elements such as aluminum, copper, magnesium, and zinc. Due to its characteristics of lightness, corrosion resistance, oxidation resistance, and high strength, it has been widely used in the manufacture of DSLR camera lens housings.

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 turning 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.

Name

Applicable Materials

Colors

Can be applied to
As machined

As machined

Aluminum, Steel, Stainless Steel

Ra 0.8μm - Ra 3.2μm

All post processes
Anodizing

Anodizing

Aluminum

Clear, black, grey, red, blue,green,orange,gold

Media Blasting, Tumbling, Alodine*
Chrome Plating

Chrome Plating

Acrylic

n/a

Enhanced Cosmetic Appearance
Electroless Nickel Plating

Electroless Nickel Plating

Aluminum, Steel, Stainless Steel

n/a

Media Blasting, Tumbling
Black Oxide

Black Oxide

Aluminum

Black

Bead blasted, Tumbling, Chem film*
Bead Blasted + Anodized type II

Bead Blasted + Anodized type II

Aluminum

Clear, Black, Red, Blue, Orange, Gold

Media Blasting, Tumbling, Type II Anodizing* Type III Anodizing with PTFE*
Zinc Plating

Zinc Plating

Steel, Stainless Steel

Clear (light blue coating). Black (glossy black coating).

Media Blasting, Tumbling, Passivation
Tumbling

Tumbling

Aluminum, Steel, Stainless Steel, Brass, Bronze, Copper

n/a

All post processes, except Electropolish and Powder Coat
Nano coating

Nano coating

For applicable material processing, please refer to the catalog.

Full Coating or RAL color catalog

Please contact us for detailed instructions
Passivation

Passivation

Steel, Stainless Steel

n/a

Black Oxide, Electroless Nickel Plating, Zinc Plating, Tumbling, Media Blasting
Brushed

Brushed

Aluminum, Steel, Stainless Steel, Brass, Bronze, Copper

Small：Draw 6.5-8mm wire to 2.0-4.0mm. Medium：Draw 16-18mm wire to 8.0-12.0mm. Large：Draw 100-120mm wire to 20-30mm.

All post processes, except Electropolish and Powder Coat
Electropolishing

Electropolishing

Steel, Stainless Steel

n/a

Passivation, Tumbling
*Additional finishing options include chromic acid anodizing, cadmium plating, copper plating, titanium anodizing (blue anodizing), gold plating, silver plating, and more. For materials not listed here, please contact us directly.

Production Workshop

Our team possesses extensive knowledge and experience in the field, ensuring precision and quality in every project we undertake.

Comprehensive workshop
Comprehensive workshop

In-House Facilities: Accelerating Project Completion with Efficiency and Affordability
3D printing room
3D printing room

Quickly create prototype first board with 3D printer
Surface finishing workshop
Surface finishing workshop

We can provide high-precision metal surface treatment technology solutions and services for machined parts
CMM workshop
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
Quality Inspection Department
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.
Assembly workshop
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.
Grinding machine center
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.
Quotation Engineering Team
Quotation Engineering Team

The Quotation Engineering Team analyzes customer inquiry drawings and provides quotations, and performs CNC programming for official order drawings.

What is FortuneZest

FortuneZest is a leading CNC parts processing factory, which has been serving the high-end manufacturing industry for over 25 years. We are committed to providing precise, efficient, and customized precision parts solutions for high-end manufacturing.

Learn more

FAQs

  • Do I need a technical drawing for CNC machining?

    While technical drawings aren't used for obtaining g-code, they are vital for quality control. Technical drawings are also essential when your part contains threads, tolerances and/or finishes on specific surfaces.

  • What does a technical drawing have to include?

    A standard technical drawing has to include essential information like a title bar, views of the parts—including the orthogonal view, cross-sectional view and isometric view—coordinate details, all requirements and any additional annotations. Most importantly, make sure the title block does not contradict the information in the CAD file you've uploaded to the quote builder.

  • Do technical drawings need notes to the manufacturer?

    Notes to the manufacturer are not technically mandatory, but adding them to your technical drawing can be crucial for conveying information that wouldn’t fit in the blueprints themselves.

  • How to provide technical drawings to the manufacturer?

    You can easily upload a PDF of your technical drawing in the Part Specifications section of the upload attachment via the "Upload Attachment" form on our Contact Us form. Or email us directly.
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