Online CNC Turning Service

Get precision CNC turned parts, ISO 9001 certified, fast and easy with Unionfab’s online service.
Instant quotes in minutes, quicker turnaround times.

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Why Choose Unionfab for Your CNC Turning Projects?

Extensive Capabilities

Leverage our vast network exceeding 400 CNC machines across six facilities. We ensure you access the specific capabilities needed for your project at industry-leading prices and rapid turnaround times.

Effortless CNC Turning, Start to Finish

Simplify your entire CNC turning process. Get instant quotes, on-demand lead times, and expert feedback on your metal and plastic part designs for optimal manufacturability – all within our user-friendly quotation system.

Top-notch Quality at Competitive Prices

Unionfab offers CNC milling services at 50% lower than European and American competitors, without sacrificing quality. Our rigorous processes ensure your high-precision parts meet the strictest standards (ISO 9001:2015, ISO 13485, and AS9100D).

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Unionfab CNC Turning Material Options

MaterialAvailable Varieties

Unionfab CNC Turning Steel

AISI 1018 Steel Unionfab CNC Turning Copper

AISI 1045 Steel
AISI 1066 Steel
AISI 1140 Steel
AISI 4140 Steel
A2 Tool Steel
D2 Tool Steel
P20 Tool Steel
H13 Tool Steel
M2 Tool Steel
YT15 Tungsten Steel
YT20 Tungsten Steel

Unionfab CNC Turning Stainless Steel

AISI 201 Stainless Steel
AISI 303 Stainless Steel
AISI 304 Stainless Steel
AISI 316 Stainless Steel
AISI 316L Stainless Steel
AISI 410 Stainless Steel
AISI 416 Stainless Steel
AISI 420 Stainless Steel
AISI 440C Stainless Steel
17-4 PH Stainless Steel

Unionfab CNC Turning Aluminum

AA2017 Aluminum
AA2024 Aluminum
AA5052 Aluminum
AA5083 Aluminum
AA6061 Aluminum
AA6061-T6 Aluminum
AA6063 Aluminum
AA6082 Aluminum
AA7075 Aluminum
MIC-6 Aluminum

Unionfab CNC Turning Titanium

Grade 2 Titanium
Grade 6 Titanium Alloy (Ti-6Al-4V)

Unionfab CNC Turning Copper

C1100 Copper
C1020 Copper
C1200 Copper
C2800 Copper
C5210 Copper
C1720 Copper

Unionfab CNC Machining Plastics

ABS (Acrylonitrile Butadiene Styrene)
PC (Polycarbonate)
PE (Polyethylene)
POM (Polyoxymethylene)
PMMA (Polymethyl Methacrylate)
PP (Polypropylene)
PU (Polyurethane)
PVC (Polyvinyl Chloride)
PA6/PA66 (Polyamide 6/ Polyamide 66)
PTFE (Polytetrafluoroethylene)
PEEK (Polyetheretherketone)
ESD 225 POM Acetal
MC501CD R6

Unionfab CNC Machining Composites

Synthetic stone (CDM)
Bakelite PF
FR4 Epoxy Fiberglass
ZrO2 Ceramic

Common Finishes for CNC Turned Parts

Vacuum Metalizing

A physical deposition process that utilizes argon gas in a vacuum chamber to bombard a target material, causing its atoms to detach and adhere to a conductive workpiece, forming a uniform, smooth, and metallic-like surface layer. Applicable to a wide range of materials, including metals, plastics, composites, ceramics, and glass. Most commonly used for aluminum, followed by silver and copper.

CNC Turning Applications

cnc turned car parts

Automotive Industry

From engine components to transmission gears, CNC turning ensures smooth operation, longevity, and precise tolerances for a safe and comfortable driving experience.

medical cnc machining

Medical and Dental

CNC turning facilitates the creation of intricate prosthetic and implant components with superior biocompatibility, vital for successful procedures and long-term patient well-being.

industrial cnc

Industrial production

From rapid tooling and saving time on prototyping, to efficiently churning out precise parts in bulk, handling complex features, and working with diverse materials, CNC turning's versatility makes it a manufacturing workhorse.

CNC Turning: Pros and Cons

Quick Turnaround Times

CNC turning allows for rapid production of parts, especially compared to manual machining methods. This is beneficial for prototyping, low-volume production runs, or situations requiring parts quickly.

Unionfab CNC Turning Tolerance Considerations

FeatureStandardAdvanced OptionNotes


±0.005" (±0.127mm)

±0.0005" (±0.0127mm)

Tolerances will be held to +/-.005"(+/-.127mm) in accordance with ISO 2768 unless otherwise specified.

Surface Roughness (Ra)

125uin (3.2μm)

Up to 16uin (0.4μm)

Surface roughness will be held to 125uin/3.2um Ra unless otherwise specified.

Lead Time

7-12 days

Contact us or advanced options.Contact us or advanced options.

Accepted File Formats

3D: STEP, STP, IGS 2D drawings: DWG, DXF, PDF

Contact us for specifics.

Delivery time may be 2-3 days longer if only 2D drawings are provided.


Standard Report (Free)

CMM Inspection or Third Party Inspection (Fee Required)

Free standard report, additional options available.

CNC Turning: Breakdown of the Basics

What is CNC Turning

CNC turning, also known as CNC machining turning or computer numerical control turning, is a subtractive manufacturing process used to create precise parts with rotational symmetry. It utilizes a rotating tool to precisely remove material from a fixed workpiece, much like shaping clay on a potter's wheel.

Ideal for parts with a circular cross-section, it offers high-precision, repetitive production of components in various materials like metals and plastics, often performing multiple operations like facing, turning, and threading for a versatile and automated approach to creating rotationally symmetrical parts.

Overall, CNC turning offers a versatile and efficient way to manufacture precise parts from various materials. Its ability to handle complex geometries and integrate with automation makes it a cornerstone of modern manufacturing.

CNC Turning Machine: CNC Lathe

A CNC lathe is the workhorse, equipped with a rotating spindle that holds the workpiece (material being machined). Cutting tools are mounted on a turret that can move along various axes (typically X and Z) to remove material and create the desired shape.

CNC control unit translates a digital program (usually created with CAM software) into precise movements for the spindle and cutting tool.

what is cnc turning
cnc lathe turning tools

CNC Turning Process

  1. Workpiece Setup: The raw material (bar stock, tube, etc.) is secured in the lathe's chuck or between centers.
  2. Programming: A CNC program defines the toolpath, specifying the movements of the cutting tool along the axes to achieve the desired shape.
  3. Machining: The CNC program executes, controlling the spindle speed, feed rate (how fast the tool moves), and toolpath to remove material from the workpiece.
  4. Part Removal: Once complete, the finished part is removed, and the process can be repeated for the next piece.

Key Points about CNC Turning

  • Rotational focus: It excels at producing parts with a circular cross-section, like shafts, knobs, and gears.
  • Computer-controlled precision: A program dictates the tool's movements, ensuring consistent and accurate results for high-volume production.
  • Variety of materials: It can work with metals, plastics, and even some composites.
  • Multiple operations: Modern CNC lathes can perform various operations like facing, turning, grooving, and threading, reducing the need for additional machining steps.