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Mastering Aluminum CNC Turning: Techniques and Best Practices

Aluminum is a popular material for CNC turning due to its lightweight, excellent machinability, and robust applications in various industries. In this blog post, we will delve into the world of aluminum CNC turning, exploring techniques, best practices, and how to optimize your projects for success. Buckle up as we take you on a journey towards mastering aluminum CNC turning!

Aluminum: The Ideal Metal for CNC Turning

Before we dive into the techniques, it is essential to understand why aluminum is a top choice for CNC turning. Alloys such as the 6061, 7075, and 2024 series have impressive mechanical, electrical, and thermal properties that make them ideal for a wide range of applications. From aerospace parts to electronics housings and even intricate automotive components, aluminum is the go-to material for many CNC machinists.

Choosing the Right Aluminum Alloy

Picking the right aluminum alloy for your CNC turning project is crucial. Each alloy has specific properties that make it suitable for particular applications. For instance, 6061 aluminum has good weldability and excellent corrosion resistance, while 7075 offers high strength and fatigue resistance. Understanding your project requirements will ensure that you use the most suitable aluminum alloy for your turning needs.

Tools and Equipment for Aluminum CNC Turning

High-quality tools and equipment are instrumental in achieving precise and accurate aluminum CNC turning. Some recommended tools for working with aluminum include:

1. Carbide cutting tools: Carbide cutting tools provide excellent performance when machining aluminum. They offer high cutting speeds and can handle the material's softness and gummy nature.

2. Chipbreaker inserts: Aluminum is notorious for producing long stringy chips on the cutting tool. Chipbreaker inserts help break the chips into smaller pieces, preventing them from wrapping around the tool and potentially causing damage.

3. High-speed spindles: Aluminum's low melting point and softness make it crucial to have adequate spindle speeds when cutting and shaping the material.

Best Practices for Aluminum CNC Turning

Here are some best practices to consider when turning aluminum on a CNC machine:

1. Optimize cutting parameters: The cutting parameters, such as cutting speed, feed rate, and depth of cut, play a pivotal role in the success of your aluminum turning project. To achieve optimal results, make sure to establish the proper cutting parameters for the specific alloy and application.

2. Use coolant and lubrication: Both coolant and lubrication are essential to minimize heat build-up and prevent aluminum chips from galling or sticking to the cutting tools. Select the most suitable coolant and lubrication for your project based on the specific aluminum alloy and cutting conditions.

3. Monitor tool wear: Aluminum is soft and malleable, but its properties can still wear down cutting tools. Regularly inspect and monitor tool wear and replace the tooling as needed to maintain an efficient and reliable machining process.

4. Minimize vibration: Vibrations can cause poor surface finishes and reduce the precision of your aluminum CNC turning. To minimize vibrations, use proper fixturing, utilize dampening tools, and keep your CNC machine in good condition.

5. Deburring and finishing: Finishing touches such as deburring the edges and polishing the final product can transform your aluminum CNC turned part from a simple prototype into a sleek, end-use part.

Examples of Successful Aluminum CNC Turning Projects

To illustrate the different styles and applications of aluminum CNC turning, let's take a look at some successful projects:

1. Aerospace components: The aerospace industry relies heavily on lightweight materials such as aluminum. Intricate parts like engine housing, brackets, and gears are often produced with CNC turning.

2. Automotive components: Aluminum CNC turning delivers parts with tight tolerances and excellent surface finishes for the automotive industry. Examples include steering gears, brake components, and suspension parts.

3. Electronic enclosures: Aluminum is widely used in producing electronic enclosures to protect delicate circuits and components. With CNC turning, precise and custom-shaped enclosures can be manufactured to fit various applications.

4. Custom-made bolts, nuts, and fittings: CNC turning allows for the production of high-precision, custom-designed bolts, nuts, and other fittings for various applications. Aluminum, with its lightweight and corrosion-resistant properties, is a popular choice for producing these components.

By now, you should have gained a solid understanding of aluminum CNC turning, its techniques, best practices, and various applications. Using this knowledge, you can approach your next aluminum CNC turning project with confidence and expertise. Good luck, and happy machining!

aluminum cnc turning

What is CNC Turning

CNC turning is a process that involves using computer numerical control (CNC) machines to shape and finish various materials, such as metals and plastics, into desired shapes and sizes.
This process is typically used in the manufacturing industry to produce precision parts and components for a wide range of applications, including automotive, automation, aerospace, medical, machinery, and industrial.

CNC Turning service

Asianstar Professional CNC Turning Service

Asianstar CNC turning Service offers precision machining for a wide range of materials, including metals, plastics, and composites. With high level facilities and skillful operators, we can produce high-quality parts with tight tolerances and intricate designs.

Our CNC turning capabilities allow us to produce parts with diameters ranging from 0.5 mm to 480mm and lengths up to 450mm. We offer both single and multi-axis turning, as well as live tooling options for added complexity and accuracy.

We use proven processes and quality control measures to ensure that every part we produce meets our clients' specifications and expectations.

Whether you need a single prototype or high-volume production runs, our CNC turning service can provide the precision and reliability you need to get your project completed on time and on budget.

CNC Turning service

Components Sizes of Asianstar CNC Turning Service

Unit (mm) Min Max
Out Diameter 0.5 480
Inner Diameter (Hole) 0.3 465
Length 1.0 450
Groove Diameter 0.4 above
Thread M1.2 above

Components Tolerance of Asianstar CNC Turning Service

Unit (mm) Tolerance according to sizes
Height Tolerance Diameter Size 0.5 to 3 3 to 6 6 to 30 30 to 120 120 to300 300 to480
Tolerance ±0.003 ±0.010 ±0.020 ±0.030 ±0.035 ±0.040
Length Tolerance Length Size 0.5 to 3 3 to 6 6 to 10 10 to 20 20 to 30 30 above
Tolerance ±0.010 ±0.020 ±0.250 ±0.250 ±0.030 ±0.035

Components shape and position tolerance of Asianstar CNC Turning Service

Tolerance Class followed Tolerance (mm)
Straightness and Flatness Verticality Symmetry
10 10 to 30 30 to 100 100 to 300 300 to 1000 1000 to 3000 to 100 100 to 300 300 to 1000 1000 to 3000 to 100 100 to 300 300 to 1000 1000 to 3000
H ±0.015 ±0.02 ±0.03 ±0.05 ±0.10 ±0.15 ±0.02 ±0.025 ±0.03 ±0.035 ±0.02 ±0.03 ±0.04 ±0.05

Capability of Asianstar CNC Turning Service

Type of Turning Machine Diameter Size (mm) Length Size (mm) Productivity (PCS/Month)
Auto Turning Machine Simple Turning Machine Multi Turning Machine Pin Turning Machine Min 0.5 Max 480 Min 1.0 Max 450 200’000/Item


Multiple Machining Processes

Multiple Machining Processes

Asianstar has various machining processes to support different types of components from client, we can choose the best suitable manufacturing solution to carry result in perfect performance and cheap cost

Flexible Custom Service

Flexible Custom Service

With skillful machining technologies, Asianstar is flexible to support clients on different materials and different structures of the components, we also flexible on the components quantities and even assembly

Create Designing for Clients

Create Designing for Clients

Not only producing according to clients drawings, Asianstar also propose the better designing to clients, supporting clients to buildup improved designing or even new generation components

Standard Procedures

Standard Procedures

Asianstar production, as experienced by many years, is strictly following internal Standard Operating Procedures, to make sure the production schedule is smooth and plans are well carried out well without accidents

Standard Procedures

Standard Procedures

Asianstar strictly controlling product quality by system. We start QC controlling from production plan once setting up, to production process by monitoring QC checking and until the final Inspection before packing

Fast Lead-Time Delivery

Fast Lead-Time Delivery

Asianstar strictly control the production processes, teams keep the plan moving ahead according to the procedures, we have internal time management schedule which mostly bring earlier lead-time of delivery

Asianstar: Professional CNC Machining Supplier

From year of 2005, Asianstar Company establish the CNC Machining Factory in Guangdong Province, China.
We mostly provide CNC Turning, Milling, Drilling, Grinding, and Multi Machining processes service on various materials.
With the Belief of becoming a key supplier in the supply-chain of Precision Components, we strictly control our product quality, keep high precision on our components production, buildup the whole-process QC System and submit the satisfaction for every order.
By long term development, we have buildup partnership with world-wide clients, supporting our partners in Designing, Optimizing, Producing and Testing on each type of components.


CNC Turning Service

CNC Turning Service

Our CNC Turning Service provides different sizes of roll shape work-pieces, the diameter range is from 0.5mm to 480mm, reaching tolerance +/-0.003mm.

CNC Milling Service

CNC Milling Service

Our milling machines and CNC centers are able to produce complicated structure part, five-axis devices produce multi-sides at one-time jag which bring high precision result

Sheet Metal Fabrication

Sheet Metal Fabrication

Our Sheet Metal Fabrication provides slicing, punching, bending, welding, painting and assembling for set products, unique tooling for each project to raise production efficiency

Aluminum Extrusion

Aluminum Extrusion

Our Aluminum Extrusion brings clients various shapes of aluminum parts, high efficiency for mass quantity, our precision extrusion mold control tolerance within 0.01mm

Forging Service

Forging Service

For some steel serious products, we apply Forging Service to make out their outer shape and them use CNC devices to start drilling, forming, rolling, cutting, etc.

Finishing Service

Finishing Service

Our Surface Finishing Service uses chemical or electro post-treatments after machining tasks are finished, normally includes Oxide, Anodizing, Passivation, E-Plating, Painting,etc.


  • Q1.Do you support ODM/OEM?

    Yes, we support ODM/OEM, we provide custom-made service for clients or even support clients on designing or improving

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