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Mastering CNC Turning of Aluminum 7075: Tips, Tricks, and Best Practices

Aluminum 7075 is an ideal material for CNC turning due to its incredible strength, lightweight nature, and versatile applications. As a popular choice among manufacturers and engineers, it's crucial to understand how to effectively work with this versatile metal to achieve the desired results. In this blog post, we will discuss various tips, tricks, and best practices for maximizing the efficiency and precision of CNC turning aluminum 7075 projects.

Introduction: Properties of Aluminum 7075

Before diving into the intricacies of CNC turning aluminum 7075, it's essential to understand the unique characteristics of this metal:

Excellent strength-to-weight ratio: Aluminum 7075 is an exceptionally strong material, making it an ideal choice for a wide range of applications, including aerospace, automotive, and military equipment.

Corrosion resistance: The metal's natural oxide layer provides a high degree of resistance against corrosive elements, making it suitable for various outdoor applications.

Good machinability: Aluminum 7075 can be readily machined using conventional methods, including milling, drilling, and turning.

Tool Selection and Setup

Selecting the right tools and setting them up properly are crucial steps to ensure flawless CNC turning.

Tool Material

Choose cutting tools made from materials that can withstand both the abrasive nature of aluminum 7075 and the high cutting speeds required. Here are some popular materials to consider:

Carbide: Offers excellent wear resistance and is suitable for high-speed machining. It is the most popular choice for cutting aluminum 7075.

Polycrystalline Diamond (PCD): Combines extreme hardness, wear resistance, and a low friction coefficient, making it a suitable choice for high-speed and heavy-duty machining.

Tool Geometry and Coating

To achieve the best results, adapt these guidelines when selecting the tool geometry and coating:

Positive rake angle: This will ensure smooth chip removal, reduced cutting forces, and decreased tool wear.

Large clearance angle: A larger clearance angle will reduce the risk of rubbing and prevent work hardening.

Sharp cutting edges: Sharp cutting edges reduce cutting resistance and prolong tool life.

Use of special coatings: A low-friction or anti-wear coating such as TiAlN, AlCrN, or AlTiN can significantly increase tool life.

CNC Turning Parameters and Techniques

Optimizing the process parameters and employing efficient turning techniques are also essential for effective aluminum 7075 machining.

Cutting Speed

As a general rule, use higher cutting speeds when turning aluminum 7075. This helps minimize tool wear and ensures a better surface finish. However, optimal cutting speeds may vary depending on factors such as tool material, part geometry, and machine capabilities.

Feed Rate

Maintain a consistent and appropriate feed rate to ensure smooth chip evacuation and avoid work hardening or damage to the workpiece.

Depth of Cut

Opt for shallow cuts and a higher number of passes to ensure precise and consistent results.

Coolant and Lubrication

Aluminum 7075 tends to stick to the cutting tool due to its high ductility. Proper coolant and lubrication can prevent adhesion, reduce cutting forces, and extend tool life. Use a mist coolant or a flood coolant to optimize the turning process.

Strategies for Avoiding Common Issues

Here are some helpful tips for avoiding common issues associated with CNC turning aluminum 7075:

Pursue a Dynamic Machining Approach: Use smooth tool paths and minimize sudden changes in cutting directions to avoid chattering or resonant vibrations in the workpiece.

Optimize Workpiece Clamping: Use steady rests and clamping solutions that provide even pressure and consistent support to hold the workpiece securely. This will prevent part deflection and ensure better results.

Create Clearances for Appropriate Chip Evacuation: Adequate chip clearance is vital for effective aluminum 7075 machining. Providing appropriate chip clearance can prevent chip buildup and tool breakage.

Advanced Techniques for Improved Results

For further improved results and productivity, consider implementing these advanced CNC turning techniques:

High-Speed Machining (HSM): HSM can significantly increase material removal rates, productivity, and surface finish quality. However, it requires advanced CNC machines that can handle the high spindle speeds and rapid feed rates.

Dynamic milling: Employing dynamic milling techniques can help reduce cutting forces and ensure faster material removal.

Minimal Quantity Lubrication (MQL): MQL can provide efficient cooling and lubrication, while reducing the environmental impact and cleanup requirements.

By following these guidelines and practices, you can effectively optimize the CNC turning processes of aluminum 7075 and achieve the desired results for your project. Always remember that each machining project is unique, and it's essential to adapt your approach based on the specific requirements of your application.

cnc turning aluminum 7075

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.


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

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