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The Ultimate Guide to CNC Turning Tool Holders

As technology continues to evolve in the world of manufacturing, having a deep understanding of CNC turning tool holders is essential for any machining professional. These essential components play a vital role in the overall performance, efficiency, and precision of a CNC machine. In this blog post, we aim to provide you with a comprehensive guide to CNC turning tool holders, their functions, types, and how to effectively choose the right holder for your machine.

What are CNC Turning Tool Holders?

CNC (Computer Numerical Control) turning tool holders are the crucial components used to support and secure cutting tools in CNC lathes while machining workpieces. They have a significant impact on the quality of the final product and the efficiency of the overall process.

Turning tool holders offer rigidity, precision, and effective heat dissipation, which are essential factors for achieving the best results. They come in various shapes, sizes, and configurations to accommodate different cutting tools and machine specifications, ensuring optimal performance during the machining process.

Types of CNC Turning Tool Holders

There are several types of CNC turning tool holders, each designed to hold specific cutting tool shapes and sizes. It's crucial to match the right tool holder type with the appropriate cutting tool and machining process. Here is an overview of some popular types of CNC turning tool holders:

1. Tool Post\

The tool post is a basic yet crucial component of a CNC lathe that holds other tool holders in place. It includes the turret and tailstock, allowing the machinist to switch between multiple cutting tools during the machining process.

2. Tool Block\

Tool blocks are used to hold turning tools, boring bars, and other cutting tools firmly in place on the turret or tailstock. They ensure the cutting tool remains rigid while machining, thus contributing to better finish quality and longer tool life.

3. Quick-Change Tool Holder\

Quick-change tool holders are designed for swift and efficient tool changeovers, significantly reducing setup and changeover time. They come in various sizes and configurations, such as wedge-lock, VDI, BMT, and others, to accommodate different machine specifications.

4. Angle Head Holder\

This specialized tool holder type has an angled head design, allowing it to reach difficult-to-access areas on the workpiece. Angle head holders are suitable for internal turning, facing, grooving, and other operations that require a specific angle.

5. End Mill Holder\

End mill holders are designed to hold end mills and drill bits securely during CNC turning operations. They come in various sizes to accommodate different cutting tools and ensure a high level of rigidity and stability during machining.

How to Choose the Right CNC Turning Tool Holder?

Selecting the appropriate tool holder for your CNC lathe is critical if you want to achieve the best results and efficiency. To do this, a skilled machinist should consider the following factors:

1. Compatibility: Before picking a tool holder, it's crucial to ensure that it is compatible with your CNC lathe turret and tooling. You should also check whether it meets the specifications of your machine and cutting tools.

2. Tool Type: Each tool holder is designed to accommodate a particular type of cutting tool or a group of tools. Ensure that the tool holder you select aligns with the cutting tools and machining operations you plan on performing.

3. Rigidity: A rigid tool holder is essential for maintaining stability and precision during the machining process. Always opt for high-quality tool holders that offer excellent rigidity to avoid unwanted vibrations and improve surface finish.

4. Ease of Use: A tool holder with a user-friendly design can significantly enhance productivity and efficiency. Quick-change tool holders are particularly popular, as they minimize changeover time and are easy to install and remove.

5. Cost: When selecting a turning tool holder, you should balance between quality and cost. High-quality tool holders may have a higher upfront cost, but they can also provide better performance, longer tool life, and eventually reduce the overall cost of the machining process.

Tips for Maintaining CNC Turning Tool Holders

Proper maintenance of your turning tool holders is essential for their optimal performance and longevity. Here are some tips for maintaining your tool holders:

1. Cleanliness: Regularly clean your tool holders to remove any dirt, coolant, or debris that might affect their performance or damage your tools.

2. Lubrication: Keep moving parts of the tool holder lubricated to avoid wear and corrosion. Check the manufacturer's guidelines for appropriate lubrication requirements.

3. Inspection: Periodically inspect your tool holders for any signs of damage, wear, or misalignment. This can help you identify and address problems before they cause significant issues in your machining process.

4. Storage: Store your unused tool holders in a dry, clean environment to prevent rust and contamination.

5. Balancing: If necessary, have your tool holders professionally balanced to ensure optimal performance and minimize vibrations during machining.

By adhering to these guidelines and choosing the right CNC turning tool holder for your application, you'll be well equipped to achieve the highest level of performance and efficiency in your CNC machining processes. Remember, investing in high-quality tool holders is a decision that will ultimately contribute to the success of your operation.

cnc turning tool holder

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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