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Mastering the Art of CNC Ball Turning: A Comprehensive Video Guide

Ball turning is an intricate process that involves shaping a metal workpiece into a perfect sphere using computer numerical control (CNC) technology. This process requires precision, expertise, and a deep understanding of machining techniques. In this blog post, we will dive into the world of CNC ball turning and provide you with a comprehensive video guide to help you master this skill.

The Basics of CNC Ball Turning

Before we get into the nitty-gritty of CNC ball turning, it's crucial to understand its fundamentals. Ball turning involves shaping a metal workpiece into a perfect sphere using a specialized cutting tool, known as a ball-turning tool. This tool is mounted on a lathe, which rotates the workpiece while the tool cuts and shapes the material.

CNC technology takes the traditional process of ball turning to a new level by automating it and providing increased precision and repeatability. This is achieved through G-code programming, which instructs the CNC lathe to perform specific cuts and movements to create the desired shape with utmost accuracy.

Choosing the Right Equipment and Tools

To get started with CNC ball turning, you'll need a suitable CNC lathe capable of handling the specific requirements of your workpiece. Some factors to consider when selecting a CNC lathe include size, power, precision, and the ability to accommodate various attachments and tooling.

In addition to a CNC lathe, you'll need a high-quality ball-turning tool. These tools come in various shapes and sizes, and your choice will depend on your desired end product. The cutting edges of these tools can vary from straight to curved, and they can be crafted from different materials, such as carbide or high-speed steel.

To further enhance the precision and quality of your cuts, you may also choose to invest in specialized tooling, such as live tooling attachments, which can perform additional operations while the workpiece remains on the lathe.

Preparing Your Workpiece

Before you begin the CNC ball turning process, it's crucial to prepare your workpiece adequately. This means securely mounting it on the lathe and ensuring it is free from any flaws or defects that could cause issues during machining.

To start, clean and inspect your workpiece for any visible signs of damage, such as cracks, chips, or dings. Next, use appropriate tools to deburr any sharp edges and ensure the surface is smooth and free of any irregularities.

Once your workpiece is clean and ready for machining, mount it securely on the lathe using a suitable workholding device, such as a three-jaw chuck or collet. Proper workpiece mounting is crucial to achieving a precise and even finish on your final product.

Programming and Operating the CNC Lathe

With your workpiece mounted and ready to go, it's time to program the CNC lathe. Begin by creating the G-code program for your desired finish, taking into account factors such as the size and shape of the sphere, the cutting speeds, and the depth of your cuts.

If you're new to G-code programming, there are resources available online to help you get started. It's crucial to carefully review and test your program before running it on your workpiece.

Once your program is ready, ensure that your CNC lathe is correctly set up, including the necessary tooling and attachments. Then, load your G-code program into the lathe's control system and proceed to run the program, carefully monitoring the process to ensure smooth operation and a clean finish.

Tips for Mastering CNC Ball Turning

To help you on your journey towards CNC ball turning mastery, here are some helpful tips:

1. Invest in quality tooling and equipment: The quality of your finished product will largely depend on the quality of your tools and machinery. Cheap or low-quality tools may yield unsatisfactory results.

2. Regular maintenance and calibration: Ensure your CNC lathe is regularly maintained, clean, and calibrated to maintain optimal performance and precision.

3. Understand your materials: Different materials have different machining properties and will require specific tools, cutting speeds, and techniques.

4. Start small and practice: Begin with smaller projects and work your way up to more complex pieces as you become more comfortable and skilled with the CNC ball turning process.

5. Seek out resources: Take advantage of online forums, tutorials, and videos to further your knowledge and learn new techniques.

Utilizing these tips and the comprehensive video guide, you'll be well on your way to mastering the art of CNC ball turning and achieving professional results. Remember, practice makes perfect, and with dedication and persistence, you'll soon find yourself creating flawless spheres using this advanced machining technique.

cnc ball turning video

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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