• ascnc@asianstarcnc.com

Mastering CNC Machinery: An In-Depth Guide to Turning Parts

As technology continues to advance at a rapid pace, computer numerical control (CNC) machinery has revolutionized the manufacturing industry. With CNC machines, manufacturers can produce intricate, high-precision parts for a wide range of applications and industries. In this comprehensive guide, we'll dive deep into the art of CNC turning and explore the processes, technical considerations, and best practices for producing exceptional turned parts.

What is CNC Turning?

CNC turning is a machining process that involves the use of a computer-controlled lathe to remove material from a workpiece, shaping it into the desired form. This process is particularly suited for producing cylindrical, conical, or spherical parts with intricate details, tight tolerances, and smooth surface finishes.

The CNC turning process begins with the workpiece mounted on a spindle in the lathe. A cutting tool, typically made of high-speed steel or carbide, is positioned against the workpiece, with the lathe spinning at a predetermined speed. The cutting tool moves along the workpiece, accurately removing material following the programmed path.

The Role of Turning in CNC Machining

Turning is one of the most fundamental operations in CNC machining. It is an essential component in the production of various parts for industries like aerospace, automotive, medical, electronics, and more. Some typical parts created through CNC turning include shafts, screws, bushings, gears, and couplings.

CNC turning offers several advantages over traditional (manual) lathe operations, including faster production speeds, increased precision, and reduced human error. Additionally, with advanced software and automation options, CNC turning enables the cost-effective production of both small and large batches.

Key Factors in Producing CNC Turned Parts

When it comes to CNC turning, several factors contribute to the quality and success of the final product. These factors include:

1. Material Selection – The choice of material will impact the machinability, surface finish, and performance of the turned part. Common materials used in CNC turning include aluminum, brass, stainless steel, titanium, and plastics, each with its specific properties and capabilities.

2. Machine Setup – Proper setup is critical for ensuring precision in CNC turning. This includes accurate alignment of the workpiece and cutting tool, programming the correct spindle speed and feed rate, and selecting the appropriate cutting tool geometry.

3. Tooling – The cutting tool plays a significant role in the success of a CNC turning operation, as its geometry and cutting parameters will determine the overall quality, surface finish, and dimensional accuracy of the turned part.

4. Coolant – The use of coolant is essential in CNC turning to reduce heat generated during the machining process, preventing damage to the workpiece and extending tool life.

5. Quality Control – Regular inspection and maintenance are crucial in maintaining the accuracy and precision of CNC turned parts. This includes calibrating the machine and measuring the dimensions of the workpiece throughout the production process.

CNC Turning Techniques and Best Practices

To optimize the production of CNC turned parts, it's crucial to stay up-to-date with the latest techniques and best practices. Here are a few insights to consider:

1. Design for manufacturability – Before starting production, ensure that the part's design is optimized for manufacturability. This includes analyzing the geometry of the part, selecting the appropriate material, and optimizing the machining process through CAM software.

2. Maintain proper spindle speed and feed rate – A critical factor in achieving a high-quality, accurately turned part is the proper combination of spindle speed and feed rate. Overly high speeds may cause excessive heat and wear, whereas low speeds can result in increased tool pressure and poor surface finish.

3. Use the right cutting tool – It's essential to choose the appropriate cutting tool for the specific material and part geometry. Correct tool selection will improve productivity, extend tool life, and lead to better part quality.

4. Optimize chip control – Proper chip control is vital for maintaining a clean and safe workspace and achieving smooth surface finishes. Effective chip control also helps prolong tool life and minimize tool breakage.

5. Leverage simulation software – Using computer-aided manufacturing (CAM) software to simulate the CNC turning process provides valuable insights into potential problems before actual production begins, saving time and resources.

By understanding and mastering the nuances of CNC turning, manufacturers can ensure a smooth, efficient, and high-quality production process, resulting in exceptional turned parts. Keeping up with the latest techniques and best practices is crucial for maximizing the potential of CNC machinery and staying competitive in a rapidly-evolving industry. Learning never ends in manufacturing, and in CNC turning, there is always room to refine your skills, knowledge, and craft.

cnc machinery turning parts

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

  • Q2.Do You Have Stock
  • Q3.What Is Your Production Capacity?
  • Q4.Where Is Your Factory?
  • Q5.Can You Provide Samples?
  • Q6.How About Your After-sales Service?
Get The Best Quotes Now