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Precise CNC Pom Machining Services

Introducing our Precise CNC POM Machining Services – the ultimate solution for all your POM component needs. We understand that precision, quality, and efficiency are crucial factors in today’s competitive market, which is why we focus on delivering unparalleled results that exceed expectations.

  • Get Precise Results with CNC Pom Machining Services from ETCN

• ETCN is the leading provider of CNC Pom Machining services
• Offering a wide range of precision machining and manufacturing solutions
• Utilizes Computer Numerical Control (CNC) technology to fabricate intricate parts with accurate tolerances
• Experienced team of engineers and technicians possess knowledge and expertise
• Advanced technologies and processes ensure reliable, durable, high-quality parts
• Contact for CNC pom machining needs.

Get Precise Results with CNC Pom Machining Services from ETCN
Here's a comprehensive table outlining the essential characteristics of machining POM (Polyoxymethylene) with respect to industrial standards
ParameterSpecificationMeasurement Unit
Specific Weight1.41 - 1.43g/cm³
HardnessR110 - R120Rockwell
Thermal Conductivity0.23W/m·K
Chemical ResistanceGoodN/A
Electrical PropertiesInsulatingN/A
Material Strength8,000 - 12,000psi
Surface FinishSmoothN/A
Machining POM:
Machining AspectSpecification
Cutting ToolsCarbide or HSS tools
Tool WearLow
Cutting Temperatures100 - 130°C (212 - 266°F)
Cutting Speeds300 - 1,000 m/min

Additional Considerations:

  1. Cutting Fluids: POM does not typically require cutting fluids due to its low friction coefficient. However, if used, choose water-soluble cutting fluids or compressed air for cooling.

  2. Lubricants: When necessary, use a small amount of mineral oil-based lubricants to prevent excessive heat buildup and ensure smooth machining operations.

  3. Safety Precautions: Ensure proper ventilation and wear appropriate personal protective equipment, such as safety goggles and gloves, to protect against flying chips and potential exposure to any additives in the material.

By considering these parameters and guidelines, you can machine POM in compliance with industrial standards while achieving optimal results.

Applications of CNC Pom Machining Services
  • Applications of CNC Pom Machining Services

• POM is an ideal choice for components such as gears, bearings, and bushings in the aerospace industry due to its high strength and excellent wear resistance, with CNC machining enabling precise manufacturing with tight tolerances and intricate designs.
• The medical industry also extensively utilizes POM for its biocompatibility, chemical resistance, and low friction properties, with CNC machining producing accurate parts for surgical instruments, implantable devices, and equipment housings.
• In the automotive industry, CNC machining is used to manufacture parts requiring high strength and wear resistance such as gears, fuel system components and electrical connectors. The process ensures repeatability and accuracy of the final product while offering faster production times and lower costs compared to traditional manufacturing methods.

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CNC POM Machining: Everything You Need to Know

Discover the world of CNC machining with ETCN’s comprehensive guide to CNC POM machining! From the fundamentals to expert functionalities, this guide delivers the necessary insights to unlock the full potential of this transformative technology. Gain a profound understanding and explore endless possibilities!

What is POM?

What is POM?

Polyoxymethylene, commonly referred to as POM, is a thermoplastic material widely used in various industries due to its superior strength, stiffness, and toughness. POM is a highly crystalline polymer that offers excellent resistance to abrasion, impact, and fatigue. It is also resistant to moisture, chemicals, and high temperatures.

POM Material Characteristics

POM has a high melting point, typically from 165°C to 175°C. It is a challenging, durable thermoplastic that withstand repeated friction and wear. One of the critical characteristics of POM is its low coefficient of friction, making it an excellent choice for applications that require smooth and effortless sliding motion. Additionally, POM has a low water absorption rate, which allows it to maintain its mechanical properties in damp or humid environments.

POM Applications

POM is widely used in various automotive, electrical, and medical industries. Its excellent mechanical properties make it an ideal choice for manufacturing gears, bearings, and other components that require high stiffness and strength. POM is also used to produce electrical switches, connectors, and housings due to its insulating properties. In the medical industry, POM is used for manufacturing surgical instruments due to its biocompatibility and resistance to sterilization.

Benefits of POM Machining

POM is an excellent machining material due to its high dimensional stability and resistance to deformation. It is easy to work with, making it an ideal choice for CNC machining. Additionally, POM has a low melting point, which allows for faster machining speeds and less wear and tear on the cutting tool. Finally, POM produces excellent surface finishes due to its low viscosity and ability to flow into intricate shapes.

POM vs. Acetal and other Engineering Thermoplastics

POM and Acetal are both engineering thermoplastics that share similar properties. However, POM has higher dimensional stability, better creep resistance, and more excellent toughness than Acetal. Additionally, POM has a lower water absorption rate than Acetal, which allows it to maintain its properties in humid environments. Other engineering thermoplastics, such as Nylon and Polycarbonate, have different strengths and weaknesses; for instance, Nylon is known for its high tensile strength, while Polycarbonate is known for its excellent impact resistance.

Popular POM Grades Used in CNC Machining

Several popular POM grades are used in CNC machining, each with unique characteristics and advantages. Copolymer POM has excellent chemical resistance and is often used in manufacturing automotive components, gears, and sheet metal packaging. Homopolymer POM is highly resistant to wear and fatigue and is often used to produce slide bearings, pump components, and conveyor belts. Finally, Glass-Reinforced POM has exceptionally high stiffness and strength, which makes it ideal for high-wear applications that require superior dimensional stability. That includes gears for engines, pumps and clutches, conveyor belts, chain links, and and anything subject to constant friction and wear.

Why Use CNC Machining for POM?

Why Use CNC Machining for POM?

Polyoxymethylene (POM) is a thermoplastic material commonly used in manufacturing due to its unique properties. It is a strong and durable material resistant to chemicals, raised temperatures, and corrosion. POM is typically used to produce gears, bearings, and other mechanical parts that require strength and toughness. However, manufacturing such precise parts can be challenging. This is where CNC machining comes in.

POM Machining Services

CNC (Computer Numerical Control) machining is a technology that automates parts production by using computer-controlled tools. CNC machining allows for producing highly accurate details that are consistent in quality and size. In manufacturing POM parts, CNC machining proves particularly beneficial, as it can produce complex shapes and high precision. POM machining services using CNC technology are ideal for manufacturers who require parts with precise specifications and strict tolerances.

Precision Parts Machining with CNC

CNC machining provides precision parts that are identical in quality and size. This is important for manufacturing POM parts, where precision is vital. Machining POM using CNC technology ensures that the parts produced meet the specifications outlined in the design. With CNC machining, manufacturers can create complex POM parts with tight tolerances, resulting in pieces that function properly and are reliable for end-users.

5-Axis CNC Machining for Complex POM Parts

CNC machines come in various designs, with 3-axis and 5-axis devices being the most common in manufacturing POM parts. 5-axis CNC machining gives manufacturers an edge when producing complex POM parts that would otherwise be challenging to make using 3-axis machines. 5-axis CNC machines can handle complex geometries and shapes, which means that POM parts with undercuts and intricate features are more accessible to machine. This technology’s advantage is its precision working area, which meets the needs of detailed and complex tools.

Custom CNC POM Machining for Unique Applications

Custom CNC POM machining is ideal for unique applications and the production of bespoke parts. With CNC technology, manufacturers can produce parts that don’t conform to standardized designs. Custom CNC machining allows manufacturers to make varying POM pieces with specific tolerances, sizes, and shapes. This allows them to cater to different requirements by creating custom parts that meet predetermined specifications.

CNC Milling vs. Injection Molding for POM Parts

CNC milling and injection molding are standard methods used in producing POM parts. CNC milling is ideal for producing low-volume parts with more excellent precision, while injection molding is best for producing high-volume parts. CNC milling is more cost-effective for short production runs and proves that the function of a piece is appropriate. However, it may not be as cost-effective as injection molding for high-volume production of POM parts, even if the form has been confirmed to work. In summary, it’s best to use injection molding for large volumes and CNC milling for low and medium volumes.

In conclusion, CNC machining is a crucial technological advancement in the manufacturing industry that enables the production of high-quality parts at an affordable cost. However, it is essential to match the required process with the company’s production needs, whereby injection molding is suitable for high-volume runs and CNC milling for low to medium volumes pieces. Overall, CNC machining is the right choice for companies producing complex or custom POM parts that require tight tolerances, precise dimensions, and high accuracy.

Factors to Consider in CNC POM Machining

Factors to Consider in CNC POM Machining

CNC machining of POM (Polyoxymethylene) plastic parts is crucial for many industries, such as automotive, electrical, healthcare, and consumer goods. POM material is also known as Acetal, Delrin, and Celcon. It is a high-performance engineering thermoplastic with excellent properties like high stiffness, dimensional stability, and good wear resistance. POM machining involves cutting, drilling, milling, turning, and facing. However, several factors can affect the quality of machined POM parts. This article will explore the critical factors one should consider when machining CNC POM parts.

POM Material Properties and How They Affect Machining

The material properties of POM play a significant role in the CNC machining process. POM is characterized by excellent dimensional stability, low coefficient of friction, high stiffness, and good resistance to wear and fatigue. These beneficial material properties enable POM to withstand high loads and stresses and provide high accuracy and repeatability in machined parts. However, POM is also susceptible to deformation and stress during machining due to its low thermal conductivity, high thermal expansion coefficient, and low melting temperature. Therefore, CNC machinists must understand these properties and their effects on the machining process to achieve high-quality POM parts.

Dimensional Stability of POM Parts

Dimensional stability is a crucial factor in CNC POM machining. POM has excellent dimensional stability, which means it retains its shape and size even under varying temperature and humidity conditions. However, dimensional stability can be compromised by improper machining techniques or tool wear. For instance, if the cutting tool generates excessive heat during machining, it can cause thermal expansion in the POM part, leading to dimensional inaccuracies. Therefore, CNC machinists must keep the machining environment within the recommended temperature and humidity range and use proper cutting parameters and coolant to minimize thermal effects.

Friction and Wear Resistance in Machined POM Parts

POM has excellent friction and wear resistance, making it an ideal material for applications requiring sliding and bearing. However, these properties can be affected by improper machining techniques and tool selection. For example, using high-speed steel tools instead of carbide may cause excessive tool wear, leading to poor surface finish and dimensional inaccuracies. Using improper lubrication or coolant may also generate extreme heat and friction, causing the POM part to melt or warp. Therefore, proper cutting tools and coolant are essential to maintain optimum friction and wear resistance in machined POM parts.

High Stiffness and Toughness in POM Material

POM exhibits high stiffness and toughness, making it an ideal material for CNC machining applications requiring stiffness and strength. However, these properties can also pose challenges during machining. For instance, the high stiffness of POM may generate high cutting forces, leading to tool wear and chatter. Additionally, the toughness of POM may cause the machined surface to chip or break, resulting in poor surface finish and dimensional inaccuracies. Therefore, CNC machinists must use proper cutting tools and techniques to optimize the machining process and avoid damaging the POM part.

Deformation and Stress in POM Parts During Machining

Deformation and stress are common issues that occur during CNC POM machining. POM is a plastic material with low thermal conductivity, meaning it does not dissipate heat as quickly as metals. This low thermal conductivity can cause POM to melt or deform when subjected to high-speed cutting or high-cutting forces. Additionally, POM may experience internal stresses due to uneven cooling or stress concentration caused by sharp corners or deep cavities. These issues can cause dimensional inaccuracies or even failure in the POM part. To prevent these problems, CNC machinists should use proper cutting conditions, tool selection, and coolant during machining to reduce thermal effects and stress concentration.



In conclusion, CNC POM machining is a crucial process that requires careful consideration of several factors, including POM material properties, dimensional stability, friction and wear resistance, high stiffness and toughness, and deformation and stress. Understanding these factors and their effects on machining is essential to achieve high-quality POM parts with optimal performance and reliability. CNC machinists should use proper cutting tools, conditions, and coolant to reduce the impact of thermal effects and stress concentration and optimize the CNC POM machining process.

The CNC POM Machining Process

CNC Machining Tools and Methods for POM Material

CNC POM machining requires the use of specific tools and techniques that are optimized for this material. The most commonly used tools for CNC POM machining include high-speed steel (HSS) cutters, carbide cutters, and diamond-coated cutters. The selection of a suitable cutting tool largely depends on the geometry, size, and type of POM part to be machined. POM parts’ most popular CNC machining methods include drilling, milling, and turning. These methods are highly effective at producing complex and intricate geometric shapes with tight tolerances.

CNC Machining Parameters for POM Parts

Various parameters influence the accuracy and quality of CNC-machined POM parts. These include the cutting speed, feed rate, depth of cut, tool wear, and the cutting tool used. Cutting speed, feed rate, and depth of cut directly impact the cutting force, chip thickness, and temperature generated during the CNC machining process. Therefore, finding the right balance for these parameters is crucial to achieving high-quality POM parts. Another critical parameter is tool wear, which can cause surface finish and dimensional accuracy problems. To avoid these issues, regularly monitoring and replacing worn-out tools is essential.

Quality Control and Inspection for CNC Machined POM Parts

Quality control and inspection are vital in ensuring that machined POM parts meet the necessary standards. Quality control includes measures taken to prevent defects, whereas assessment involves verifying that the finished parts are of the required quality. The most commonly used quality control and inspection methodologies in CNC POM machining include statistical process control (SPC), first article inspection, and final inspection. SPC involves monitoring critical machining parameters to ensure machined parts remain within acceptable tolerance ranges. First article inspection is performed on the first part taken off the production line to verify that all dimensions and specifications are accurate. Final inspection occurs after the details have been fully processed, confirming that all components meet the specified criteria.

Common Challenges and Solutions in POM Machining

Several challenges may arise during the CNC POM machining process, mainly due to the material’s low thermal conductivity and high thermal expansion coefficient. These characteristics can cause issues such as warpage, deformation, and burr formation, significantly reducing machined part quality. To overcome these challenges, selecting the appropriate tools and machining parameters is essential. It’s also crucial to have good cooling during machining, ensuring that the POM material’s temperature remains within acceptable limits.

Best Practices for CNC POM Machining

To achieve successful CNC POM machining, several best practices should be followed. First, selecting the correct machining parameters and tools is crucial. Before starting a CNC POM machining process, thoroughly knowing the material’s properties and characteristics is essential. Also, monitoring and adjusting machining parameters is necessary to maintain high-quality parts. Second, proper machine maintenance and cleaning is essential to prevent wear and tear in the CNC machine’s components. Third, lubrication and cooling during machining are necessary to ensure that the POM material remains within acceptable temperature limits. Finally, performing regular quality control and inspection checks is critical to verify that machined POM parts meet the required standards.


In this comprehensive CNC POM machining study, we explored the key points and takeaways associated with this highly advanced manufacturing process. CNC POM machining uses computer-controlled machines to shape and mold POM (Polyoxymethylene) parts. Compared to traditional machining techniques, CNC POM offers faster production times, greater precision, and the ability to create highly complex shapes.

The Future of CNC POM Machining:

As industry trends and advancements continue to shape the manufacturing world, the future of CNC POM machining is looking bright. With new materials, such as advanced polymers and composites, CNC POM machining will become even more versatile and efficient. Additionally, increasing automation and robotics in the manufacturing industry will enable CNC POM machining to become even more streamlined and cost-effective.

Choosing the Right CNC Machining Service for POM Parts:

When selecting a CNC machining service for POM parts, it is essential to consider the quality of the equipment used, as well as the expertise of the team. A reputable CNC machining service should have state-of-the-art equipment, experienced technicians, and a proven track record of producing high-quality POM parts. It is also essential to consider the service’s cost-effectiveness and ability to deliver parts on time and within budget.

Final Thoughts on CNC POM Machining and its Advantages:

Overall, CNC POM machining offers many benefits to manufacturers looking to produce high-quality parts quickly and efficiently. Its precise, computer-controlled operation allows for creating complex shapes and intricate designs. At the same time, its speed and cost-effectiveness make it an attractive option for businesses of all sizes. As the industry continues to evolve, we can expect to see even more advanced forms of CNC POM machining emerge, offering even more significant advantages to manufacturers worldwide.

Frequently Asked Questions

Frequently Asked Questions

Q: What is CNC POM machining?

A: CNC POM machining is a process of using computer numerical control (CNC) machines to produce precision parts made from POM (polyoxymethylene), also known as Delrin or polyacetal, which is an engineering thermoplastic known for its high stiffness, good dimensional stability, and excellent mechanical properties.

Q: Why use POM plastic for CNC machining?

A: POM is a popular choice for CNC machining because it has low friction and high wear resistance, making it ideal for producing precision parts that require toughness, hardness, and chemical resistance. Additionally, POM’s excellent mechanical properties make it suitable for various applications in various industries.

Q: What are the benefits of CNC-machined POM parts?

A: CNC machined POM parts have several advantages, including high precision, excellent dimensional stability, and good surface finish. POM is also known for its low coefficient of friction, which makes it ideal for applications where low friction is necessary, such as gears, bearings, and sliding components.

Q: What is the CNC machining process for POM plastic?

A: The CNC machining process for POM plastic involves using computer-aided design (CAD) software to create a 3D model of the part, which is converted into machine instructions for the CNC machine. The CNC machine then uses various cutting tools to remove material from a block of POM plastic to produce the final part.

Q: What are the mechanical properties of POM plastic?

A: POM plastic is an engineering thermoplastic with excellent mechanical properties, including high stiffness, good dimensional stability, and high wear resistance. POM is also known for its toughness and hardness, making it suitable for applications that require high-performance materials.

Q: What are the advantages of using a 5-axis CNC machine for POM machining?

A: Using a 5-axis CNC machine for POM machining offers several benefits, including increased precision and accuracy, reduced setup times, and the ability to produce complex geometries. This makes 5-axis CNC machining ideal for creating high-precision parts with intricate designs.

Q: What is the difference between homopolymer and copolymer POM?

A: Homopolymer POM is a type of POM plastic made using a single monomer, while copolymer POM uses two different monomers. Homopolymer POM is known for its high stiffness and good dimensional stability, while copolymer POM has better impact resistance and higher toughness.

Q: What industries typically use CNC-machined POM parts?

A: CNC machined POM parts are used in various industries, including automotive, aerospace, medical, and electronics. POM’s excellent mechanical properties and low friction make it ideal for producing precision parts that require high-performance materials.

Q: What is the wear resistance of POM plastic?

A: POM plastic has a high wear resistance, making it ideal for producing precision parts that require toughness and hardness. POM’s excellent mechanical properties and low friction make it suitable for applications where wear resistance is necessary, such as gears, bearings, and sliding components.

Q: What should I look for in a CNC machining services provider for POM plastic parts?

A: When selecting a CNC machining services provider for POM plastic parts, you should look for a company with experience with POM machining and using state-of-the-art equipment and techniques for producing high-quality parts. Additionally, it would be best to consider factors such as lead time, cost, and customer service when choosing a provider.


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