Close this search box.

POM (Delrin/Acetal) Machining Service

HDC is a leading expert in China when it comes to POM CNC Machining services. Specializing in the production of high-precision POM parts, HDC uses state-of-the-art technology and equipment to deliver your desired results. The skilled team at HDC has extensive experience in the field, ensuring that you receive the highest level of expertise and customer service available. With their dedication to excellence, HDC is committed to exceeding your expectations and providing you with the POM CNC Machining services you need to take your project to the next level.

pom (delrinacetal) machining (2)
CNC Nylon Plastic Machined Parts

HDC for POM Machining Service

Polyoxymethylene (POM) or more commonly known as Delrin/Acetal is a semi-crystalline thermoplastic that offers stability, strength, and durability to products. There are multiple other names for POM like kocetal, Ultraform, and celcon. This is so that you don’t confuse any of these interchangeably used names of the product. Major applications of POM (Delrin/Acetal) machining are the manufacturing of car interior parts, dashboard parts, fuel system parts, pipe couplings, shower heads, etc. Here is why you should work with us for the delivery of POM (Delrin/Acetal) parts.

Why Choose Us

Custom Design Option

We deliver custom POM machining options for you. You can now get the prototype developed with our design team before the start of the batch production.

High-quality POM machining service

The material that we select for the precision Acetal milling is of the best quality. Although there are certain grades of the POM that can be used for the manufacturing of parts, we use only the best available material. Furthermore, we have the ISO 9001 certificate that points out our commitment to the delivery of high-quality parts only. 

No rework required

Since we have a high skill of workers and the latest machinery at our disposal we deliver the right thing every time and all the time. Therefore, there is no rework required on the finished parts that we deliver.  

Delivery within the agreed time

With our team of experts and the latest POM Acetal machining tools, we complete orders within time limits as agreed with our clients. So, you will get your POM parts on time and as per our agreed time.

Available materials

Acetal/Delrin has some amazing machinability options to offer for machining. For instance, POM has low friction, high stability, high stiffness, and good machinability. Because of its properties, Acetal is used in the manufacturing of POM precision parts manufacturing like mechanical gears, guides, nuts, screws, etc. There are multiple grades of POM that have different applications based on their different properties. However, we at HDC will help you in the selection of the best material for your part.


Frequently Asked Questions (FAQ) – POM Machining

We unveil our compendium of Frequently Asked Questions (FAQs) meticulously tailored for the domain of POM Machining. Whether delving into the intricacies of Polyoxymethylene or delving into the nuances of machining methodologies, you’ll unearth elucidations for commonly posed queries and glean invaluable intricacies concerning POM’s characteristics, applications, and the attendant challenges it presents. Join us on this intellectual expedition as we navigate through the convolutions of POM, elucidating its profound import across a myriad of industries.pom machining 1

What Is POM?

Polyoxymethylene, abbreviated as POM, represents a top-tier engineering thermoplastic. Commonly recognized as acetal or polyacetal, it belongs to the polymer family, distinguished by its elevated stiffness, low friction characteristics, and outstanding dimensional stability. POM finds frequent application in the production of precision components like gears, bearings, and various mechanical parts. Notably, its resilience against moisture, chemicals, and wear makes it highly suitable for a diverse range of industrial applications.pom machining 2

What Are the Properties of POM?

POM is a rigid plastic that cannot be bonded using adhesives but can be fused together through melting. When melted, POM does not adhere to the steel tools employed for shaping it. It is a robust plastic, approaching the strength of materials like epoxy or aluminum, albeit with a slightly greater degree of flexibility. Furthermore, POM exhibits notable wear resistance compared to other plastics. The following are the typical physical properties of POM.

pom machining 3

Coefficient of friction against steel0.3 m/s, 0.49 MPa0.31 
Coefficient of friction against steel0.3 m/s, 0.98 MPa0.37 
Specific wear against steel0.49 MPa0.65mm3/N/km
Specific wear against steel0.98 MPa0.30mm3/N/km
Coefficient of friction against POM0.15 m/s, 0.06 MPa0.37 
Melting point165oC
Specific thermal capacity1500J/kg/K
Specific thermal conductivity0.31 to 0.37W/m/K
Coefficient of thermal expansion12ppm/K
Tensile yield stress62MPa
Tensile modulus2700MPa
Elongation at yield2.5%
Tensile breaking stress67MPa
Elongation at break35%
Impact strength 80kJ/m2

* The above information about the properties of POM is excerpted from Wikipedia.

What Are the Pros and Cons of POM Compared to Metal for Machining?

Polyoxymethylene, colloquially recognized as acetal, unveils discernible merits and demerits in contrast to metals for machining endeavors. The material’s propensity for minimal friction, resilience to corrosion, innate lightweight attributes, and economical viability bestow upon it a commendable status. Nevertheless, its comparative deficiency in tensile strength, delimited operational temperatures, and susceptibility to liquefaction during machining engender complexities. The discernment between opting for Polyoxymethylene or traditional metals rests upon the nuances of machining prerequisites, the exigencies of distinct applications, and the intricate balance of material traits.

pom machining 4

What Are the Benefits of Using POM for Machining?

POM exhibits inherent merit in the realm of machining, showcasing advantages like diminished friction, resistance to corrosion, an airy structural configuration, dimensional steadfastness, and economical viability. Its expansive utility extends beyond the precincts of precision mechanical constituents to encompass applications as diverse as electrical insulation. The seamless machinability of POM augments operational efficiency, rendering it a multifaceted and pragmatic preference for manufacturers and engineers in quest of superlative efficacy and cost-efficient resolutions.pom machining 5

Which Machining Techniques Are Suitable for Processing POM Parts?

Embarking on the manipulation of POM components necessitates the application of nuanced methodologies. These include the utilization of CNC machining for automated sculpting, turning on a lathe to fashion cylindrical entities, employing milling techniques for the creation of elaborate designs, executing drilling processes to establish apertures, and resorting to injection molding for the streamlined production of voluminous quantities. The discernment of POM attributes proves pivotal in the judicious selection of methodologies for the attainment of precision, refined completion, and operational efficacy in manufacturing.pom machining 6

What Are the Application Areas of POM Machining Parts?

Polyoxymethylene (POM) machining parts serve diverse applications in various industries:

  • Automotive: Used in gears, bearings, and fuel system components.
  • Electronics: Employed for insulators, connectors, and housing in electrical components.
  • Medical Devices: Utilized in surgical instruments, connectors, and drug delivery systems.
  • Consumer Goods: Found in zippers, fasteners, and handles for durability and low friction.
  • Industrial Machinery: Used in precision components like gears, bushings, and couplings.
  • Aerospace: Applied in aircraft components for lightweight, high-precision solutions.
  • Sporting Goods: Utilized in bearings, hinges, and equipment components for durability.
  • Food and Beverage Industry: Suitable for components in food processing and packaging machinery due to resistance to moisture and chemicals.

pom machining 7

POM’s unique properties make it a versatile choice, meeting specific needs across different sectors.

What Are the Challenges in Machining POM?

Machining Polyoxymethylene (POM) presents an array of intricate challenges that significantly impact the manufacturing milieu. These challenges encompass the abrasive disposition of POM, resulting in an expedited rate of tool wear, the generation of heightened thermal energy during the machining process, the emergence of filamentous chips that impede operational efficiency, and the proclivity of the material to adhere tenaciously to cutting implements. The pursuit of precise tolerances and an impeccable surface finish encounters complexity due to the inherent elasticity of POM. Thoughtful selection of coolant agents and mindfulness of environmental variables emerge as pivotal considerations to ascertain an optimum machining environment. Navigating through these challenges mandates meticulous attention to tooling, manipulation of machining parameters, and the adept optimization of procedural intricacies.pom machining 8

How Does Injection Molding Compare to POM CNC Machining?

POM Injection molding and POM CNC machining stand as disparate manufacturing methodologies, each wielding distinct merits and contemplations. Injection molding proves optimal for high-capacity production, orchestrating the creation of identical components with efficacy by infusing molten material into a mold. Nevertheless, this technique accompanies escalated initial tooling expenditures and aligns more favorably with grand-scale production endeavors. It proffers heightened latitude for intricate part design and extends compatibility with an expansive array of materials. Notwithstanding its prowess in attaining meticulous tolerances and sleek surface finishes, the injection molding trajectory unfurls extended lead times and the potential for augmented material wastage.pom machining 9

Conversely, POM CNC machining positions itself as an apt choice for production spans ranging from low to medium volumes. This stems from its diminished initial tooling expenses, rendering it an economically judicious option for modest production batches. The process unfolds within the realm of subtractive manufacturing, wherein a CNC machine methodically excises material from a solid block to manifest individual components. While it grapples with restricted design adaptability when juxtaposed with injection molding, CNC machining distinguishes itself through precision, securing stringent tolerances and commendable surface finishes sans supplementary processes. This method unfurls expeditiously, curating briefer lead times, albeit its penchant for heightened material remnants, especially within intricate components.

Deciphering between these methodologies pivots on variables like production scale, design intricacy, material prerequisites, and fiscal considerations. Each avenue proffers unique virtues, demanding an alignment with the nuanced requisites and aspirations germane to the manufacturing undertaking.

How To Custom POM Machining Parts?

In the pursuit of acquiring custom Polyoxymethylene (POM) machining parts, commence by precisely delineating detailed specifications. Explore reputable manufacturers with specialized expertise in POM machining and solicit comprehensive quotes, factoring in considerations such as cost, lead time, and quality assurance. Assess the capabilities of manufacturers, including their equipment and certifications, while establishing transparent communication channels. Optionally, request a prototype for meticulous quality assessment. Engage in negotiations to finalize terms, place the order, and maintain consistent updates during the production phase. Upon delivery, conduct a comprehensive quality inspection to ensure the custom POM parts align with the predefined specifications and standards. This systematic approach ensures a seamless and successful collaboration with manufacturers for tailor-made POM machining parts.pom machining 10


In navigating the intricacies of POM Machining, we instill confidence that this comprehensive FAQ imparts valuable insights. Spanning the comprehension of its inherent properties, the exploration of apt machining methodologies, and the immersion into diverse application domains, we have addressed pivotal facets. Should further inquiries arise or bespoke POM machining components be requisite, adhere to our delineated procedures for a harmonious collaboration with esteemed manufacturers. We extend gratitude for embarking on the odyssey through the POM realm alongside us.

Collapsible Content with Transition


Is POM machinable?

Yes. Acetal is highly machinable because of its stiffness and lower friction coefficient. Therefore, the material does not lose its shape or form even under moderate levels of pressure and tension. As such, it becomes an ideal plastic for machining and making machined parts.cnc machining plastic parts

Is it possible to make custom parts from Delrin?

Yes. In fact, we at HDC are experts in manufacturing custom parts for our clients. You just have to share the design with our engineering team and we will develop the custom POM part for you.

What is the difference between Homopolymer and copolymer acetal?

There is a slight difference between homopolymer and copolymer acetal i.e. homopolymer has a higher tensile strength than copolymer. Also, homopolymer acetal has a lower coefficient of friction than copolymer therefore, is slightly better for machining applications. However, selecting the exact material varies with the final product you need.

Is it possible to make custom labels on acetal parts?

Yes. You can share the logo or text that you want to see on your product and we will add it to your parts.
Scroll to Top