POM
Custom POM Machining Service
Provide customized POM parts processing services at competitive prices, from rapid prototyping to on-demand production. Customize high-strength, precision, and surface-finished POM parts using advanced CNC machining technology, instant quotation, and DFM analysis in seconds, and get high-quality POM parts in a few days.
- Advanced Equipment & Cost-Effective Price
- 10+ Years of POM Machining Services
- ISO 9001 & ISO13485 Certified Factory
- High Quality and Consistency
- Fast Turn-around Production
- 100% POM Part Inspection
Our POM Machining Capabilities
NOBLE provides high-quality POM precision machining services, from prototype design to batch POM CNC machining parts, we can assist you in manufacturing POM parts with complex geometries and high aesthetic requirements. Our skilled experts and advanced CNC machining technology enable us to provide a wide range of on-demand manufacturing services.
Price | $$$ |
Lead Time | < 7 days |
Wall Thickness | 0.045 in. – 0.140 in. (1.143mm – 3.556mm) |
Tolerances | +/- 0.003 in. (0.08mm) with an included resin tolerance that can be greater than but no less than +/- 0.002 in./in. (0.002mm/mm) |
Max Part Size | 18.9 in. x 29.6 in. x 8 in. (480mm x 751mm x 203mm) |
Available POM at NOBLE | Delrin 100P, Delrin 100AF, DuPont Delrin 500AF, POM-H+PTFE(Delrin 500P) |
Characteristics of POM Machining Materials
POM commonly known as acetal or Delrin, is a highly versatile thermoplastic material often chosen for CNC machining due to its excellent mechanical and thermal properties.
Features | Info |
Subtypes | POM Copolymer, POM Homopolymer, POM-H+PTFE |
Process | CNC Milling, CNC turning, laser cutting, injection molding, drilling and tapping |
Tolerance | +/- 0.003 in. (0.08mm) with an included resin tolerance that can be greater than but no less than +/- 0.002 in./in. (0.002mm/mm) |
Applications | Automotive Parts, Industrial Equipment, Medical Devices, Electronics and Electrical Components, Aerospace Parts, Robotics Parts |
Finishing Options | Polishing, Sand Blasting, Laser Carving, Painting, Chroming (for Modified POM Grades), Tumbling, Flame Polishing |
Pros and Cons of POM for CNC Machining
POM is a high-performance thermoplastic, known for its excellent mechanical properties, wear resistance, chemical stability, ease of machining, and durability in CNC machining. It is an ideal choice for a variety of CNC machining applications. It is widely used in CNC machining precision parts for demanding applications in industries such as automobiles, electronics, medical equipment, and industrial machinery. However, POM also has certain limitations, including sensitivity to heat and low temperatures, UV degradation,n and potential warping during machining. The correct CNC machining method needs to be selected. The following details the advantages and disadvantages of POM in CNC machining:
High Strength and Rigidity
POM offers excellent tensile strength and stiffness, making it suitable for durable, load-bearing parts like gears and structural components that require high strength and resistance to deformation.
Low Friction and Self-Lubricating
With a low coefficient of friction, POM reduces wear on moving parts, providing natural lubrication and making it ideal for applications like gears and bearings that benefit from reduced friction.
Excellent Dimensional Stability
POM maintains precise dimensions due to minimal shrinkage and warping, ensuring high accuracy in CNC machining, even for tight tolerances and complex parts.
Good Chemical Resistance
POM resists a wide range of chemicals, including oils and solvents, making it ideal for components exposed to harsh chemical environments.
Good Wear and Abrasion Resistance
POM’s durability against wear and abrasion makes it suitable for moving parts, like gears and bushings, that experience continuous friction without degrading.
Lightweight
POM is lightweight compared to metals, making it an excellent choice for applications where strength is required without adding significant weight.
Excellent Mechanical Properties
POM is known for its high strength, stiffness, and hardness, even at low temperatures. This makes it an ideal choice for CNC machining parts that need to withstand high mechanical stresses without deformation or failure. POM’s high tensile strength and deformation resistance make it an excellent CNC machining material for precise load-bearing applications. POM is often used in CNC machining to manufacture gears, bearings, bushings, and other mechanical parts, where high load-bearing capacity and wear resistance are critical.
Excellent Electrical Insulation Properties
POM has excellent electrical insulation properties, making it an ideal material for CNC machining of electrical and electronic applications. Due to its excellent electrical insulation properties, POM is often used in CNC machining to produce electrical connectors, switches, insulators, and electronic component housings.
Low UV Resistance
POM degrades under prolonged UV exposure, which can cause brittleness and limit its use outdoors or in environments with high UV radiation, unless treated with UV stabilizers.
Temperature Sensitivity
POM softens at higher temperatures, limiting its use in applications exposed to extreme heat. It’s best suited for environments below 212℉
Moisture Absorption
POM absorbs moisture from the air, which can cause dimensional changes and instability in parts unless carefully dried and controlled during processing and storage.
Brittleness at Low Temperatures
POM becomes brittle in cold temperatures, making it less suitable for applications in freezing or sub-zero environments where flexibility is needed.
Low heat deflection temperature
POM has a lower heat deflection temperature than many other engineering plastics and metals, which means it begins to soften at temperatures around 100°C. This limits its use in high-temperature environments. Therefore, POM should not be used in applications where the operating temperature exceeds its heat deflection temperature. In high-temperature applications, alternative materials such as PEEK or PBT may be more suitable.
Potential for warping and shrinkage
POM has a relatively high coefficient of thermal expansion and may warp or shrink after cooling if not handled properly. This can affect the accuracy of CNC machining of parts, especially those with thin walls or complex geometries. Proper temperature control during CNC machining and post-processing is essential to prevent warping or dimensional changes. Solution: It is important to allow POM parts to cool evenly and use appropriate molding or cooling techniques to reduce the risk of deformation.
High CNC machining costs
POM is more expensive than other engineering plastics such as PVC or ABS. This increases CNC machining costs, especially for large-scale production. Solution: While CNC machining may be more expensive, POM’s durability and performance in demanding applications can justify its cost in high-performance and long-life products.
Limited Electrical Insulation
POM provides some insulation but is less effective than materials like PTFE or composites for electrical applications requiring superior electrical resistance.
Types of POM Machining Materials
POM materials have broad application prospects and important value in CNC machining. With advanced equipment and years of experience, our experts consistently provide POM parts that exceed customer expectations, reflecting our mastery of manufacturing complexity.
Delrin 100P
Delrin 100P is a general-purpose POM material known for its excellent mechanical properties, including high tensile strength, stiffness, and dimensional stability. It is easy to CNC machine and provides good wear resistance, making it ideal for precision parts, gears, bearings, automotive components, and machinery applications.
Tensile Modulus: 2,800 MPa
Tensile Strain (Yield): 20 – 30%
Rockwell Hardness: M-Scale: 90; R-Scale: 115
Heat Deflection Temperature: Unannealed: 190°F; Annealed: 210°F
Delrin 100AF
Delrin 100AF is a modified version of Delrin 100P, enhanced with PTFE (Polytetrafluoroethylene) for improved low friction and wear resistance. This modification makes it perfect for applications that require reduced friction, such as bearings, bushings, and sliding parts, where long-term durability and smooth performance are critical.
Tensile Modulus: 2,800 – 3,000 MPa
Tensile Strain (Yield): 20 – 25%
Rockwell Hardness: M-Scale: 90 ; R-Scale: 115
Heat Deflection Temperature: Unannealed: 185°F; Annealed: 205°F
DuPont Delrin 500AF
DuPont Delrin 500AF is another PTFE-modified POM, offering superior frictional properties and wear resistance. It is designed for high-performance, high-load, and high-speed applications. Commonly used in gears, bushings, and industrial machinery components, Delrin 500AF excels in environments demanding both strength and low friction for enhanced durability and efficiency.
Tensile Modulus: 2,600 – 3,000 MPa
Tensile Strain (Yield): 20 – 25%
Rockwell Hardness: M-Scale: 90-92; R-Scale:115-118
Heat Deflection Temperature: Unannealed: 185°F; Annealed: 205°F
POM-H+PTFE(Delrin 500P)
This is a PTFE-enhanced grade of POM designed to provide excellent wear resistance and reduced friction. It is commonly used in precision components such as bearings, seals, and moving parts. The addition of PTFE to CNC machining improves its performance in dynamic and high-load environments, ensuring longer service life and reliable operation.
Tensile Modulus: 2,700 – 2,900 MPa
Tensile Strain (Yield): 20 – 25%
Rockwell Hardness: M-Scale: 90; R-Scale: 115
Heat Deflection Temperature: Unannealed: 190°F; Annealed: 210°F
Surface Finishing Options for POM Machining
Surface preparation plays a vital role in improving the performance and appearance of your POM CNC machined parts. The right precision CNC machining techniques can increase wear resistance, reduce friction, and provide a smoother surface for assembly. Improve the quality of your projects today!
Polishing
Working on metal and hard plastics, our polishing uses highly efficient machinery to get our parts between Ra 0.8~Ra0.1 for a cleaner surface.
Sand Blasting
Band blasting cleans the surface of any impurities and peels coating through the propelling of blast media streams over the parts.
Laser Carving
Helpful in brand recognition or parts organization, we use laser carving that applies various printing methods during full-scale production to quickly embed barcodes, lettering and logos on the parts.
Painting
Painting involves Spray droplets can be dispersed uniformly or in fine amounts to cover a wide surface area and bring out greater color to the part.
Chroming (for Modified POM Grades)
Chroming involves electroplating a layer of chrome onto POM components, typically modified with additives. It enhances wear resistance, hardness, and aesthetic appeal while improving the part’s corrosion resistance in demanding environments.
Tumbling
Tumbling titanium smooths its surface, often resulting in a matte finish. It’s used for deburring or preparing titanium parts for further finishing or aesthetic enhancement.
Flame Polishing
Flame polishing uses a controlled flame to slightly melt the surface of POM, smoothing out imperfections and creating a high-gloss finish. It’s commonly used for clear, transparent POM parts where aesthetics are crucial.
Custom POM Machining Parts Display
Check out our over a decade of custom POM machining parts, including precision POM prototypes and parts from our valued customers.
Applications of POM CNC Machining
POM is a highly engineered thermoplastic material that is widely used in CNC machining due to its excellent mechanical properties, precision, and versatility. POM is an ideal choice for a wide range of industries due to its durability, high strength, and dimensional stability. Its applications include automotive, aerospace, electronics, medical, consumer products, and industrial machinery. CNC machining can produce highly complex and precise POM parts that benefit from the unique properties of POM, thus helping to improve the functionality, efficiency, and life of the products used.
Automotive Parts
CNC-machined POM is ideal for automotive parts such as gears, bushings, and fuel system components. POM's low coefficient of friction and excellent wear resistance make it an ideal material for CNC machining gears, bearing,s and other moving parts in automotive systems, increasing the life and reliability of engine and transmission components.
Industrial Equipment
POM produces precision parts like pulleys, rollers, and bearings. Its wear resistance and low friction make it an excellent choice for industrial machinery, ensuring components perform reliably under high stress and continuous motion.
Medical Devices
POM is used in CNC machining precision parts for medical devices, including connectors, housings, and surgical instruments. Its high strength, chemical resistance, and biocompatibility make it suitable for medical applications that require durability and safety. POM's chemical resistance and dimensional stability make it useful for CNC machining of lightweight but strong parts in prosthetics and orthotics, and the material's CNC precision machining capabilities enable it to produce customized parts for individual patients.
Consumer Goods
POM’s durability, lightness, and wear resistance make it ideal for consumer product applications that need to withstand frequent handling and use. Parts such as handles, knobs, and internal gears in household appliances such as dishwashers, washing machines, and blenders are often CNC machined from POM. These parts benefit from POM’s wear resistance and ability to withstand repeated use.
Aerospace Parts
CNC-machined POM is used in aerospace for lightweight, durable parts like bushings, seals, and actuators. Its strength, dimensional stability, and resistance to temperature variations make it suitable for demanding aerospace applications.
Robotics Parts
POM is used in the production of robotic joints, gears and end-effectors, and is characterised by low friction and high durability. Its precision and strength help minimize wear, making it an ideal material for robotic systems requiring reliability in repetitive tasks.
If you are looking for a rapid prototyping manufacturer or a CNC machine shop to fabricate small, medium-volume, or mass-production products, NOBLE is an ideal choice.Our well-trained and experienced staff manufactures parts in line with drawings on modern CNC machines, with the highest accuracy and processing quality in all sizes.In addition, we provide professional design considerations for your CNC machining projects.
Want to get the most professional and fastest service for your CNC machining project? Upload your CAD files now and obtain a quote!