
POM Material: Ideal For Precision Parts Processing, Why Is It So Popular?
In the field of hardware precision parts processing, the choice of materials is crucial, which directly affects the performance, life and cost of parts. In recent years, POM materials have become the first choice of more and more engineers and manufacturers due to their excellent comprehensive properties. So, what is the charm of POM? Why does it stand out among so many materials?
POM Engineering Plastics With Excellent Performance
POM known as polyformaldehyde, is a thermoplastic engineering plastic with high crystallinity. It has excellent mechanical properties, wear resistance, chemical resistance and dimensional stability, known as "super steel" or "Saisteel".
Outstanding Properties of POM Materials
- High strength, high rigidity: POM mechanical strength close to metal, can withstand large loads and shocks, suitable for manufacturing gear, bearings, sliders and other stressed parts.
- Excellent wear resistance: POM has low friction coefficient, good self-lubrication, and wear resistance is more than 8 times that of metal, which is especially suitable for making parts that require frequent friction.
- Good dimensional stability: POM shrinkage rate is low, water absorption is small, even in a humid environment can maintain dimensional stability, to ensure the accuracy and fit of parts.
- Excellent chemical resistance: POM has good resistance to most organic solvents, oils and weak acids and bases, and is suitable for a variety of complex working environments.
- Easy processing, low cost: POM is easy to injection molding, extrusion and machining, high production efficiency, relatively low cost, suitable for mass production.

Comparison of Mechanical Properties
| Characteristic | POM | Polyamides(PA) | Polycarbonate(PC) | PEEK |
| Rigidity | High rigidity, close to metal | Medium rigidity, good toughness | High rigidity but high brittleness | Extremely rigid |
| Abrasion Performance | Excellent, self-lubricating characteristics outstanding | Fine, but need to add lubricant | Poor, easy to scratch | Excellent resistance to high temperature wear |
| Friction Coefficient | Ultra-low (0.1~0.3) | Medium (0.3~0.5) | High (0.5~0.7) | low(0.2~0.4) |
| Creep Resistance | Excellent (small deformation under long-term load) | medium | Poor (prone to stress cracking) | terrific |
How To Choose a POM Material CNC Machining Service Provider
If you have no experience in POM material processing, or need to process high-precision, high-quality parts, it is recommended to choose professional POM material processing services. With rich experience, advanced equipment and strict quality control system, Dahong Precision can provide you with high quality CNC parts processing services for non-standard POM
Experience and professionalism
Choose suppliers with rich experience in PEEK material processing.
Equipment and Technology
Ensure that suppliers have advanced CNC machine tools and testing equipment.
Quality Control
Understand the quality control process of suppliers, including material certification and machining accuracy testing.
Customization Capability
Suppliers should be able to provide customized solutions based on customer needs.
Delivery Time and Cost
Evaluate the delivery capability and price competitiveness of suppliers.
The Application of POM In Precision Parts Processing
With the following excellent characteristics, CNC machining is mainly used to manufacture high-precision, low-friction mechanical parts
Industrial Packaging Machinery
Gear: POM material has good wear resistance, self-lubrication and mechanical strength, can withstand a certain load and friction, can be used to manufacture a variety of transmission gears in packaging machinery, to ensure transmission accuracy and stability.
Chain: The chain made of POM material has a low coefficient of friction, smooth operation, and has good corrosion resistance and fatigue resistance, which is suitable for some packaging machinery with high transmission requirements.
Sliding block: POM's self-lubrication and low friction coefficient make it an ideal material for sliding blocks, which can slide smoothly on the guide rail to reduce wear and energy loss, and is often used in the conveying and positioning of packaging machinery.
CAM: POM material can process the CAM profile with high precision, and its good wear resistance and mechanical properties can ensure that the CAM maintains a stable shape and performance during long-term operation to achieve accurate motion control.
Bearings: POM bearings have good wear resistance and self-lubrication, which can replace metal bearings in some light-load and high-speed packaging machinery parts, reduce cost and noise, and have a certain corrosion resistance.
Roller: Used for the roller on the conveyor belt or other material transmission parts of the roller, POM material roller has good wear resistance and impact resistance, can ensure the smooth delivery of materials.

Medical Apparatus and Instruments
Gears and transmission components: In the transmission components of some medical devices, such as small pumps, compressors or other equipment requiring precise transmission, POM materials are often used to manufacture gears. Its high rigidity and wear resistance ensure that the gear maintains a precise transmission ratio during long-term use, reducing wear and noise, while good self-lubrication helps to reduce friction and improve transmission efficiency.
Sliders and guides: For devices with linear moving parts in medical devices, such as lifting or translating mechanisms for operating beds, dental treatment chairs, etc., POM materials can be used to manufacture sliders and guides. It provides a low coefficient of friction, making the movement more smooth and smooth, and has enough strength and wear resistance to withstand the weight of the equipment and frequent movement.
Bearings: The self-lubricity and wear resistance of POM materials make them ideal for the manufacture of some small bearings in medical devices. For example, in some wearable medical devices or small portable medical devices, POM bearings can effectively reduce friction and energy losses, extend the service life of the device, and its good chemical stability can also adapt to different working environments.
Device housing and handles: The housing or handles of some small medical devices will be made of POM material. POM has good formability and surface finish, and can be made into a shell and handle that looks beautiful and feels comfortable. At the same time, its strength and rigidity can protect the internal precision parts, and chemical corrosion resistance, easy to clean and disinfect, in line with the health requirements of medical devices.
Precision structural parts: Support parts for endoscopic rotating mechanisms and minimally invasive surgical instruments, with high dimensional stability, suitable for precision machining, reducing the weight advantage of metal substitution.

Automobile Industry
Throttle body components: POM materials can be used to manufacture some parts of the throttle body, such as the throttle shaft sleeve. It has good wear resistance and chemical corrosion resistance, and can work stably in the high temperature and complex chemical environment of the engine to ensure the normal operation of the throttle.
Cooling system parts: such as the impeller and shaft sleeve of the cooling fan, the water resistance and dimensional stability of POM material make it able to maintain good performance in the humid environment of the cooling system, not easy to deform, to ensure the normal work of the cooling fan and effective heat dissipation.
Wire harness connector: POM material has good insulation properties and mechanical strength, which can ensure the reliable connection of the wire harness connector, prevent electrical short circuit and loosening, and can withstand a certain external force.
Synchronous pulley: POM material made of synchronous pulley has high precision, low friction and good wear resistance, can be accurately matched with the synchronous belt to ensure the accuracy and stability of power transmission, widely used in automotive engine timing system and some auxiliary transmission systems.
Shifting fork: The shifting fork needs to be frequently shifted in the transmission, and the wear resistance and rigidity of POM material can meet its working requirements to ensure smooth and accurate shifting.

Special Equipment
Non-standard gears/worm gears :POM low friction coefficient reduces wear, self-lubricity avoids frequent maintenance, customized design to fit tight Spaces (such as transmission gears for elevator rail lubricators).
Shaped pulley/sprocket :POM wear resistance is better than ordinary engineering plastics, customized structure to reduce equipment load (such as roller coaster track guide pulley).
Precision positioning bracket/flange :POM molding accuracy is high (tolerance ±0.05mm), non-standard design to meet the needs of multi-dimensional positioning (such as three-dimensional adjustment bracket).
Non-standard seals/valves :POM has better oil and chemical resistance than nylon and is customized to achieve zero leakage (such as sealing parts for high-pressure hydraulic valves).
Wear-resistant cams/rollers :POM self-lubricity reduces contact fatigue and non-standard shape meets functional accuracy (e.g. cam-driven safety switch components).

Choose POM, Choose Reliable and Efficient
For the pursuit of high quality, high efficiency hardware precision parts processing enterprises, POM material is undoubtedly an ideal choice. It can not only meet a variety of stringent performance requirements, but also help enterprises reduce costs and improve production efficiency, so as to stand out in the fierce market competition. POM material has become the star material in the field of hardware precision parts processing with its excellent performance and wide application. It is believed that with the continuous development of technology, POM materials will play its unique advantages in more fields, and bring better products and solutions to all walks of life.
POM(polyformaldehyde)FAQ

What are the advantages of POM instead of metal?
Are POM materials suitable for manufacturing automotive engine parts?
What is the dimensional tolerance range after POM molding? Is it suitable for high-precision parts (such as precision gears, rail sliders)?
Can you provide customized tolerance requirements for POM non-standard customization?
Can POM parts be marked?
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