POM Injection Molding

POM injection molding is widely used to manufacture precision engineering plastic components with excellent strength, wear resistance, and dimensional stability. POM, also known as acetal or polyoxymethylene, is a high-performance engineering plastic commonly used to replace metal in many mechanical applications.

Because of its low friction coefficient and excellent fatigue resistance, POM injection molded parts are widely used in gears, bushings, sliders, and other precision mechanical components.

At HuaShuo, we provide professional custom POM injection molding services for global B2B customers. Our team supports precision mold design, engineering material selection, and stable mass production of acetal plastic parts used in automotive, electronics, and industrial equipment.

ISO 9001:2015, CE
T1 sample as fast as 2 weeks
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What Is POM Injection Molding?

POM injection molding is a manufacturing process where polyoxymethylene plastic material is melted and injected into a mold cavity to form precise engineering plastic parts. Because POM offers excellent stiffness, low friction, and high wear resistance, it is widely used for mechanical components that require durability and dimensional accuracy.

Compared with many general-purpose plastics, acetal plastic provides higher strength and better mechanical stability. This makes POM injection molding an ideal solution for producing gears, bearings, sliders, and other precision structural components.

Types of POM Materials

Homopolymer POM

higher stiffness and strength
excellent fatigue resistance
good mechanical performance

Typical products

precision gears
mechanical components
structural parts

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Copolymer POM

better chemical resistance
improved thermal stability
lower centerline porosity

Typical products

pump components
industrial machine parts
fluid system parts

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Reinforced POM

glass fiber reinforced
higher structural strength
improved rigidity

Typical products

load-bearing components
structural mechanical parts

Key Properties of POM Plastic

High Mechanical Strength

POM provides excellent strength and rigidity for structural plastic components.

Low Friction

The material has a naturally low friction coefficient, making it ideal for moving mechanical parts.

Excellent Wear Resistance

POM performs well in applications involving repeated sliding or rotation.

Good Dimensional Stability

POM maintains accurate dimensions even under mechanical stress.

Chemical Resistance

The material resists many oils, fuels, and solvents.

Fatigue Resistance

POM can withstand repeated stress cycles without failure.

Processing Challenges in POM Injection Molding

High Shrinkage

POM has relatively high shrinkage, which requires careful mold design and tolerance control.

Thermal Degradation Sensitivity

Improper temperature control can lead to material degradation during processing.

Mold Venting Requirements

Proper venting is required to avoid gas marks or burn marks on molded parts.

Limited UV Resistance

POM is not ideal for long-term outdoor exposure without stabilization additives.

With our extensive experience, HuaShuo will help you avoid the issues you’re concerned about and provide valuable insights into the injection molding process.

Industries and Typical POM Injection Molded Parts

Thanks to its high strength and high wear resistance, POM is widely used in a variety of fields.

Automotive Industry

gears
bushings
fuel system components

Industrial Equipment

rollers
bearings
mechanical sliders

Consumer Products

appliance gears
structural plastic parts

Electronics Industry

connector housings
switch components

HuaShuo POM Injection Molding Capabilities

HuaShuo has extensive experience and a professional engineering team, enabling us to provide you with high-quality injection-molded products.

Precision Mold Design

We design molds optimized for high-precision POM plastic parts.

Tight Tolerance Manufacturing

Our injection molding process ensures consistent dimensional accuracy.

Wear-Resistant Part Production

We specialize in producing durable mechanical components with POM material.

Engineering Material Selection

Our team helps select the most suitable POM grade for each application.

Surface Finishing Options

Secondary processes such as polishing or machining are available when required.

OEM COEM Custom Manufacturing

HuaShuo supports custom POM injection molded parts based on drawings or samples.

FAQS

Everything You Need to Know About Our PMMA Injection Molding

What is POM plastic used for?

POM plastic is commonly used for gears, bearings, sliders, and precision mechanical components.

Is acetal good for injection molding?

Yes. Acetal plastic offers excellent mechanical properties and dimensional stability, making it ideal for injection molding.

What is the difference between POM-H and POM-C?

POM-H provides higher strength and stiffness, while POM-C offers better chemical resistance and processing stability.

Why is POM used for gears?

POM has low friction and excellent wear resistance, making it ideal for gear applications.

Is POM better than nylon for mechanical parts?

In many applications, POM provides better dimensional stability and lower moisture absorption than nylon.

Request a Quote

From mold design to mass production, we offer end-to-end solutions.

Tell us about your application, materials, and volume requirements. Our team will recommend the right process and deliver a tailored manufacturing solution.