POM Injection Molding Service
Durable, precise, and wear-resistant — We provide POM injection molding solution deliver high-performance parts for demanding applications.
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Erye Offer POM Injection Molding Service to Specific to Your Needs!
POM (Polyoxymethylene), also known as acetal, is valued for its high stiffness, low friction, and excellent dimensional stability, making it ideal for precision parts in demanding applications. Our injection molding expertise ensures that POM components achieve superior mechanical performance, tight tolerances, and a flawless finish.
Our POM Injection Molding Capabilities:- High-precision molding for complex geometries and tight tolerances
- Material selection guidance for homopolymer and copolymer POM to match application needs
- Material selection guidance for homopolymer and copolymer POM to match application needs
- Surface finish control for low-friction, wear-resistant components
- Reinforced POM molding with additives like glass fiber for enhanced strength
- Custom mold design to ensure consistency and durability in production
- Secondary processing including machining, ultrasonic welding, and assembly
POM Injection Molding Design Guide
POM’s high stiffness, low friction, and dimensional stability make it ideal for precision components, but its shrinkage and potential for stress cracking require careful design considerations.
| Item | Description |
|---|---|
| Wall Thickness | Maintain uniform wall thickness between 0.8mm and 3.0mm to reduce differential shrinkage and warpage. Avoid abrupt thickness transitions. |
| Draft Angles | Ensure 0.5°–2° draft to facilitate part ejection without surface defects, especially for textured surfaces. |
| Fillets and radii | Use a minimum radius of 0.5mm at internal corners to prevent stress concentration and potential cracking. |
| Rib design | Ribs should be 40–60% of the adjacent wall thickness to prevent sink marks while adding strength. |
| Venting | Provide adequate venting (vent depth 0.02–0.05mm) to prevent gas entrapment, which can cause burn marks or short shots. |
| Shrinkage allowance | Consider POM’s shrinkage (1.8%–2.5%) when designing mating parts, particularly for press-fit or snap-fit applications. |
| Bosses and fasteners | Design bosses with an outer diameter 2–3 times the screw diameter and reinforce with gussets to avoid cracking under load. |
| Snap-fit design | For snap-fit features, maintain a deflection strain below 5% to prevent permanent deformation or fracture. |
| Tolerance control | Due to POM’s thermal expansion, set realistic tolerances (±0.05mm–±0.10mm) based on the part size and function. |
Advantages of POM Injection Molding
POM Injection Molding Product Applications
Automotive
- Gear mechanisms
- Fuel system components
- Door locks and latches
- Steering column bearings
Electronics & Electrical
- Connectors and switch housings
- Insulating components
- Cable ties and wire management clips
- Printer and scanner gears
Medical Device
- Inhaler components
- Surgical instrument handles
- Drug delivery system parts
- Prosthetic joint components
Industrial Components
- Precision gears and pulleys
- Conveyor system rollers
- Bearings and bushings
- Fasteners and clips
