High-Precision Engineering Plastic for Low-Friction Parts
POM (Polyoxymethylene), also known as acetal or polyacetal, is a high-performance engineering thermoplastic known for its high stiffness, low friction, excellent wear resistance, and dimensional stability.
These properties make POM particularly suitable for precision mechanical components such as gears, bearings, bushings, rollers, fasteners, and moving assemblies.
Why Engineers Choose POM
Unlike general-purpose plastics primarily selected for appearance or cost, POM is often chosen for mechanical performance.
Its combination of stiffness, wear resistance, low friction, and dimensional stability makes it suitable for parts that move, slide, rotate, or maintain precise mechanical relationships.
Maidder provides custom POM plastic parts through CNC machining and injection molding, supporting projects from functional prototypes and engineering validation to repeat production.
POM has naturally low friction characteristics, making it well suited for moving components and sliding surfaces.
Typical parts include:
- Gears
- Bearings
- Bushings
- Rollers
- Sliding components
Excellent Wear Resistance
POM performs well in applications involving repeated mechanical movement and surface contact, helping reduce wear over extended service periods.
High Strength and Stiffness
Its mechanical strength and rigidity allow POM to handle structural loads while maintaining part geometry.
Excellent Dimensional Stability
Low moisture absorption and good dimensional stability help POM maintain accurate dimensions, making it a strong choice for precision components.
Good Creep Resistance
POM maintains its shape effectively under sustained mechanical loads, making it suitable for functional parts exposed to long-term stress.
Need Clear Plastic Parts but Unsure Which Process to Use?
Send us your 3D files, quantity, tolerance, and appearance requirements. Maidder can help evaluate whether CNC machining, injection molding, or another manufacturing process is better suited to your PMMA parts.
POM-C vs POM-H: What Is the Difference?
POM is generally available in two major material families: POM-C (copolymer) and POM-H (homopolymer).
Understanding the difference is important when selecting POM for precision components.
PMMA CNC Machining
CNC machining is a practical choice for PMMA prototypes, transparent components, and low-volume production parts.
It eliminates the need for injection mold tooling while providing good dimensional control and design flexibility.
- Functional prototypes
- Clear panels
- Equipment windows
- Transparent covers
- Light guides
- Display components
- Low-volume custom parts
Machining PMMA requires appropriate cutting parameters and tooling to reduce chipping, cracking, overheating, and poor edge quality.
Polishing can also be applied when improved transparency or cosmetic appearance is required.
PMMA CNC Machining
CNC machining is a practical choice for PMMA prototypes, transparent components, and low-volume production parts.
It eliminates the need for injection mold tooling while providing good dimensional control and design flexibility.
- Functional prototypes
- Clear panels
- Equipment windows
- Transparent covers
- Light guides
- Display components
- Low-volume custom parts
Machining PMMA requires appropriate cutting parameters and tooling to reduce chipping, cracking, overheating, and poor edge quality.
Polishing can also be applied when improved transparency or cosmetic appearance is required.