POM Rod (Polyoxymethylene / Acetal) is a precision engineering plastic rod offering high mechanical strength, excellent dimensional stability, and low friction. Due to its outstanding machinability and uniform material behavior, it is widely used for CNC-machined gears, bushings, bearings, sliders, and moving components in industrial machinery.
What is POM Rod?
POM Rod (Polyoxymethylene / Acetal) is a semi-crystalline engineering plastic known for its
high mechanical strength, excellent dimensional stability, low coefficient of friction, and
outstanding machinability. These properties make POM one of the most widely used materials for
precision mechanical components.
POM Rod is particularly suitable for applications requiring tight tolerances, smooth motion,
and consistent performance in sliding and rotating parts.
Engineering advantages of POM Rod
- High mechanical strength: Suitable for load-bearing and pressure-exposed components.
- Excellent dimensional stability: Minimal deformation in tight-tolerance applications.
- Low friction behavior: Ideal for sliding and moving components.
- Excellent CNC machinability: Clean cutting, uniform chips, and high surface quality.
- Good wear resistance: Extended service life in dynamic applications.
- Low moisture absorption: Stable performance in humid environments.
- Good electrical insulation: Suitable for electrical and electronic components.
Typical applications of POM Rod
- Precision gears
- Bushings and bearings
- Rings and rotating components
- High-precision CNC-machined parts
- Sliders and low-friction elements
- Motion-transmission and linkage components
- Packaging machinery, automotive, and industrial equipment
Typical technical data of POM Rod
| Property | Typical value |
|---|---|
| Density | 1.39 – 1.41 g/cm³ |
| Tensile strength | 60 – 70 MPa |
| Hardness (Shore D) | 80 – 85 |
| Service temperature | -40°C to +120°C |
| Moisture absorption | Low |
| Wear resistance | Very good |
POM Rod compared with other engineering plastics
- Compared to Polyamide (PA): Higher dimensional stability and lower friction.
- Compared to UHMW-PE: Higher stiffness and better suitability for CNC machining.
- Compared to ABS: Superior mechanical strength and wear resistance for precision parts.
Frequently asked questions about POM Rod
Is POM Rod suitable for CNC machining?
Yes. POM is one of the preferred materials for high-precision CNC-machined components.
How does POM differ from polyamide?
POM offers better dimensional stability, lower friction, and improved performance in precision
and low-friction applications.
In which industries is POM Rod commonly used?
Industrial machinery, packaging, automotive, mechanical systems, and electrical applications.
For selecting the most suitable POM Rod for your application, contact the technical team at Tose’e Teflon.