POM
Dimensionally stable, low friction and easy to machine — until you try to bond it to anything.
One of the few plastics that cuts cleanly and holds a tight tolerance. It does not need the anneal step that nylon does.
Quote a POM partWhat we hold and what we can hold
Figures below are what our shops achieve on prototype quantities. A production order may justify tighter — or looser — tolerances, and that is a conversation, not a default.
| Property | Value |
|---|---|
| Typical use | Bearings, rollers, precision slots, gears, bushings |
| Machinability | Excellent |
| Achievable tolerance | ±0.05 mm achievable, ±0.10 mm typical |
| Typical lead time | 3–6 working days |
| Common grades | POM-C (copolymer) · POM-H (homopolymer) |
| Recommended finishes | Deburring · Bead blasting |
| Suitable processes | 3-axis milling · CNC turning · Swiss turning |
What engineers ask about POM
These are the questions that come up on almost every POM drawing. If your question is not here, send it with the drawing and we will answer it in the quote.
Why will glue not stick to my POM part?
POM has almost no surface energy and will not bond to standard adhesives. It has to be mechanically retained, welded, or bonded with a specific primer and adhesive system — we will flag this on the drawing review.
Should I use POM or nylon?
POM if the part needs low friction, dimensional stability or wear resistance. Nylon if it needs impact toughness, a lower price, or has to be bonded.
Where this material fits
Surface finishes for POM
When not to use POM
We would rather tell you on day one than ship you a part that was never the right answer. If one of these applies to your project, say so in the enquiry.
- Parts that have to be bonded to another part
- High-temperature service above the polymer limit
- Applications where impact toughness matters more than dimensional stability