Surface Finishing for PEEK (Polyether Ether Ketone)
PEEK surface finishing is limited compared to metals. The primary options are as-machined (most common), polished, and bead blasted. Coatings are rarely applied.
Recommended Machining Parameters
| Parameter | Value |
|---|---|
| Achievable Tolerances | ±0.02 mm (finished) |
| Surface Finish | Ra 0.4-3.2 μm |
| Cutting Speed | N/A |
| Feed Rate | N/A |
| Tooling Recommendations | N/A — post-machining polishing/blasting |
Expert Machining Tips
1
As-machined is the standard finish
2
Polish for reduced friction in bearing applications
3
Bead blast for uniform matte appearance
4
No plating or anodizing possible
Common Parts Made
Polished bearing surfaces
Bead-blasted housings
As-machined structural parts
Machining Challenges
- Limited finishing options
- Difficult to bond or coat
- Color limited to natural (beige/brown)