5-Axis CNC Machining for PEEK (Polyether Ether Ketone)

5-axis PEEK machining is used for complex aerospace and medical components where the material's high temperature resistance and biocompatibility are combined with sophisticated geometries.

Recommended Machining Parameters

ParameterValue
Achievable Tolerances±0.02 mm
Surface FinishRa 0.8-3.2 μm
Cutting Speed100-250 m/min
Feed Rate0.05-0.15 mm/tooth
Tooling RecommendationsUncoated carbide with polished flutes. O-flute end mills. Sharp ball nose for contours.

Expert Machining Tips

1

Air cooling only — no oil contamination

2

Light finishing passes for dimensional accuracy

3

Control ambient temperature for best tolerances

4

Consider annealing between roughing and finishing

Common Parts Made

Spinal cage implant profiles

Semiconductor wafer carriers

Aerospace bearing housings

Complex electrical insulators

Machining Challenges

  • Very expensive material — mistakes are costly
  • Thermal expansion can affect accuracy
  • Dust extraction required

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