Precision Pneumatic Chucks for Metrology

With the PSF series, Koch Maschinenbau presents an exceptional pneumatic chuck with numerous innovative features especially for metrology.

  • Repeatability of 5µm, runout ≤20µm (chuck only, without rotary union or other additional adaptation).
  • Completely made of stainless steel or stainless materials
  • Low clamping forces for clamping without the risk of damaging the part
  • The clamping range can be preset with only one screw. This allows clamping without individual jaws.
  • Due to the reversible jaws, flexible clamping of shafts and in bores is possible.

PSF100 – Precision pneumatic chucks

Technical data

Clamping range*
i₁ 20–60
i₂ 40–80
i₃ 60-100
a₁ 1–40
a₂ 28–60
a₃ 48–80
a₄ 68–100
s 4,5
* The specified values refer to the range within which accuracy is guaranteed. Clamping larger workpieces may be possible under certain circumstances.
Technical Data
Operating medium Compressed air, unlubricated, according to ISO 8573-1
Operating pressure 6bar
Pneumatic connection M5
Weight 2kg
Ambient temperature +10 ... +50°C
Stroke of jaws radial Stroke of jaws radial 1,33mm, (≙2,66mm in diameter)/ position of jaws can be preset to 0.08mm
Material Stainless steel
Repeatability ≤5µm
Concentricity ≤20µm (Only chuck without accessoires)
3D CAD data

Rotary Union for Pneumatic Chuck

DDP100

With the DDP100 rotating union, compressed air can be transmitted to the PSF100 pneumatic chuck on 2 channels (opening / closing) during an endless rotary movement.

Unlike conventional rotating unions, the basic body of the DDP series is made of one piece and precisely ground. This ensures that the concentricity of the chuck is not unnecessarily affected. The rotating union is also especially smooth-running and thus well suited for the use on measuring machines.