R type Air Chuck for EDM & Milling Machine

Model : AE-88R

Clamping and Std. Spring Pull Force : 100KGS

Maximum current: 120A

Without blowing holes for dirty off

Without Center Oiling Function

Repetition Accuracy : 2um 

Air Source: 6kg/square cm

Add air source spring pull force: 300 kgs


base plate 89mm x 89mm

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Pneumatic Chuck Diagram


  1. Surface : Stainless steel surface keeps its high accuracy, easy to maintain and has blowing function for clean.
  2. Positioning blocks : Positioning blocks are replacable and custom made is available for various of special workpieces machining.
  3. Connecting structure : Patented piston connecting structure allows bigger deviation.
  4. O-ring : High-quality seals, normal life expectancy is up to 5 years.
  5. Spring : High-quality imported spring. Life expectancy is more than 1.2 million times. 200 times / day = 16 years.
  6. Piston & Cylinder : All piston and cylinder are made of stainless steel. It won’t rust or stuck by moisture.
  • All pneumatic chucks are with boost pressure function and can withstand the clamping force up to 280kgs.
  • Link mechanism coated with special lubrication which won’t be deteriorated by moisture.



CGM EDM Chuck Installation instructions


  • Loose the old adjustment head.
  • Setup M106 adjustment head and fasten tightly.
    If it doesn't fit, please process the holes according to M106 graph.
  • Set up the chuck and fasten tightly.
    (The insulation pad should be in between of M106 and the chuck)
  • Use EDM negative line to make sure the chuck and machine wouldn't have short circuit.
  • Use ST-167R1 or ST-167R4 to adjust X and Y axis's flatness and parallelism.