The Knifeholder, ETP-KN, consists of a double-walled hardened steel sleeve filled with a pressure medium. The pressurising mechanism consists of a screw and piston with double sealing function.
When the pressure screw is tightened the double-walled sleeve expands against the shaft and creates a rigid joint. Dismantling or repositioning is done by loosening the screw.
Clamping alternative: On request the holders can be equipped with a nipple. In this case pressurising is done with a grease pump.


  • The hydraulic principle gives the following characteristics:
  • minimal axial/radial runout
  • longer lifetime for the knives
  • higher feed rates
  • possibility to use carbide knives
  • no damages to shafts
  • easy adjustments and repositioning along the shafts

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