Pneumatic Knife Holders

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Double E is the exclusive supplier of Mario Cotta knife holders in North America. The company offers a variety of knife holders for shear, crush, and razor slitting applications. Double E engineers will happy to assist in recommending the proper knife holder to suit any material, speed, or tension requirements.

"Gold" Series Pneumatic Knife Holders

Type 2


  • “Gold” and “Platinum” knife holders share many features including:
  • Easy upgrade – direct replacement for common holders.
  • Removable and reversible blade cartridge allows cutting on both sides of the anvil with the same cartridge. Switch to new cartridge in seconds.
  • Precise setup control knob uses three simple settings for error-free setup.
  • Dual rod construction ensures rigidity to reduce vibration and improve cut quality.
  • Calibrated depth knob adjusts vertical stroke after sharpening of blades – just dial in the diameter.
  • Blade guard for safety.
  • Quick cant angle adjustment without tools.
  • “Gold” – Ideal for speeds up to 5,000 fpm and web material thickness up to 700 gsm.
"Platinum" Series Pneumatic Knife Holders

Type 3

  • All of the same features listed for "Gold" Series knife holders above.
  • “Platinum” – Ideal for speeds up to 9,000 fpm and web material thickness up to 2500 gsm.
"Tiny" Series Pneumatic Knife Holders

Type 1

  • Ideal for shear cutting of lightweight web material (film, lightweight paper, tissue, etc.).
  • Narrow slit widths down to one inch.
  • Perfect retrofit for outdated shaft-on-shaft shear cut systems.
  • Speeds up to 2000 fpm.
“PPS” Series Shear Cut and Crush Cut Knife Holders

  • Lower cost alternative for basic slitting applications.
  • Ideal for high speeds (up to 8000 fpm) and heavyweight materials.
  • Solid body construction minimizes vibration and yields exceptional cut quality.
  • Calibrated depth knob adjusts stroke after sharpening blades – just dial in the diameter.
“Rocky” Crush Cut Knife Holders

  • Crush cut force of 135 lbs. with narrow slit width capability (slits down to one inch).
  • Solid body, rigid construction to minimize vibration and improve cut quality.
  • Optional safety shroud.
  • Easy adjustment.
“Lisa” Score and Razor Cut Knife Holders

  • Narrow slit widths – down to just over a half inch.
  • Replaceable cartridge allows holder body to stay in place – no repositioning after quick blade change.
  • Hot cut knife holders also available (perfect for slitting nonwovens) - hot blade cuts and seals the edge.

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