25mm minimum slitting width knifeholder; a drastic reduction in machine downtime; high cutting quality even at high speeds and maximum safety for operators. These are the objectives pursued and achieved by the new Silver pneumatic knife holder. Discover the quality of Mario Cotta.

Technical features

Compatible blades:

  • 90 / 105x60mm

Available brackets:

  • Dovetail
  • Dovetail with pinion
  • Linear with 1 ball bearing carrier
  • Linear with 2 ball bearing carrier


  • Score Cut cartridge
  • Slide Cut cartridge
  • Hub 70mm
  • Lubricator

Three position knob

The knob allows an easy and quick setup of the Knife Holder thanks to the Pneumatic Half Approach.
Half Approach allows a quick and effective Knife Holder setup that avoids knife overlap onto bottom knife and a constant side load.

Penetration Nonius

The Graduated Dial allows a repeatable and precise regulation of the knife diameter in order to maintain the most effective overlap after changing or regrinding knives.

Cant Angle

The Knob allows an onboard cant angle regulation without any special tools. Cant angle could be adjusted from 0° to 1,5° in 0,25° steps.
This system guarantees Repeatable and Precise Adjustment on the entire slitting section.

Double Vertical Shaft

Two diameter 10mm Chromed Steel Shafts for knife descent that ensure absolute stability during slitting process. Increased stability allows an higher web speed without losing slitting quality.

Scrapers and protections

Scrapers and Protections
The Scrapers on the vertical shafts and the dust protection avoid dust penetration into the knife holder.
This will grant same performance and durability over a longer period.

360° Knife Guard

The full 360° Knife Guard increases the safety standards for operators during those production steps that present major operators’ risk.
Knife Guard does not compromise the minimum slitting width that remains 25mm!

Cartridge Carter

The Cartridge Guard increases operators’ safety during handling and Knife changing phases.
Lubrication fitting are available if demanded by the application.

Tilting Side approach

Tilting Side Approach disengages the movement unit from rotation unit resulting in a drastic reduction of the Run Out and a higher average life for the blades.
In addition, the blade remains centered on the knife holder, maintaining the minimum slitting width of 25 mm for both left and right hand Knife Holders.

Removable cartridge

The Removable Cartridge dramatically reduce the machine downtime during knives changes.
Moreover, it allows to Operators to change knives in a Safe and Controlled Environment, increasing Operators’ safety.
The Patented cartridge Dove Tail Rails permit clearance during Cartridge insertion – when needed – but once the lever is in closed position, the rail guarantees the perfect tightening.