Shaft and knives


Shaft The patented shaft can be fitted with a number of different cutting tools. Knife blocks are positioned firmly in the shaft utilizing a unique self centering, distortion- and tilting safe assembly. In the single shafted M&J FineShred 1500 and 3500 the shaft are positioned in a way that secures a correct feeding via the pusher. Along with the geometry of the 12-edged shaft, which minimizes the risk of materials winding up, this secures no heat development in the machine.

Knives are available in different designs depending on the demands from different applications. The positioning of the counter knives in relation to the rotating knives result in a “clean cut” minimizing dust emissions. Easy adjustment of the cutting clearance is secured by help of notches.


  • Homogenous output -Exact cutting, no friction, no pulling in and wrap around results in a homogenous output
  • Hydrostatic drive - Very reliable under heavy loads and shocks
  • Hydraulic pusher - interacting with shaft
  • Knife design - Different shapes for different applications
  • Multi edged shafts - No wrap around and self cooling effect
  • Cutting gap - Can be adjusted to a minimum allowing very exact cutting
  • Screen - Large screen area secure high output rate


Drive and screen

Drive - The hydraulic system consists of a variable pump with power control, an integrated feed pump and a hydraulic motor mounted on each shaft. All together a “state of the art” doubles hydrostatic system, providing the maximum output and the most reliable performance available.

Screen - Due to the precise cutting of the material the strain on the screens is minimal and the design can therefore be made in very thin materials. Typically screens can be made in 3 - 6 mm plates. As there is not pressure on the screen the open area can be optimized and secure a high output rate. Discharge of the granules can be executed either using screw conveyors or belt conveyors.

Patented knife

The multi-edged shaft is fitted with a patented knife system and is fed by a hydraulic pusher. The speed and the sensitivity of the pusher are interlinked with the function of the shaft. This ensures that material is not forced onto the shaft and a minimum of heat is generated. The hydraulic drive of the shaft guarantees an impact resistant and resonance free power  transmission.

All together a minimum of wear and energy consumption is secured.

Number of shaft pc. 1
Shaft length mm 2020
Shaft diameter mm 665
Electrical motors kW 2x132
Shaft speed rpm Up to 260
Number of knives pc. 108
Weight ton 22.0
Capacity per ton / hour
Output size PP Fibers Nylon Fibers HDPE foils Aluminium
10 mm  Up to 1.5 Up to 1.2 Up to 2.0 Up to 4.0
40 mm Up to 1.9 Up to 1.7 Up to 3.2 Up to 7.0
60 mm Up to 2.1 Up to 1.9 Up to 4.0 Up to 8.0

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