NORDPRÄZISION
Werkzeugfabrik GmbH

Machine Knives for Industry

Machine knives are precision cutting tools used in industrial machines for cutting, slitting, shearing, trimming, perforating, shredding and separating a wide range of materials. They are used throughout the manufacturing and processing industries wherever reliable and precise cutting performance is required.
We manufacture machine knives for applications involving paper, cardboard, plastics, films, textiles, leather, rubber, wood, food products and metals. Machine knives are also widely used in recycling, waste processing, shredding and granulation, where high wear resistance and long service life are particularly important.
Depending on the machine and application, machine knives can be manufactured as straight knives, circular knives, shear knives, serrated knives, perforating knives or special knife geometries. Knife assemblies and knife segments can consist of several individual machine knives working together.
Materials for Machine Knives
The choice of material is an important factor in the performance and service life of a machine knife. 

Depending on the application, we manufacture machine knives from:

  • Carbon steel
  • Tool steel
  • High-alloy tool steel
  • Stainless steel
  • High-speed steel (HSS)
  • HSS PM
  • Carbide



The appropriate material depends on the material being cut, the cutting process, operating conditions, required hardness and wear resistance, and the desired service life.
Machine Knife Designs and Cutting Geometries
Machine knives are available in many different designs and cutting geometries. The appropriate geometry depends on the machine, material and cutting process.

  • Straight machine knives
  • Circular knives
  • Round knives
  • Shear knives
  • Serrated and toothed knives
  • Perforating knives
  • Slitting knives
  • Special-purpose machine knives



Cutting angle, edge geometry, knife thickness and tolerances can be adapted to the specific application.
Machine Knives for Different Industries
Our machine knives can be used in a wide range of industrial applications, including:

  • Packaging production
  • Paper and cardboard processing
  • Plastic and film processing
  • Textile processing
  • Leather processing
  • Wood processing
  • Metal processing
  • Food processing
  • Recycling and waste processing
  • Shredding and granulation



For demanding applications such as recycling and shredding, the knife material and cutting geometry must be selected to withstand high mechanical loads and abrasive materials.
Custom Machine Knives
Industrial machines often require knives with specific dimensions, cutting angles, hole patterns or mounting configurations. We therefore manufacture custom machine knives according to customer drawings, specifications or samples.
This allows us to produce individual knife geometries and dimensions to match the respective machine and cutting application.
Grinding and Regrinding of Machine Knives
Precision grinding is essential for achieving the required dimensions and cutting-edge geometry. A precisely ground cutting edge supports consistent cutting performance and can help increase knife service life.
Many machine knives can also be reground and reused. Professional regrinding restores the cutting edge and can reduce tool costs and downtime compared with replacing the complete knife.
If you require machine knives for industrial applications, send us your drawing, sample or technical specifications. We manufacture custom machine knives for a wide range of materials, machines and cutting processes.




   





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