Steel shear K-7J

Steel shear K-7J


  • Only NPK® offers an exclusive integrated booster system that automatically activates when the jaws meet resistance.
  • No.1 Cutting Force for this class
  • Waved shape cutters which hardly release the material
  • Improved strength of arm and frame, unified frame and arm design.
  • Unique system that tightens frame and arms to prevent frame to open or deform.
  • This prevents jamming as cutting from thin steel plate to steel beam (e.g. H-steel).
  • Optimum opening angle that prevents object to move during operation.
  • Handling tip for material manipulating.
  • Low weight, long reach.
  • Large jaw opening (532mm)
  • Arm/Dipper stick mounted.
  • Piston rod and hoses fully protected inside the shears frame.
  • Slim-line design to increase visibility on the job.
  • Standard with 360° mechanical rotation or hydraulic rotation with rotator possible.
  • Maintenance friendly.
  • Low oil flow, ensures other functions of the excavator are not influenced.
  • Excellent stability even for high-lift demolition.
  • Reliable and efficient.
  • No additional pressure reduction is required in the hydraulic system.


Model K-7J
Excavator weight (ton) 6 – 9
Weight (kg) 680
Max. jaw opening (mm) 532
Cutter lenght (mm) 340
Working pressure (MPa) 21
Oil flow (l/min) 50 – 80
Max Force (kN) 1290



Steel-shears.pdf (1.40 MB)

Schrottschere.pdf (1.40 MB)

Cisaille-a-fer.pdf (1.40 MB)


Bauma 2019 Product Info

Bauma 2019 Product Info.pdf

Meet you on Bauma 2019

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The NPK Powerbooster can be explained in 4 steps, as described above. As soon as the jaws meet resistance the extra speed is changed to extra power. Without concrete in the jaw, the booster creates more speed.

Read more about NPK technologies