Steel shear K-3J

Steel shear K-3J


  • 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 (340mm).
  • 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-3J
Excavator weight (ton) 2.5 – 3.5
Weight (kg) 280
Max. jaw opening (mm) 340
Cutter lenght (mm) 220
Working pressure (MPa) 18
Oil flow (l/min) 30 – 60
Max Force (kN) 716


Steel Shear K-3J


Steel-shears.pdf (1.40 MB)

Schrottschere.pdf (1.40 MB)

Cisaille-a-fer.pdf (1.40 MB)


New demolition grab DG-25

The DG-25 fulfil the demand for a model between DG-20A and the DG-30A. Read More

Product info DG-30A and DG-40A

New design leads to increased durability After more than 10 years of successful Read More


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