Steel shear K-4J

Steel shear K-4J


  • 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 (399mm)
  • 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-4J
Excavator weight (ton) 3.5 – 5.5
Weight (kg) 370
Max. jaw opening (mm) 399
Cutter lenght (mm) 260
Working pressure (MPa) 18
Oil flow (l/min) 30 – 70
Max Force (kN) 785


Steel Shear K-4J


Steel-shears.pdf (1.40 MB)

Schrottschere.pdf (1.40 MB)

Cisaille-a-fer.pdf (1.40 MB)