Demolition Shears

Demolition Shears | Steel Shears

NPK Demolition Shears are engineered and manufactured to world class standards to deliver optimum productivity on the most demanding demolition jobsites and steel processing operations. 

The unique construction of the arm pin prevents distortion of the main frame and diminished jaw deflection, this in turn maintains blade tolerances preventing jamming of material between the cutter blade.

  • Waved shape cutting blades for superior grip and control of material
  • Unique design that tightens frame and arms to prevent distortion
  • Full 360° power rotation
  • Low weight with large jaw opening
  • Slim line design to increase visibility

NEW “EH” Models

This new adaptation incorporates the rotation circuit, eliminating the need for a second hydraulic circuit dedicated to rotation to be installed on the carrier.  This means “EH” shears can now very easily be switched among multiple carriers – great for rentals!

Using just the primary auxiliary circuit on the machine, the valve switches flow from jaw open/close to rotation left/right.  After mounting the unit to the carrier, all that needs to be done is to run a power cable down the boom/stick and tie it into 12V on the machine.

Additionally, top mounting brackets used to attach “EH” shears to your carrier are also compatible with existing PH hammer tops.

NPK dedicated mounting kits enable demolition shears to be mounted as:

  • backhoe attachments
  • mini excavator attachments
  • skid steer attachments

See the Attachment Wizard to determine which hydraulic attachments are compatible with your carrier.

Potential applications include:

  • C&D recycling and/or sorting
  • Cutting rebar, pipes, beams, and other C&D scrap
  • Commercial demolition projects
  • Many more




Visit and subscribe to NPK's YouTube channel for videos of demolition shears in action!  

Visit NPK's photo website for searchable demolition shear photo galleries!

Visit the Demolition Shear Publications page for sales brochures and instruction manuals.


Visit each demolition shear model page below for additional images and specifications. If you would like a hard copy of the instruction manual, please contact the Sales department at 440-232-7900 or by email at

Image Model Working Weight Recommended Carrier Weight Range (3rd member)
K-3J 815 lbs 5,500 - 9,000 lbs
K-3JR 890 lbs 8,000 - 15,500 lbs
K-3JREH 1090 lbs 9,000 - 15,500 lbs
K-4J 975 lbs 8,000 - 12,000 lbs
K-4JR 1050 lbs 9,000 - 20,000 lbs
K-4JREH 1250 lbs 10,000 - 20,000 lbs
K-7J 1700 lbs 13,000 - 20,000 lbs
K-7JR 1780 lbs 13,000 - 31,000 lbs
K-7JREH 1820 lbs 13,000 - 31,000 lbs