Working Weight

7,805 lb

3,540 kg

Recommended Carrier Weight

70,000 - 114,000 lb

32 - 52 metric tons

The GH-18 hydraulic hammer is compatible with excavators in the 32-52 metric ton range.  Visit the Attachment Wizard to see which hydraulic breakers are compatible with your carrier!




Visit and subscribe to NPK's YouTube channel for hydraulic hammer operation and service videos and videos of hydraulic breakers in action!  

Visit NPK's photo website for searchable hydraulic hammer photo galleries!

Visit the Hydraulic Hammer Publications page for sales brochures, operators manuals, and service bulletins.  If you require a service manual or would like a hard copy of any other manual, please contact the Sales Department at 440-232-7900 or email to


Visita y suscríbete al canal de YouTube de NPK para videos de instrucciones de servicio para martillos hidráulicos.

NPK offers a wide variety of accessories for hydraulic hammers:

  • Tools
  • Auto Lube Systems
  • Dust Suppression Kits
  • Grease
  • Quick Disconnects
  • Underwater Kits


For more about all types of hammer accessories, visit the Hammer Accessories Page.

Visit the Hammer Accessory Publications page for related 
sales brochures, operators manuals and sales bulletins.


Find a Dealer

Impact Energy Class 12,000 ft lb
Impact Frequency 300 - 400 bpm
Oil Flow 58 - 77 gpm 220 - 290 lpm
Operating Pressure 2,500 psi 172 bar
Tool Diameter 6.5 in 165 mm
Tool Working Length 29.1 in 740 mm