Features

Whether it be for the smallest, most nimble of carriers to the largest of excavators, NPK maintains its commitment to incorporate the latest technological innovations into our entire hydraulic hammer product line. Utilizing state of the art computer modeling, NPK has designed a lighter weight hammer that delivers high impact energy and improves carrier balance.

• Gas powered piston creates more impact per blow than any hammer in the industry
• Eliminates bladder type accumulators that are prone to sudden failure & costly maintenance
• Only two moving parts means increased productivity and reliability
• Anti-blank firing (ABF) system prevents hammers from firing if the chisel is not loaded, minimizing wear. The result is safer, more efficient operations & longer hammer life.
• The round, rotating, tool retaining pin contributes to longer life and easy tool replacement
• Replaceable cylinder sleeves prevent wear to the main body and are an easy economical solution when rebuilding
• Separate ports for bushing lubrication and air for underwater applications

  • Rock breaking
  • Slag breaking
  • Reducing oversize material
  • Concrete breaking and recycling
  • Road construction
  • Sidewalk and curb construction
  • Commercial / selective demolition
  • C&D recycling / sorting
  • Underwater applications
  • Site excavation
  • Scaling and tunnel excavation
  • Trenching
And many more!

Full serviceability of the industry’s easiest, lowest cost, body-rebuild system
Hammers aren’t meant to have an easy life and occasionally need to be rebuilt. An NPK hammer body can be re-sleeved for approximately 1/3rd the cost of competing brands when the body becomes worn or damaged. A typical hammer body can cost as much as 70% the cost of a new hammer so when you buy an NPK hammer you can expect an excellent return on your investment.

The GH7 hydraulic hammer is compatible with backhoes and/or excavators in the 14to 21 ton range.

Durability and serviceability are two key advantages of NPK hydraulic hammers. When maintained and serviced regularly, NPK hammers can last over 20 years!

Hammer mounted automatic lubrication systems are an optional add-on for models ranging from PH-3 to GH-50. This type of auto-lube is ideal for hammers being used by multiple machines. For dedicated hammer carriers NPK offers a carrier mounted auto-lube system.

Vibration control that increases operator comfort to increase efficiency

Standard on all medium and large NPK hydraulic hammers, our shock-absorbing mounting bracket uses special heavy-duty rubber mounts to absorb shock, recoil, and impulse vibration. The unique one-piece design eliminates the need for mechanical springs and overly heavy mounting brackets. The net result is minimization of machine wear and improved operator comfort for greater reliability and productivity.

A grease port is provided for automatic and/or manual greasing of the demolition tool. This prevents damage or premature wear caused by a lack of grease.
All Models Backed by Our 3 Year Limited Warranty

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