1. Excellent power-to-weight ratio
2. Unique gas-charged piston maximizes hydraulic hammer efficiency
3. Simple, two-moving-parts design for reliability
4. Separate ports for the NPK Autolube (auto greasing) system and an airline for underwater use
5. Quick-change tool system with single round retainer pin
6. Variety of tool configurations available
7. Replaceable cylinder sleeves for easy, economical rebuild
8. Anti-blank fire feature virtually eliminates dry firing for long hydraulic breaker life

• 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!

The PH4 hydraulic hammer is compatible with skid steers, backhoes and/or mini excavators in the 6 to 9 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 beingused by multiple machines. For dedicated hammer carriers NPK offers a carrier mounted auto-lube system.

PH Series hammers are available with either the standard hammer bracket or an optional enclosed bracket. This enclosed bracket design decreases operating noise and can be readily equipped with an optional water-ready dust suppression kit.

NPK’s enclosed hammer bracket option decreases operating noise beyond standard low noise brackets. Additionally, the enclosed hammer bracket is much narrower than our standard hammer bracket and may be preferred in some trenching applications

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.