Working Weight

5,650 lbs

2,565 kg

Recommended Carrier Weight

28 - 43 US tons

25.4 - 39 metric tons

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Impact Energy Class 5,500 ft lbs
Impact Frequency 400 - 500 bpm
Oil Flow 45 - 58 gpm 170 - 220 lpm
Operating Pressure 2,500 psi 172 bar
Tool Diameter 5.7 in 146 mm
Tool Working Length 25.5 in 650 mm


Hammer pre-delivery inspection    Hammer inspection 
Prior to all hammer deliveries, ensure the following items have been verified for each unit.
Identify the serial number of the hammer Hydraulic hammer serial number location
When ordering parts or performing repairs, always use the serial number to find information regarding your unit. The serial number is located on the hammer.
Safety decal & operation safety manual listing Safety listing
It is imperative that the safety decals, manual, and operator’s cards are kept and maintained in the cab of any carrier that is utilizing an NPK attachment.
Gas charge specifications H, E, GH, and PH series hammers Specs & instructions
Correct pressures & method
Hammer storage Storage of hydraulic hammers
Improper long term storage of hydraulic hammers has resulted in costly repairs from water corrosion damage.
Chisel tool resharpening Instructions & dimensions
Worn chisel tools can be resharpened by machining.
Correct grease for hydraulic hammers Approved brands & methods
Proper hammer maintenance depends on the regular greasing of the tool (chisel) with the correct grease.