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Description
Specs
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Description

A better design that combines efficiency, reliability and serviceability.

  • Excellent power-to-weight ratio
  • Unique gas-charged piston maximizes hammer efficiency
  • Simple, two-moving-parts design for reliability
  • Separate ports for the NPK AutoLube system and an air line for underwater use
  • Bottom tie rod nuts for easier serviceability (GH Models)
  • Quick-change tool system with single round retainer pin
  • Variety of tool configurations available
  • Replaceable cylinder sleeves for easy, economical rebuild
  • Tool bushings engineered for quick, easy replacement

Vibration control that increases operator comfort to increase efficiency. Standard on all medium and large NPK hammers, our shock-absorbing mounting bracket uses special heavy-duty rubber mounts to absorb shock, recoil, and impulse vibration. Their unique one-piece design eliminates the need for mechanical springs and overly heavy mounting brackets. The net result is that you minimize machine wear and improve operator comfort for greater reliability and productivity.

Simplified lubrication for greater reliability. 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.

Full serviceability of the industry's easiest, lowest cost, body-rebuild system. Hammers aren't meant to have an easy life. They occasionally need to be rebuilt. When the hammer body is involved, NPK's replaceable sleeve design can reduce your costs by a factor of five to ten.

Specs

Manufacturer
NPK
Model Year
2017
Model
GH30
MSRP
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Dimensions

Weight
Carrier Weight: 50 - 93 US tons
Operating Weight
13,500 lbs. (6,125 kg)
Tool Diameter
7.2 in. (184 mm)
Tool Length
32 in. (815 mm)

Engine

Frequency
310 - 390 bpm

Hydraulics

Hydraulic Flow
Oil Flow: 74 - 92 gpm (280 - 350 lpm)

Operational

Energy per Strike
15,000 ft. lbs.

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*Price, if shown, is Manufacturer's Suggested Retail Price (MSRP) and does not include government fees, taxes, dealer freight/preparation, dealer document preparation charges or any finance charges (if applicable). MSRP and/or final actual sales price will vary depending on options or accessories selected.