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Construction Compactor, Construction Driver

NPK Construction Compactor and Construction Driver equipment is designed and built to meet today's demands for greater jobsite productivity, expanding and enhancing the versatility of your backhoe or excavator.

The leader in trench compaction technology, NPK delivers the industry's greatest impulse forces with overall superior performance through hydraulically operated rotating eccentric action. Greater vibration forces generate stress waves in granular or loose soil material, bringing the soil's air to the surface and packing the particles closer together. Greater impulse action works together with the carrier's downward forces to compact cohesive clay-type soils.

Do more work safely a boom's length away.

NPK's versatile Construction Compactor and Construction Driver can work productively virtually anywhere your excavator or backhoe boom can reach. In trenches, over and around pipe, to the top of piling and sheeting. Next to foundations and around obstructions. Even on steep slopes or rough terrain where conventional rollers and other machines either can't work or would be hazardous to try. In fact, NPK's Construction Compactor and Construction Driver can keep workers a full boom's length from the compaction or driving action, away from the danger of cave-ins or equipment contact.

Select the NPK Construction Compactor or Construction Driver that's right for your application.

NPK's full selection of Construction Compactor and Constructor Driver equipment gives you the exact power you need for your jobs and jobsite conditions. The right model for carriers ranging from the smallest mini-excavators and backhoe/loaders to the larger excavators.

Headlining the list of models is NPK's C-12C, largest and most powerful boom mounted plate Construction Compactor and Construction Driver available anywhere.

Now available on the new C-4C model Compactor / Driver is the optional narrow baseplate. This new 18 x 34 inch baseplate allows the operator to get into even more restricted spaces. New narrow baseplates are also available as a special order item on the C-6C, C-8C, C-10C and C-12C models.

NPK Construction Compactor and Construction Driver actually deliver on the promise of greater cost-efficiency and jobsite versatility - operating advantages that are absolutely required by today's contractors and budget-conscious municipalities. Utilizing your carrier's hydraulic system, you save on fuel as well as the need for other costly machines and equipment, using your versatile NPK Construction Compactor and Construction Driver for:

  • Compacting or driving anywhere a boom can go, and often where a man cannot
  • Driving pile, wood and aluminum sheering, fence posts, guardrail posts, rail and I-beams, piling and seawalls, etc.
  • Soil and aggregate compaction
  • Trench compaction, as deep as a bucket can dig
  • Steep slope compaction
  • Waste compaction at transfer stations, etc.
  • Breaking up frozen coal, salt and other material
  • Extracting piling and sheeting


Model Year
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50 in. (1,270 mm)
40 in. (1,015 mm)
3,530 - 3,615 lbs.
Carrier Weight: 30 - 50 tons


Hydraulic Flow
Oil Flow: 51 gpm (193 lpm) standard
Operating Pressure: 2,000 - 2,500 psi (138 - 172 bar)


Vertical Force
Impulse Force: 34,000 lbf (15,450 kgf)
Cycles per Minute: 2,200
Compaction Area
14.5 sq. ft. (1.3 m²)

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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.