Products

Cruncher U-31JXR

Cruncher U-31JXR

The crushing cruncher

Compared to NPK® G-series, the new U-cruncher shows important differences: one big center tooth. Because of the center tooth, all forces are concentrated to one point, which makes the U-cruncher act also as a crusher. Another advantage is the 360 degrees hydraulic rotation ( R ), allowing great manoeuvrability. Together with the center tooth and cutter the U-cruncher is an ideal tool for crushing and cutting walls, floors and light steel structures, such as apartments, reinforced walls, etc.

The cruncher is specifically designed to reduce oversized concrete pieces from ground level after they have been demolished. Simultaneously the reinforced steel will be separated from the concrete on site! This results in a significant reduction of transport costs and recycling becomes much more efficient.

High speed – extreme power

Like all NPK® crushers and crunchers, the U-model has the standard integrated booster system, a unique feature designed by NPK®. This booster system automatically activates whenever the jaws meet resistance. This pressure intensifier system has a relatively low oil flow and produces faster cycle times and more crushing strength. Additionally, other excavators functions remain uninfluenced. The integral booster allows a compact body design, reduces the total weight of the attachment and affords ease of maintenance.

Advantages

  • Standard integrated booster system that automatically activates when the jaws meet resistance.
  • Center tooth: more crushing power.
  • Hydraulic rotation 360° for precise positioning.
  • High productivity and extreme power.
  • No additional pressure reduction is required in the hydraulic system.

The crushing cruncher

Compared to NPK® G-series, the new U-cruncher shows important differences: one big center tooth. Because of the center tooth, all forces are concentrated to one point, which makes the U-cruncher act also as a crusher. Another advantage is the 360 degrees hydraulic rotation ( R ), allowing great manoeuvrability. Together with the center tooth and cutter the U-cruncher is an ideal tool for crushing and cutting walls, floors and light steel structures, such as apartments, reinforced walls, etc.

The cruncher is specifically designed to reduce oversized concrete pieces from ground level after they have been demolished. Simultaneously the reinforced steel will be separated from the concrete on site! This results in a significant reduction of transport costs and recycling becomes much more efficient.

High speed – extreme power

Like all NPK® crushers and crunchers, the U-model has the standard integrated booster system, a unique feature designed by NPK®. This booster system automatically activates whenever the jaws meet resistance. This pressure intensifier system has a relatively low oil flow and produces faster cycle times and more crushing strength. Additionally, other excavators functions remain uninfluenced. The integral booster allows a compact body design, reduces the total weight of the attachment and affords ease of maintenance.

Advantages

  • Standard integrated booster system that automatically activates when the jaws meet resistance.
  • Center tooth: more crushing power.
  • Hydraulic rotation 360° for precise positioning.
  • High productivity and extreme power.
  • No additional pressure reduction is required in the hydraulic system.

 

Specification

Model NPK U-31JXR
Excavator weight (ton) 29 – 48
Weight (kg) 3455
Max. jaw opening (mm) 980
Working pressure (MPa) 28
Oil flow (l/min) 100 – 250
Rotation pressure (MPa) 14
Rotation oil flow (l/min) 10 – 15
Max. force (A) (kN) 1150
Max. force (B) (kN) 1540

High Speed

Opening time (sec.) 1.6
Closing time (sec.) 2.9
Total cycle time (sec.) 4.5
Number of cycles (sec.) 13
Oil flow (l/min) 250

Drawing

Cruncher U-31J/JR

Attachments

Concrete_Cruncher.pdf (276.61 kB)

Betonpulverisierer.pdf (278.46 kB)

Crocs_a_béton.pdf (281.34 kB)

News

2016-05-11

NPK EUROPE, exhibitor in the EDA 2016 Annual Convention The exhibitor in the Read More

2016-04-01

            Meet you on Bauma 2016 Only just Read More

EXTREME POWER POWERBOOSTER

The NPK Powerbooster can be explained in 4 steps, as described above. As soon as the jaws meet resistance the extra speed is changed to extra power. Without concrete in the jaw, the booster creates more speed.

Read more about NPK technologies