HBR 502-2: small and lighter but powerful drilling rig for jet grouting
The Hütte HBR 502-2 is a hydraulic drilling rig for jet grouting. Designed with a stroke lenght beetween 3100 mm and 4100 mm, it can create deep foundation elements with a max. Jet Grouting Depht of 9,5 m / 10,5 m. The HBR 502-2 is one of the most compact and efficient rig for jet grouting and it has been manufactured also with increased power. Designed to be lighter and highly efficient, it is suited for difficult drilling conditions in confined and limited areas, which require particularly compact and mobile equipment.
Jet Grouting is applied when civil engineering works require soil improvement to build new structures or to restore the existing foundations. These techniques are employed in a wide range of cases such as underpinning of existing structures, diaphragm walls, structural and waterproof bottom plugs, tunnel consolidation, launch and arrival shafts for TBM and slope consolidations as well.
The HBR 502-2 has been engineered for jet grouting but it is also intended for many other drilling applications as it can be tailored to any costumer need or geological conditions.
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Technology and Performance
Please refer to the following chart for more technical details of the HBR 502-2
|Engine power||119 kW||160 HP|
|Width of crawler||1900 mm||6.2 ft|
|Stroke of rotary head||4100 / 7100 mm||13.5 / 23.2 ft|
|Extraction force||50 kN||11,240 lbf|
|Crowd force||50 kN||11,240 lbf|
|Working extraction speed||9 m/min||30 ft/min|
|Fast extraction speed||45 m/min||148 ft/min|
|Diameters||40 ÷ 159 mm||1.6 ÷ 6.2 in|
|Weight in working condition||11500 kg||25,353 lbs|
|Stroke||3100 | 4100 mm||10.17 | 12.45 ft|
|Max. Jet Grouting Depth||9500 | 10500 mm||31.17 | 34.45 ft|
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