Spherical Hammer Grab

The hydraulic spherical grab is used on jobs where drilling has to be carried out free of vibrations or where partially cased or uncased drilled shafts are to be produced. The large dead weight in conjunction with the high closing force ensures maximum efficiency. The hydraulic turning device enables the grab to be turned ± 100 degrees to ensure calibration of the borehole.

To recognize and correct any deviation of the vertical excavation direction, all hydraulic spherical grabs are equipped with a two-axis inclination sensor. The inclination sensor values are monitored inside the operator’s cabin. On uncased drilled shafts, the grab type HLKG CD’s jaw dimensions can be adapted to the respective shaft diameter. (Note form to download)