The hammer grab is the most important tool in pile construction and it determines the drilling progress.
Double rope hammer grab with high closing force especially suitable for vibration free boring in semi hard soil conditions
Hydraulic Spherical Grab
The hydraulic turning device enables the grab to be turned ±100° to ensure a calibration of the borehole. The high deadweight in conjuntion with the high closing force ensures a high effiniency. The hydraulic spherical grab is used on jobs, where drilling has to be carried out free of vibrations an/or where partially cased or uncased drilled shafts are to be produced