Jaws of angular or round shape are available. The jaws, ropes and rope pulleys can quickly be replaced on site without any problem.
The teeth are replaceable. Light chiseling work is possible. All rope and guide pulleys have adequately dimensioned, maintenance-free bearings filled with oil.
The hydraulic diaphragm wall grab HSWG is equipped with a permanent measuring and control system which makes it possible primarily to recognize any deviation of the vertical excavating direction immediately and to indicate same to the control panel of the operator and secondarily to correct any deviation of the vertical position by means of a modification of the direction of the grab.
Thus, high accuracy is obtained also at deeper depths (more than 50 m) and the construction of diaphragm walls by means of grab excavation is thus perfected. The hydraulic diaphragm wall grab operates free of noise and vibration.