These professional machines are generally used for taking out sand and rubble from lake, pond, river and sea. And also they are used for cleaning lake, and getting wet clay from dams.
These machines are manufactured in the light of superior German technology. The diving depth of the machines is ranging up to 100 meters according to the model type.
Bridge columns attached to the pontoon and the grab mounted below the crane are the main components of the system.
The working principle of the system;
The grab diving into water with open mouth reaches the bottom of water and closes by rope to get material. Then grab is pulled up with rope drum. Water filled in the grab is waited to flow through the slots and the grab releases the material in hopper. Coarse material is separated from hopper grid and the material passing through the grid is being pre-screened before being transferred to land by belt conveyors on pontoon.
TYPE TECHNIC Grab Capacity Grab Grab
Volume (At 20 m. Diving Diving
diving depth) Depth Drive
KAK 140 4.2 m3 180 m3/h 45 m 170 kW
KAK 180 5.5 m3 210 m3/h 50 m 240 kW
KAK 220 6.0 m3 320 m3/h 80 m 300 kW
KAK 240 6.8 m3 360 m3/h 80 m 300 kW
KAK 300 8.0 m3 410 m3/h 80 m 400 kW
KAK 360 10.0 m3 480 m3/h 100 m 520 kW
KAK 400 12.0 m3 530 m3/h 100 m 625 kW
Supplier: Dredger, cutter suction dredger, trailing suction hopper dredger, grab dredger, split hopper barge
