KHD – Hydraulic Grab for Diaphragm Wall

WIDTH EXTENSION SETS
With front guides and jaws the digging width can be extended from 600 mm to 1500 mm

LENGTH EXTENSION 
Sets with side guides and jaws the digging opening can be extended from 2200 to 2500 mm on the KHD 22, from 2500 mm to 3200 mm on the KHD 25 grab and from 2800 to 4000 mm on the KHD 28 grab.

ADDITIONAL WEIGHT
The additional modular weight increases the impact energy of the grab in hard soil and rock.

HYDRAULIC CYLINDERS
Two hydraulic cylinders and the jaws balancing guide ensure fast and effective excavation.

HYDRAULIC TURNING JOINT
The hydraulic turning joint allows precise alignment of the grab with the trench and operation at various angles which is useful on limited working sites. Complete rotation of the grab by +/- 180 degrees

TEETH
Wear sharp for high penetration and center rib for great strength. Hammerless tooth system featuring for simply preplacement and integrated locking device for higher safety.

CLEANERS AND CHISEL
The chisel is integrated into the main body of the grab and provides more efficient excavation. Large side ejectors ensure complete emptying of the excavation material.

Hydraulic Turning Joint

The hydraulic turning joint allows precise alignment of the grab with the trench and operation at various angles which is useful on limited working sites.

Complete rotation of the grab by +/- 180 degrees.

Steering Plates

All information on the orientation of the grab and the deviation from the correct trajectory are displayed on the control panel. The operator can correct the direction of excavation by activating the twelve optional steering plates. Due to the reinforced electric cable and the winder placed at the base of the boom, information and activation of steering plates are in real time. Each plate can assume two positions and the system is hydraulically operated. The grab must be equipped with the hydraulic turning joint.