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KHD – Hydraulic Grab for Diaphragm Wall

KHD22 | KHD25 | KHD28

The heavy weight and high clamping force of the hydraulic bucket, allows you to successfully build diaphragm walls even in difficult ground conditions. Casagrande offers a broad selection of diaphragm wall grabs for Casagrande base carrier or on hydraulic cranes.

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

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.

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

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

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

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.

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.

Casagrande  – Hydraulic Grab

Jaws opening2200 ÷ 2500 mm
Jaws width420 ÷ 800 mm
Weight9000 ÷ 16000 kg
Jaws opening2500 ÷ 3200 mm
Jaws width600 ÷ 1500 mm
Weight12000 ÷ 23000 kg
Jaws opening2800 ÷ 4000 mm
Jaws width600 ÷ 1500 mm
Weight16000 ÷ 30000 kg

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.

Technical Data - KHD

Jaws opening2200 ÷ 2500 mm86.6 ÷ 98.4 in
Jaws with420 ÷ 800 mm16.5 ÷ 31.5 in
Closing force1000 kN224,810 lbf
Weight9000 ÷ 16000 kg19,840 ÷ 35,280 lb
KHD 25
Jaws opening2500 ÷ 3200 mm98.4 ÷ 126 in
Jaws with600 ÷ 1500 mm23.6 ÷ 59 in
Closing force1600 kN359,700 lbf
Weight12000 ÷ 23000 kg26,455 ÷ 50,700 lb
KHD 28
Jaws opening2800 ÷ 4000 mm110.2 ÷ 157.5 in
Jaws with600 ÷ 1500 mm23.6 ÷ 59 in
Closing force2200 kN494,580 lbf
Weight16000 ÷ 30000 kg35.270 ÷ 66.140 lb


Product Catalogue

Download our presentation brochure to learn more about the equipment

Photo Gallery

Some images of our Hydraulic Grab in action

Request Information about Hydraulic Grab

To receive a quote from your local dealer, please fill out the form below. A dealer representative will follow up with you with the quote information you requested.

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Product Range Casagrande
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