Aggregates
Whether handling sand or gravel, Liebherr duty cycle machines deliver outstanding performance in a wide variety of applications, whether fitted with a dragline or heavy-duty grabs. Thanks to the excavator’s precise control and controlled rotation angle, the dragline can be extended flexibly and efficiently – exactly as far as the task requires.
5.5 million tonnes for the Hungarian motorway system
Grab operation
Thanks to their robust design and the high line pull of the main winches, duty cycle crawler cranes from Liebherr are ideal for jobs using heavy grabs.
During operation with material handling grabs, the stabilizing winch with constant tension and free-fall prevents swinging of the grab and ensures exact positioning of the material.
Sand quarrying
The HS 895 HD - duty cycle machine with two 350 kN winches - is handling 400 t of sand per hour. With a swing angle of approx. 180° it requires only 45 seconds per cycle. The digging depth has been increased to 40 m. The grab, with a filling capacity of 5 m³, can optimally penetrate very hard soils or interlocked material thanks to the specifically rounded shape and the grab teeth.
