08/01/2016 Competence in Gravel Extraction: Kiesabbau Wiedemann Opts for Duty Cycle Crawler Cranes from Liebherr

Duty cycle crawler from Liebhher were used by the German company “Kiesabbau Wiedemann” for gravel extraction. Two of the duty cycle crawler cranes operated during the last year for the development of the Hungarian motorways.

Duty cycle crawler from Liebhher were used by the German company “Kiesabbau Wiedemann” for gravel extraction. Two of the duty cycle crawler cranes operated during the last year for the development of the Hungarian motorways.

Just recently, the German company “Kiesabbau Wiedemann” strengthened its position with four machines, namely three HS 8070 HD and one HS 895 HD. Two of the duty cycle crawler cranes operated in Hungary during the last year. Their task was the extraction of gravel material for the development of the Hungarian motorways. Despite the relatively large volume of the extraction, Kiesabbau Wiedemann decided against a larger machine and opted for two HS 8070 HD instead. Thanks to the performance of the two 70-tonne machines, the ground pressure could be kept low while lifting the dragline bucket.

For about one year, the duty cycle crawler crane worked twenty-four hours, seven days a week in order to meet the requirements for gravel. Every day about 16,000 tonnes of sand and gravel were extracted from depths of down to 12 metres. Thus, in the course of the year, it was possible to achieve approximately 5.5 million tonnes of material.

The two duty cycle crawler cranes also convinced through their high economic efficiency with a diesel consumption of only 24-26 litres per hour. “The low fuel consumption of the HS 8070 HD is exceptional. For gravel turnovers of 200 tonnes per hour it requires up to 30% less diesel than similar machines,” reports the obviously impressed Technical Managing Director, Florian Wiedemann.