Liebherr hydraulic crawler cranes

Defining new standards Flexibility, rentability and excellent performance are the distinguishing features of the hydraulic crawler cranes (HS series). On the international building machinery market Liebherr-Werk Nenzing GmbH, Austria, is the leading producer of modern hydraulic crawler cranes, lift cranes and carrier machines for special deep foundation applications.

Performance through leading technology The hydraulic crawler cranes achieve excellent performance due to leading technology developed inhouse. State-of-the-art Liebherr diesel engines, high performance winches with integrated brakes, the electronic control as well as the machine and process data recording system define new standards. Economy in all respects Efficient transport, easy assembly and high productivity combined with low operational costs are convincing features of Liebherr hydraulic crawler cranes. Flexibility in all respects With their modular concept Liebherr hydraulic crawler cranes...

Performance through leading technology High flexibility and excellent performance determine the application possibilities of Liebherr hydraulic crawler cranes. Whether used with dragline bucket, slurry wall grab or casing oscillator – the large dimensioned Liebherr diesel engines always guarantee maximum performance. Equipment such as vibrators or casing oscillators can be operated without additional power pack. Moreover, the powerful and maintenance-free free-fall winches are designed to fulfil highest demands and afford efficient and safe operatio

Unique selling points: • State-of-the-art electronic control system • Powerful Liebherr diesel engines • Large dimensioned and maintenance-free free-fall winches • Strong crawler and swing drive components • Extremely robust steel structure

Control system The core of the Liebherr hydraulic crawler cranes is the Litronic control system. Developed and manufactured by Liebherr, this comprehensive system encompasses all control and monitoring functions and is designed for extreme environmental conditions in tough assignments. All information, warnings and failure indications required for the current machine operation are clearly displayed on the monitor in the operator‘s cab and stored. Documentation of operating data enables optimum diagnosis as well as early detection and prevention of more serious defects. An electro-hydraulic proportional...

Liebherr hydraulic crawler cranes are equipped with powerful Liebherr diesel engines. Specially designed for dynamic applications in heavy-duty construction tasks, they are extremely reliable, durable and easy to service. The electronic control monitors and checks all machine data. Since engine electronics and crane control are optimally matched, the diesel engine can be directly inter-linked with the regulation of the hydraulic system, thus affording even more ease of operation. Possible failures are detected and localized immediately by the diagnostics system. All movements can be carried out...

Winches The maintenance-free Liebherr free-fall winches are installed as complete units. The new concept with integrated drive and multi-disc brakes allows increased drum width with the same outside dimensions, thereby increasing rope capacity on the first layer. This produces a longer rope life and reduced operational costs. The integrated free-fall brakes prove their worth especially in difficult free-fall operations with heavy loads. The main winches are driven via an axial piston displacement pump and a variable flow oil motor in closed circuit. This design allows precise work cycles for all...

For example, an “Interlock” control system for dragline operations allows power lowering of the grab line when raising the dragline bucket with the hoist rope which significantly reduces fuel consumption. The tagline winch is used as a constant tension or free-fall winch and enables efficient work with grab or demolition ball

Steel construction The hydraulic crawler cranes’ uppercarriage with its robust and torsion-resistant box design is mounted on a large undercarriage featuring wide track and long crawlers. This results in good ground pressure characteristics and stability. The external, large dimension teeth of the Liebherr swing drive guarantee optimum absorption of the high torque combined with minimum wear. Roller bearings in the swing drive ensure a superior, low-fit connection between upper and undercarriage. For special applications, e.g. rotary drilling or dragline application, an additional increase in...

A wide range of possible applications is the secret of the Liebherr hydraulic crawler cranes’ flexibility and lays the foundation for optimum utilization. Thanks to the modular design, which is typical for Liebherr, every crawler crane can be configured for its special job, leading to a virtually unlimited variety of applications. The hydraulic crawler cranes are suitable for material handling with grab or dragline bucket, demolition jobs, dynamic soil compaction, applications with slurry wall grab or casing oscillator.

Dragline operation The electro-hydraulic continuous proportional control of Liebherr hydraulic crawler cranes enables precise and simultaneous crane movements, which are indispensable for dragline applications. In addition, a second or third swing drive – if required – increases swing torque resulting in short swing cycles and fast loading cycles. The “Interlock” control system, which has been specially developed for dragline applications, allows power lowering of the grab line when raising the dragline bucket with the hoist rope, which saves energy and prolongs service life of the hoist rope....

Grab operation The robust design of Liebherr hydraulic crawler cranes combined with the high line pull of the main winches is ideal for working with heavy grabs. Hydrostatically driven hoist winches with variable flow hydraulic motors for optimum filling, precise lowering and emptying of the grab, automatically distribute the load on both winches and convert the installed engine power into maximum hoisting speed even when working with intermediate load. When working with material handling grabs, the constant tension winch with free-fall prevents swinging of the grab and ensures exact positioning...