To meet the growing demand for large telescopic crawler cranes, Sennebogen has introduced a new model with a maximum load capacity of 200 t, the 6203 E. It is ideal for heavy precast concrete assembly, bridge and infrastructure projects, as well as construction of wind turbines.
The 6203 E is powered by a 194-kW Stage V diesel engine, which can be operated with HVO if desired. The main and auxiliary winches are driven by high-pressure regulated variable displacement hydraulic motors, which give them a pulling force of 135 kN each and rope speeds of up to 115 m/min.
The six-section pin boom can be telescoped up to 56.4 m. This pin boom telescoping system is light and stable, resulting in excellent lifting capacities even with long boom lengths. An additional pin point at 90% extension on each telescopic section further increases the rigidity of the boom.
The 6203 demonstrates its capabilities with long boom lengths, but is extremely strong with short boom lengths and at angles of up to 4 degrees. This makes the crane particularly suitable for tasks on uneven construction sites or in pick-and-carry operation.
The boom length can be extended to up to 78 m with a hydraulically adjustable jib. To keep operation as simple as possible, the most effective boom configurations are preset with 16 so-called ‘extend modes’. Switching between the extend modes is possible and saves valuable time when adjusting the boom length.
The telescopic crawler undercarriage has a maximum track width of 6.0 m, which can be reduced to up to 3.5 m depending on the requirements of the construction site. The 1,000-mm double grouser track shoes offer maximum stability and minimise floor pressure. For more sensitive surfaces, durable polyamide plates can also be used as an option to prevent damage.
New machine control system
The 6203 E is equipped with the Maxcab large-capacity cab, which can be tilted by 20 degrees, thus offering the operator an optimum view of the load. As an option, this cab can be raised hydraulically to a viewing height of 5.70 m and tilted by 30 degrees. Cameras to the rear and to the right extend the driver’s field of vision to the entire safety and working area.
A highlight in terms of driver assistance is the new SLC (Sencon load control) machine control system. To ensure greater convenience for the operator during work, a separate control system with its own screen has been integrated into the cab in accordance with automotive standards. This new system is an addition to the existing Sencon (Sennebogen control system) and provides all valuable data on the lifting process on a large, clearly organised display in addition to the load moment limitation.
The 6203 E can travel with 100% of the specified load capacity on the hook. It can also slew the specified load capacities a full 360 degrees. The crane has a transport width of just 3 m without the crawler tracks and can be transported in seven units. Once on site, the 6203 E is able to unload itself from a low loader and assemble itself in just a few steps.
