At this year’s bauma, Sennebogen expanded its range of HD duty cycle cranes with the launch of a new model with a load capacity of 220 tonne and a maximum boom length of 74.7 metres in lifting mode: The Sennebogen 6220 E. The new duty cycle crane impresses with its performance, flexibility and safety and is designed for a wide range of applications.
Sennebogen can look back on more than 73 years of experience in the development and construction of duty cycle cranes. With the new 220 tonner 6220 E, SENNEBOGEN is now expanding its series in the upper size class, closing the gap between the 140 tonner 6140 E and the 300 tonner 6300 E.
Wide range of applications thanks
to modular configuration
The new 220t duty cycle crane impresses with its enormous versatility and is designed for a wide range of applications in the heavy-duty sector, as it can be customized for a wide variety of applications. Depending on requirements, customers can choose between a 563 kW or the larger 708 kW engine with emissions stage V. Various attachments and ballast variations are also available, depending on whether the machine is to be used as a crane or excavator. The duty cycle crane demonstrates its strengths particularly in the offshore sector and in dredging, for example by working particularly stably and reliably under the toughest conditions and even at inclinations of up to 4 degrees with the higher engine power and more ballast.
In addition, the machine can be equipped with additional hydraulics for various attachments, and there are several winch options available – from 30t or 35t free-fall winches, to configurations with dual 20t winches, as well as other options suited for a wide range of applications. The duty cycle crane can also be equipped with an extra-powerful 6t tagline winch with 60 kilo-newton (kN) tractive force for the necessary precision during grab work. With a fairlead and dragline bucket, on the other hand, the machine is used for extraction work. In civil engineering, the robust boom design and the high load capacities make it easy to operate a hydraulic breaker, leader, vibrator or even a diaphragm wall grab. A pipework connection can also be configured, as can use in steelworks with a drop ball or demolition work with a wrecking ball.
High load capacities and tensile forces
The 6220 E demonstrates its load capacity capabilities in both grab and hoist mode and offers impressive values across the entire working range. Thanks to the increased rope capacity on the first layer, the duty cycle crane can also work particularly deep with the maximum tensile force of its free-fall winches, i.e. 350kN. This also greatly reduces rope wear. The use of aramid guy ropes instead of steel ropes on the main boom has resulted in considerable weight savings. The machine also has two slewing gears as standard, which guarantee an enormously high slewing torque of 585kN.
Focus on the driver: safety and comfort
When developing the 220t duty cycle crane, the focus was also placed on the operator and daily work with the machine. Like all Sennebogen duty cycle crawler cranes, the 6220 E is equipped with the ergonomically optimised large Maxcab, which offers proven all-round comfort and can be tilted by 20 degrees as standard, so that the operator always has an optimum view of the working area. As an option, the duty cycle crane can also be equipped with a 2.0m hydraulically elevating cab – a feature that is particularly useful in dredging applications.
The safety concept has also been further optimised. This includes equipping the boom with a height safety device as standard. To ensure safe access to all areas of the machine, the optional railings and walkways on the upper carriage, as well as the access steps themselves, have also been revised. Additional step gratings are also available as an option. The assembly of the undercarriages and changing the reeving can also be carried out conveniently and safely by remote control.
Machine control with SENCON
Load Control
The new machine control system SLC-SENCON Load Control is integrated into the machine is another highlight in terms of user-friendliness. The SLC is a separate control system developed according to automotive standards, which simplifies the machine operation thanks to its intuitive and clear structure. The new system complements the existing SENCON (Sennebogen Control System) and displays all important data on the lifting process on a separate touch display in addition to the load moment limitation. There is also a ground pressure display calculated in real time. Diagnostic data on the machine and engine can still be found in the SENCON as usual.
Stable Starlifter undercarriage and self -assembly system
The Starlifter undercarriage of the 6220 E has a track width of 6400 millimetres and a running gear length of 9280mm and is equipped with 1000mm flat track shoes as standard, which gives it particular stability. For even greater stability, the undercarriage can be fitted with an additional ballast. The crawler tracks can be dismantled for transportation, giving the crane a transport weight of about 65t. When it arrives at the next job site, they can be easily reassembled using the self-assembly system with radio remote control. The 6220 E is equipped with a mechanical two-rope grab for underwater or slewing applications.