Liebherr’s CBO space-saver
Liebherr has a new take on an established crane: the CBO (Compact Board Offshore) series, with its A-frame base and lattice boom, offers inherent stability paired with a very neat footprint.
Being so compact “the new series fulfils the requirements for maintenance and supply work wherever operating radius and space on deck is restricted,” said Liebherr. The company has worked to keep the tail swing radius down to less than 4m, and as a result the CBO range can fit in the most compact of spaces “including offshore platforms, substations or close to the legs of jackups”, Oliver Bretag of Liebherr told MJ.
Usefully, the range has been developed to yield several different configurations and so, for example, owners can choose between a variety of boom lengths (from 42m to 63m) and lifting capacities – between 50t to 100t.
The cranes have a slew bearing and rope luffing system supported by electro-hydraulic drives: usefully, the winches have been placed on the boom near the pivot point to prevent any blocking of movement added Bretag. In fact, the focus on efficiency and space-saving can be seen repeated throughout the various elements of the design: for example, the machinery compartment is above the access and maintenance area. This layout also makes room for the centrally positioned cabin, which allows the operator an unobstructed view.
Liebherr has also applied a new maintenance concept; customers can purchase a second fully equipped machinery house so the installation can be swapped over in its entirety, explained Bretag. As retaining as many operational days as possible is high on the agenda, it’s an idea that might well catch on as it reduces downtime, there’s no waiting around for spare parts and moreover, it minimises maintenance schedules.
To fulfil safety requirements, Bretag explained the CBO cranes are available with a range of tailoring options for hazardous areas. Depending on specific customer requests, Liebherr is able to protect either certain parts (such as the lattice boom) or the complete crane as a whole, using components selected for suitability on applications within hazardous areas.
According to Liebherr, the new range is a response to “the latest trends and customer’s feedback”. It added that “the series supplements the advantages of the existing product portfolio and widens the field of applications”.
By Stevie Knight
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