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17 February 2013, 00:00
SENNEBOGEN presents the 655 HD duty cycle crawler crane: a new machine for universal deployment in a wide range of heavy-duty tasks on construction sites and in the extractive industry. Whether it is used with a dragline bucket or in foundation construction, the strengths of this new 55-ton machine are clear to see. At Meier Bau, in Pocking in Lower Bavaria, the machine was able to put its capacity to the test for the first time.
The company, Meier Bau, in Lower Bavaria can look back over a 120-year success story. Today the company is a competent service provider in the areas of civil engineering and underground engineering, and with its own gravel quarries, it services many construction sites and customers in Southern Germany and adjacent countries. As one of the first customers, Meier Bau uses the new SENNEBOGEN 655 HD in dragline operation in the gravel quarries. Equipped with a 3.5 cubic yard Hendrix dragline bucket, currently the machine scoops up tons of gravel in the Schlupfing gravel quarry.
The responsible parties at Meier Bau do not regret the decision to use the SENNEBOGEN duty cycle crawler crane for this application. The machine is particularly well suited for dynamic dragline bucket use, thanks to the robust design and the two 16 t winches. The two winches are driven by high-pressure regulated variable displacement hydraulic motors and ensure efficient transmission of force. Extremely wide, robust pulleys ensure reliable rope guidance and can withstand even maximum loads. The 655 HD is particularly impressive when used with a dragline bucket, which in addition to providing increased torque, also significantly accelerates the cycle of emptying the bucket. The newly-designed fairlead reduces lateral deflection of the luffing rope, thanks to a pulley rope guide in the base of the boom.
The operator is supported in his everyday work by a special, continuously-variable free fall brake that also protects the machine. User-friendly technology, state-of-the-art engines and an optimized control system save fuel and ensure that the 655 HD is not only easy to operate, but environmentally-friendly as well.
At Meier Bau, operator Volker Unertl, who now knows the machine inside and out, particularly praises the powerful engine and the intuitive operation of the 655 HD, "The SENNEBOGEN 655 HD is made for dragline bucket operation. Thanks to the powerful slewing gear extremely short cycle times are possible, and in this regard the machine requires significantly less than comparable machines. For me as operator the ergonomic maXcab comfort cab offers a good overview and makes the 655 HD a pleasant workplace."
Flexible implementation - from mining to special underground engineering
The machine also comes with a rugged double pin boom head as standard, for multiple reeving and hence easy accommodation of large lifting loads – regardless of whether it is fitted with a diaphragm wall grab, leads or piping machinery. If desired a single pin boom head can alternatively be used – perfect for operation in conjunction with wide pulleys with special rope grooves. Here the grab can pass exactly through the precisely-dimensioned pulley, making changing grabs a quick and simple process. Because of its lighter weight, the 655 HD with single-axle boom head is particularly suitable for dynamic dragline work in the extractive industry. The wide range of equipment variants available for the SENNEBOGEN duty cycle crawler crane means it is universally suitable for numerous applications – for example with a grab, crane or wrecker's ball. It can also be turned into a fully fledged crawler crane if required. Using a jib, heights of up to 56 m are easily attainable.
Green Efficiency technology: bringing economy and ecology into harmony
The 655 HD is the first machine in SENNEBOGEN's Crane Line to feature Green Efficiency technology, which aims to bring economy and ecology into harmony with one another. Features include temperature-controlled fan drives, an automatic start-stop system and cutting-edge exhaust gas treatment, all of which boost performance but minimize fuel consumption and emissions. Generously-dimensioned hydraulic valves and tubes enhance the machine's efficiency, while high-quality components ensure ultimate reliability. It comes with a powerful 261 kW Caterpillar diesel engine and a multi-circuit hydraulic system for optimal performance in every situation.
The comfortable maXcab is good news for drivers, because it is superbly ergonomic, has a sliding door for easy entry, and offers outstanding all-round visibility. It is also equipped with the SENNEBOGEN control system SENCON, which lets the operator read off, monitor and manage all machine parameters from a central location.
Apart from its superb adaptability, the other major strength of the new 655 HD is its compactness. Its telescoping crawler track and innovative self-assembly system make it simple and versatile to transport and deploy, and at just 3.30 m wide, it can be carried on a conventional flatbed truck. With the help of the hydraulically adjustable A-frame, the 655 HD can also independently ballast itself, meaning it is ready to use again in no time.
Captions:
The new SENNEBOGEN 655 HD duty cycle crawler crane combines striking versatility with superb quality, and is suitable for use in both foundation construction and the extractive industry.
Operator Volker Unertl praises the SENNEBOGEN 655 HD: "It's made for dragline bucket implementation".
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Source: SENNEBOGEN
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