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| Renaissance of the 20 t duty cycle crawler crane  With the new Sennenbogen 620 HD crawler crane, the family company from Straubing presented an extremely compact 20 t duty cycle crawler crane at bauma 2010. With a main boom length of 6-20 m, this robust machine is ideal for pipework applications (well construction or geo thermal applications) to a pipe diameter of 60-120 cm. Construction sites of this kind are often of limited duration and difficult to reach. Quick operational readiness and easy transportation between construction sites are therefore the major advantages of the Sennenbogen 620 HD. Even in heavy-duty drag line operation, the 620 HD impresses with the robust design of all its components and the telescopic crawler undercarriage which can be extended to around 4 m external width. The 600 mm flat shoes guarantee the best possible stability of the machine.The 620 HD offers even more. The combination of main boom with rigid fly jib makes the Sennenbogen 620 HD ideal for crane and assembly work, complete with large working radii and lifting heights in this configuration. The benefits of this compact, high-performance machine with 2.75 m rear end radius become particularly clear during use in tight spaces such as on motorway or bridge construction sites. The unique highlight of this machine is the hydraulic folding capability of the main boom to a length of 12 m. A cylinder in the lower boom section folds the main boom backwards into transport position. The fly jib can also be folded in quickly and easily to a length of 10 m over the A-frame. This makes the Sennenbogen 620 HD flexible and ready to use in record time on any construction site. With a transport width of 2.75 m and transport height of max. 3.13 m (with folded main boom) the machine is also ideal for quick and cost-efficient transportation. With the main and fly jib folded, the transport height is 3.5 m. And the characteristic Sennenbogen modular construction enables even more! The Sennenbogen 620 is also available with mobile undercarriage with dual tyres. Quick transportation with a lattice boom crane between adjacent work sites is extremely important for water management offices, for example. The machine is used as a crane for bank reinforcement with stones or with a clamshell grab for dredging. The benefits of the quick operational readiness and easy transportation afforded by the hydraulic folding mechanism of the main and fly jib are retained even with the agile mobile undercarriage. write your comments about the article :: © 2010 Construction News :: home page |