Kobelco has unveiled its latest crawler crane models with new engine emission standards and a host of other "user friendly" attributes, the company announced. With lifting capacities ranging from 85 to 275 tons for the US market and 60 to 250 metric tons for the European market, new crawlers from Kobelco were designed to be "transportation friendly, assembly friendly and operator friendly," the company said.
For the North American market, including Canada, the new Kobelco crawlers are known as the 85-ton CK850G, 110-ton CK1100G, 120-ton CK1200G, 160-ton CK1600G and the 275-ton CK2750G.
For the European market, the new models are known as the 60-metric ton capacity CKE600G, 80-metric ton CKE800G, 90-metric ton CKE900G, 110-metric ton, CKE1100G, 135-metric ton 1350G, 250-ton CKE2500G and the 80-ton BME800G.
Another key emphasis on the new models is their "environmental friendly" attributes, including new engines compliant with EPA Interim Tier IV and Euro Stage IIIB. The company said that the rated output of the new engines has been upgraded from the previous series and that the engines were also "tuned up" for the best fit in crane operations.
At a time when fuel prices extremely high, the new cranes were designed to achieve a maximum 30 percent less fuel consumption from previous models. "We've adopted a totally new energy-saving assist system on all new models," Kobelco said.
The energy-saving assist system is known as the G Mode, a generic name for such assist systems as the auto idle stop system, the energy saving winch control system and the engine RPM limitation system.
With the idle stop system function, the engine automatically stops during idling time under certain conditions. Restart is accomplished by controlling the accelerator grip.
The new energy saving winch control system allows for the hoist winch to be turned at maximum speed without the engine accelerating under no-load lifting, the company said.
With the engine RPM limitation function, designers reduced the range of engine RPM, achieving the best performance in a normal mode, the company said.
Other attributes on the new Kobelco crawler models include a compact structure, allowing for greatly improved transportability. A minimum 2.99 meter width and 45 metric ton or less weight of the main house saves additional work needed for transportation such as arranging an escort car or special permits, Kobelco says.
The new models also feature an improved counterweight self-installation mechanism that allows counterweights to be stacked up on the ground and installed on the machine by vertical cylinders, Kobelco said.
The new safety support device is an optional item on the cranes. The counterweight amount detection device shows the correct amount of the counterweight required. The swing-angle detection device prevents over-swinging, and the ground level sensor prevents operations on uneven ground. Machine status is displayed on a new wide monitor in a newly designed operator cabin. The new cabin design enhances comfortable operation, Kobelco said.
The new Kobelco crawler cranes were designed to be adaptable to work at both bucket and lifting job applications. The hydraulic circuit can be fixed as dual pump flow or single pump flow so that the circuit can be perfectly adequate for both applications, Kobelco said.