hydraulic crawler cranes 7250
12Pages

HYDRAULIC CRAWLER CRANE Crawler Crane Max. Lifting Capacity: 250t at 4.6m Luffing Tower Max. Lifting Capacity: 25t at 18.0m

Technology and Power, KOBELCO Takes Pride In Hydraulic Crawler Crane 7250 Now Ready to Launch Kobelco's hydraulic crawler crane 7250 has taken advantage of new technologies to raise its performance to new heights. Precision and high-elevation crane jobs depend on accuracy and speed, whereas heavy-lifting depends on trustworthy power and strength. The perfect answer comes in our new 7250. Hoist winches with powerful linepull are designed to handle the toughest jobs. Large drum capacities combined with a new hydraulic system promote ultra-smooth operation. Excellent transportation features...

Hydraulic Crawler Crane 7250 5 Major Features 1. Massive and Versatile Lifting Performance 2. Smooth Operation and Control 3. Excellent Cab with Enhanced Functions 4. Excellent Transportability and Assembly 5. Safe,Environmentally-Conscious Design Photos in this catalogue may include optional items. 2

For both high and heavy lifting Massive and Versatile Lifting Perf Large Lifting Capacity Max. lifting capacity 250t at 4.6m 76.2m Max. crane boom length Long Boom Configuration to Achieve Wide Working Ranges The long boom specification provides a wider operating range with plenty of lifting capacity. The long boom can be made up of insert boom and tower insert jib, to make economic use of attachment components. Long boom length 73.2m to 91.4m 3.2t at 78.1m Lifting capacity at the max. working radius (Using the 88.4m long boom) Large Working Ranges with Fixed Jib Configuration The fixed jib...

formance High-Output Engine High-Speed Lifting Increases Work Efficiency The engine has an impressive rated output of 247 kW and complies with NRMM (Europe) Stage IIIA and US EPA Tier III exhaust emissions regulations. All of this power works with KOBELCO’s unique Engine Speed Sensing (ESS) control system and new hydraulic systems to ensure stable and smooth simultaneous operations. The main and auxiliary winches deliver a fast maximum hoisting and lowering speed of 110 m/min that improves operational efficiency on high-rise jobs. Engine output 247 kW Meets NRMM (Europe) Stage IIIA Max....

For greater work efficiency Smooth Operation and Control New Hydraulic System Improves Simultaneous Operations In case of luffing tower operation, the aux winch is used for jib hoisting. And the line speed reduction occurs by main hoist·lower and jib hoist·lower combined operation due to hydraulic pressure interference with conventional series hydraulic circuit (conflux hydraulic circuit). The 7250 adopts one-pump to one-motor system (independent hydraulic circuit) for main, aux hoist and boom hoist. This is completely interference-free hydraulic circuit to perform smooth combined operation...

For better man-machine communication Excellent Cab with Enhanced Functions Multi-Function LMI Display Multi-Display The newly designed load moment indicator (LMI) system features a large, easy-to-read LCD display. The rated load, actual load, load ratio, and other information are displayed in large characters. Warnings and other items are displayed in color, and text messages and alarms alert the operator to prevent dangerous conditions from developing. Other information can also be displayed, including a rated load chart and rated load curve, in addition to a function that regulates the...

To ensure safe assembly and increase actual working hours Excellent Transportability and Assembly Base Machine Width of 3.2m (without Boom Base) and 3.4m (with Boom Base) Swing Cab Transport with Boom Base The cab can be easily turned by hand toward the front of the machine during transportation so that the upper machinery fits within a width of 3.2m. This enables the machine with axles to be transported on a trailer. It is also possible to transport with boom base. The width and weight is within 3.4m and 44.5t. This eliminates installation of boom base and boom hoist rope in jobsite,...

e boom Faster Attachment Assembly and Disassembly A variety of new mechanisms greatly reduce the time needed to assemble attachments. This results in lower labor and assist-crane costs, and greater productivity on the job. The stowing bracket makes securely tighten the guy cables on to boom inserts for transportation. This also ensures that the guy cables are correctly installed during assembly (optional). The upper spreader stowing guide makes it easy to connect guy cables. The boom connector pin holder prevents the loss of boom connector pins during assembly/disassembly and...

No compromise in KOBELCO’s safety policy Safe, Environmentally-Conscious Two-Stage System to Prevent Boom and Jib Over-Hoists Automatic Stop Release Switch with Safety Function With primary and secondary over-hoist prevention devices, this new safety system can prevent boom over-hoist at two stages. The primary stop function is activated when the boom or tower approaches the critical angle-toground during hoisting. This new system monitors the angle-to-ground of the boom, tower or tower jib with a sensor, and swiftly alerts the operator of danger. For the tower, the angle-to-machine is also...

Design Side-Engine Layout for Easy Maintenance A new engine layout on the side of the machine provides easy access for routine inspections and servicing. Maintenance crews can access the entire power plant just by opening the side door. Super Fine Filter, a Long-Life Filter for Hydraulic Oil The large-capacity, super-fine filter is made of a high-performance filter medium consisting of glass fiber reinforced with steel wires. The replacement cycle is extended to four times longer than that of conventional filters to reduce lifelong operating costs. Photomicrograph (x250) • Super fine filter...

Main Specifications (Model: 7250-2F) Crane Boom Max. Lifting Capacity Max. Length Working Speed 250 t/4.6 m Swing Speed 2.2 min-1 {rpm} 76.2 m Travel Speed 1.1/0.7 km/h Power Plant Long Boom Max. Lifting Capacity Max. Length 37.5 t/14.4 m 91.4 m Max. Combination 22.7 t/15.0 m Max. Combination Tower Angle 25 t/18.0 m 64.1 m + 51.8 m Rated Line Pull (Single Line) Wire Rope Diameter Wire Rope Length 400 liters Hydraulic System Main Pumps 4 variable displacement 31.9 MPa {325 kgf/cm2} Hydraulic Tank Capacity 600 liters Weight 110 m/min (1st layer) 132 kN {13.5 tf} 28 mm 390 m (Main) 220 m...