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Grove GMK7550

Grove GMK7550
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Grove GMK7550 Product Guide Features • 450 t (550 USt) capacity •.60 m (197 ft) five-section boom •.25 m - 79 m (82 ft - 259 ft) lattice luffing jib • 120 t (264,500 lb) counterweight with hydraulic installation/removal system • MegaWingLift™ • Allison 4800 SP transmission

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Features MEGATRAK™ The MEGATRAK™ suspension system is the best off-road driveline available on the market today. The system’s versatility and performance allows the GMK7550 to operate as a true all-terrain crane. The MEGATRAK™ independent suspension and all-wheel steer system allows wheels to remain on the ground at all times so stresses and weight are not continually transferred between axles. MEGATRAK™ provides true ground clearance where others just raise the chassis. Other benefits of the MEGATRAK™ system are: • A reliable suspension system • Excellent job site maneuverability with...

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Travel proposals Working range/load charts main boom Working range/load charts luffing jib Working range/load charts fixed jib Working range/load charts heavy duty jib Symbols glossary

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Specifications Superstructure Boom 16 m - 60 m (53 ft - 197 ft) five-section, full power boom with patented TWIN-LOCK™ boom pinning system. Maximum tip height: 63 m (207 ft). Boom elevation Two lift cylinders with safety valves provide boom angles from -1.2° to +82°. 120 t (264,500 lb) consisting of various sections with hydraulic installation/removal system (see counterweight configuration on page 12). Engine Mercedes OM906LA, diesel, 6 cylinders, water cooled, turbocharged, 205 kW (279 hp) at 1800 rpm. Max. torque: 1100 Nm (811 ft/lb) at 1200 rpm. Engine emission: EUROMOT/EPA/CARB Tier...

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Specifications Superstructure continued *Optional equipment Hoist Main and auxiliary hoist are powered by axial piston variable displacement motor with planetary gear and brake. “Thumb-thumper” hoist drum rotation indicator alerts operator of hoist movement. Main Auxiliary Line length Rope diameter Line speed Line pull Second spotlight on superstructure cab Stereo/CD player Lift enhancement system (MegaWingLift™) Additional 40 t (88,200 lb) counterweight for MegaWingLift™ Worklights on boom base section Aircraft warning lights Hook blocks Adapter for heavy duty jib 360° positive swing lock...

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Specifications Carrier continued Transmission Allison automatic 4800 SP-R, seven forward and one reverse speed. Transfer case with two speeds and inter-axle differential lock. Hydraulic transmission retarder. Two-man, aluminum construction driver’s cab includes the following features: safety glass; driver seat with pneumatic suspension, engine-dependent hot water heater and air conditioning. Complete instrumentation and driving controls. Electrical system 24 V system with three-phase alternator 28 V/100 A, 2 batteries 12 V/170 Ah. Maximum speed Seven axles. 1, 4 and 5 are drive/steer. Axles...

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Shown with 8th axle

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Dimensions Luffing jib combinations Without angle offset Foot Section Short intermediate sections, small crosssection, each Short intermediate sections, large crosssection, each Length x width x height m (ft) Long intermediate sections, small crosssection, each Long intermediate sections, large crosssection, each Angle piece Reducing piece Head piece Rear pendant link for short intermediate section 12.20 x 0.20 x 0.20 Rear pendant link for (40.03 x 0.70 x 0.70 80) long intermediate section Luffing control arm with fall-back guard strut *Individual weight of rear pendant link: 360 kg (795 lb)

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Dimensions Lattice boom extension combinations Without angle offset Length x width x height m (ft) Short intermediate sections, small crosssection, each Short intermediate sections, large crosssection, each Foot Section Long intermediate sections, small crosssection, each Long intermediate 12.20 x 1.80 x 1.90 sections, large cross- (40.03 x 5.90 x 6.23) section, each Angle piece Reducing piece Head piece

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Dimensions Aerial rigging of jib Remove bolt

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Dimensions Aerial rigging of jib

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Travel proposals Trailing boom dolly with 8th axle 26 356 (86' 6") Axles 1 - 3 Boom in dolly over rear, rear outrigger box removed, 8th axle installed Unit equipped with: .5 tires on aluminum rims - axles 1 through 8 Operator, 75 kg (165 lb) Welded on MEGAWINGLIFT hardware Dolly weight: kg lb Allow % variation in weight due to manufacturing tolerances Axles 1 - 3 Boom removed, superstructure over rear Unit equipped with: • Rear outrigger box removed • 20.5 tires on aluminum rims • Operator, 75 kg (165 lb) Allow 3% variation in weight due to manufacturing tolerances

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Travel proposals Boom over front Axles 1 - 3 Boom over front, rear outrigger box removed Boom over front, rear outrigger box installed Boom over front, 8th axle installed Unit equipped with: • 20.5 tires on aluminum rims • Operator, 75 kg (165 lb) • Welded on MEGAWINGLIFT hardware Allow 3% variation in weight due to manufacturing tolerances Axles 1 - 2 Boom in dolly over rear, rear outrigger box removed, 8th axle installed, axles 3 and 6 raised Unit equipped with: • 20.5 tires on aluminum rims - axles 1 through 8 • Operator, 75 kg (165 lb) • Welded on MEGAWINGLIFT hardware • 3 axle dolly (...

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Working range Main boom Height from the ground in feet Operating radius in feet from axis of rotation Hook heights shown in the working diagram do not consider loaded boom deflection.

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Load charts Main boom Pounds (thousands) Loads > 420,000 lb can only be lifted with additional equipment *Over rear, 20 ft outrigger span, with special equipment Loads > 420,000 lb can only be lifted with additional equipment * Over rear, 20 ft outrigger span, with special equipment THIS CHART IS ONIYA GUIDE AND SHOUID NOT BE USED TO OPERATE THE CRANE. The individual crane's load chart, operating instructions and other instructional plates must be read and understood prior to operating the crane

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