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The Grove flagship the GMK7550 offers a 550-ton maximum capacity on a seven-axle carrier. The 7550 has a stowing crane cab for highway travel. The optional MegaWingLift attachment increases capacity throughout the working radius.
The GMK7550, offers a 550 USt maximum capacity on a seven-axle carrier with a stowing crane cab for highway travel. The optional MegaWingLift attachment increases capacity throughout the working radius.
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:
TWIN-LOCK™: Boom pinning mechanism automatically pins the sections in position using two horizontal pins.
ECOS and EKS 5: Electronic Crane Operating System - ECOS enables control of the entire crane’s principle operations. Simple programming eases lift planning and a supply of essential information allows full concentration on the lift itself.
The EKS 5 monitors the lifting conditions of the crane at all times and provides a full graphic display, rear lighting, graphic of boom telescoping percentage, and load charts.
CraneSTAR is an exclusive and innovative crane asset management system that helps improve your profitability and reduce costs by remotely monitoring critical crane data. Visit www.cranestar.com for more information.
|Chassis||Special seven-axle carrier, welded torsion resistant frame is fabricated from high-strength steel|
|Cab||All aluminum construction cab is tiltable (approximately 20°) and includes safety glass and adjustable operator’s seat. Other features include engine independent hot water heater including 24 hour timer, air conditioning, armrest integrated crane controls, and ergonomically arranged instrumentation. Cab hydraulically stows to the rear of the superstructure for highway travel.|
|Capacity||550 T (450 t)|
|Max Tip Height||443 ft|
|Engine Model||QSX15 & QSB6.7|
|Engine Type||Turbo charged Diesel|
|Horsepower||Superstructure: 300 hp (205 kW)
Carrier: 600 hp (420 kW)
|Torque||Max. torque: 2779 Nm (2050 ft lb) at 1400 rpm.
Max torque: 1044 Nm (770 ft/lb) at 1500 rpm
|Max Travel Speed||53 MPH w/20.5 R25 tires|
|Fuel Tank Capacity||79 Gallons & 132 Gallons|
|Control System||Full electronic control of all crane movements is accomplished using electrical control levers with automatic reset to zero. Controls are integrated with the LMI and engine management system by CAN-BUS.|
|Drive||14 x 6 x 14|
|Axles||Seven axles. 1, 4 and 5 are drive/steer. Axles 2, 3, 6 and 7 are steer only|
|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.|
|Driver's Cab||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.|
|Hydraulic Capacity||415 Gallons|
|Hydraulic System||Five separate circuits, Three axial piston variable displacement pumps with electronic power limiting control, 1 axial piston variable displacement pump for slewing and 1 fixed displacement pump for auxiliary gears. Standard thermostatically controlled oil coolers keep oil at optimum operating temperature|
|Brakes||A dual circuit air system operates on all wheels with a spring-applied, air released parking brake acting on axles 2, 4, 5 and 7. An air dryer is fitted to remove moisture from the air system. Standard engine compression brake and transmission retarder.|
|Suspension||GMK7550 features the Grove exclusive MEGATRAK™ suspension. This revolutionary design features an independent hydroneumatic system with hydraulic lockout acting on all wheels. The suspension can be raised 170 mm (6 - 1/2 in) or lowered 130 mm (-5 in) both longitudinally and transversely and features an automatic leveling system for on-highway travel|
|Tires||14 tires, 385/95 R25 (14.00 R25) (vehicle width 3,00 m [9.8 ft])|
|Steering||Dual circuit steering system is hydraulic power assisted with emergency steering pump. Axles 1, 2, 3, 6 and 7steer on highway. Separate steering of the 4th, 5th,6th and 7th axles for all wheel steer and crab-steer, controlled by an electric rocker switch.|
|Outriggers||Hydraulic two-stage outrigger beams are extended by a single hydraulic cylinder and two cables. Outriggers can adjust to two positions:
Fully extended (100%) - 8,9 m (29.2 ft)
Partially extended (50%) - 6,1 m (20 ft)
Four 810 mm x 810 mm (32 in x 32 in), self stowing, steel outrigger pads provide rigid lifting base. Outrigger controls are located on both sides of the carrier. Electronic level indicators with automatic levelling system. Outrigger pad load indication through ECOS and carrier controls. Includes outrigger monitoring system.
|Counterweight||120 t (264,500 lb) consisting of various sections with hydraulic installation/removal system|
|Gradeability||32% with 20.5 R25 tires (14x6x14)|
|Swing||Three axial piston fixed displacement motors provide swing speed of 0 - 1.1 RPM thru planetary gear box. Also provided is a spring applied, hydraulically released automatic swing brake with foot operated release for free swing|
|Jib||Luffing jib is a lattice design with lengths of 25 m-79 m (82 ft -259 ft) in sections of 6,2 m (20 ft) and 12,2 m (40 ft). The luffing jib converts to a fixed offset lattice jib providing lengths of 12 m-70 m (39 ft-230 ft) offsettable at 3° and 25°.|
|Boom Type||5-section, full power boom with patented TWIN-LOCK™ boom pinning system|
|Max Boom Length||53 ft - 197 ft. (16 m - 60 m)|
|Max Tip Height-Boom||207'|
|Lift Speed||427 fpm (130 mpm)|
|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.
Line Length: Main-1,509’; Auxiliary-2,264’
Rope Diameter: Main-0.94”; Auxiliary-0.94”
Line Speed: Main-427 fpm; Auxiliary-427 fpm
Line Pull: Main-24,729 lbs.; Auxiliary-22,030 lbs.
Hoist cameras and lights included
|Boom Elevation||Two lift cylinders with safety valves provide boom angles from -1.2° to +82°|
|Max Capacity||550 US tons|
|Electrical System||24 V system with three-phase alternator 28 V/100 A 2 batteries 12 V/170 Ah.|
*Price, if shown, is Manufacturer's Suggested Retail Price (MSRP) and does not include government fees, taxes, dealer freight/preparation, dealer document preparation charges or any finance charges (if applicable). MSRP and/or final actual sales price will vary depending on options or accessories selected.