Grove GMK3050-1

Introduced in 2004, the Grove GMK3050-1 is a 50-ton capacity all-terrain crane built on the same carrier and superstructure as its sibling, the GMK3055, but outfitted with a different boom configuration. It utilizes a five-section full-power Megaform U-shaped boom, measuring 9.6 to 38.0 meters, designed for faster telescoping cycles and efficient load handling. The maximum tip height reaches 40.0 meters with the standard boom, and up to 55.0 meters when equipped with the optional 15-meter swingaway jib.

One of the key innovations of the GMK3050-1 is the option for a hydraulically luffing swingaway jib (8.7 m to 15 m), which allows for jib offset adjustments under load from the cab—ideal for confined sites or when repositioning without boom retraction is required. This addresses one of the main limitations of compact city cranes by giving the GMK3050-1 flexibility in low-clearance or high-reach operations.

The crane rides on a three-axle, all-terrain chassis that is notably compact—just 8.68 meters long (without boom overhang), making it among the shortest in its class. With the boom stored, total length is 10.64 meters. The GMK3050-1 features Grove’s MEGATRAK® independent suspension system and hydropneumatic suspension for excellent off-road capability and ride quality. The 6x4x6 configuration provides power to axles 2 and 3, with steering on all three axles and optional 6x6x6 full-drive.

The crane is powered by a Mercedes-Benz OM501LA diesel engine producing 265 kW (355 hp) at 1800 rpm, paired with a ZF-AS Tronic 12-speed automatic transmission. This engine meets EUROMOT/EPA/CARB Tier 4i non-road emission standards. The carrier offers a 400-liter fuel tank and has ABS-supported pneumatic braking systems along with exhaust and constant throttle brakes for safety.

The superstructure includes a hydraulic system with load-sensing axial piston pumps, electronically controlled joysticks, and CAN-BUS integrated ECOS (Electronic Crane Operating System) for smooth operation and diagnostics. The tiltable aluminum cab provides excellent visibility, a suspension seat, and integrated controls for both travel and crane functions.

The standard counterweight is 7.6 tonnes, with an optional extension to 11.6 tonnes. The main winch is powered by an axial piston motor and planetary gear, capable of line speeds up to 125 m/min, with a maximum single line pull of 50 kN.

Overall, the GMK3050-1 is a flexible and compact all-terrain crane that delivers city crane maneuverability with all-terrain muscle, and thanks to its hydraulic swingaway jib and robust boom design, it’s well-suited for complex urban lifting and general construction applications alike.