Grove GMK6400

Launched during Bauma 2013, the Grove GMK6400 stands as the most powerful six-axle mobile crane in its class, designed by Manitowoc for high-performance lifting on complex job sites. The crane integrates several industry-first innovations such as the self-rigging MegaWingLift™, a patented system that boosts lifting performance while eliminating the need for an auxiliary crane during installation. This innovation, along with the Fuel Saver system, earned Grove the “Innovation Manufacturer” award at the 2012 ESTA Awards.

The GMK6400 offers an exceptional main boom length of 15.4 m to 60 m, constructed with Grove’s TWIN-LOCK™ technology. A maximum lifting height of 136.6 m is achievable when configured with lattice extensions and luffing jib options (25–79 m jib in 6 m and 12 m sections). Additional optional jibs include heavy-duty jibs (3.5 m, 5 m, 7.5 m) and boom removal kits, offering unmatched versatility.

Key to the crane’s robust performance is the Mercedes-Benz OM502LA Tier 4i engine, delivering 405 kW (551 HP) at 1800 rpm and 2600 Nm of torque at 1300 rpm. The engine is paired with a ZF AS Tronic 12-speed automatic transmission, operating on a 12 x 8 x 12 drive configuration with 6 axle lines. Axle lines 1 & 2 use conventional drive, while axles 4–6 feature Grove’s MegaDrive™ for enhanced traction.

The GMK6400’s carrier is built with a high-strength steel torsion-resistant box-type chassis, equipped with Grove’s MEGATRAK™ independent suspension system and hydropneumatic hydraulic lockouts that support excellent on- and off-road stability, even when crab steering. It uses 385/95 R25 tires and has an optional tire upgrade to 445/95 R25 or 525/80 R25.

Outrigger operations are fully hydraulic and controlled from both superstructure and carrier sides with automatic leveling and LED indicators. It supports heavy lifts with a standard 135 tonnes counterweight, installed in modular sections with optional hydraulic removal.

The operator cab is ergonomically designed with an aluminum structure, climate control, armrest-integrated joysticks, and Grove’s ECOS system for crane management via CAN-BUS. Load management and safety are ensured with a Load Moment Indicator (LMI), anti-two block system, and visual/audible overload warnings.

Notable Deployments:

• Fleurieu Cranes in Australia received the first GMK6400 unit in early 2015, successfully dismantling a tower crane at the Royal Adelaide Hospital using a 44.79 m boom and 43 m luffing jib at a 46 m radius.
• Alanoca in Bolivia added the first GMK6400 in the country in 2017, immediately assigning it to major infrastructure projects including cement and petrochemical plant construction.

In summary, the GMK6400 is a flagship model for high-capacity, mobile lifting solutions that merges advanced engineering, efficient rigging systems, and market-leading safety and control features, suitable for critical infrastructure, energy, and construction sectors.