To strengthen its four-axle all-terrain crane line-up, Manitowoc has unveiled the Grove GMK4070L at bauma 2022 in Munich, Germany. At its full 60 m, the crane will be able to lift 4.4 t, while at 49 m owners will be capable of picking loads of up to 8.3 t. When working at its maximum radius of 46 m, the GMK4070L will lift 1 t.
Up to 78 m of maximum tip height is available when the 60 m main boom is paired with its 15 m swingaway jib option. These are capabilities commonly associated with 100 t cranes and allow the new model to take on jobs that would typically require larger cranes.
“The Grove GMK4070L offers improved engineering design and adopts several latest technologies to deliver a new level of performance, operation, serviceability, and fuel efficiency,” said Andreas Cremer, vice president of product management for mobile cranes at Manitowoc. “It’s a crane that will be a true game changer, surprising many customers with just how much more a 70 t all-terrain crane can achieve.”
Offering versatility on construction sites, the GMK4070L will give owners a host of options for travel. At a configuration of 16.5 t per axle, the crane will carry 17.8 t of counterweight, just shy of its full 19 t complement. In situations requiring 12 t per axle, it will carry up to 13.3 t, while for 10 t per axle configurations it will be able to travel with 5.3 t of counterweight.
A Telma retarder packaged in the carrier design will reduce the risk of overheating and overall wear and tear on the conventional service brake system. The frictionless, maintenance-free Telma braking system remains effective even after the engine is switched off, or when the gearbox is in neutral, ensuring full braking power is available, regardless of the crane’s speed.
Operators will travel inside the new high-visibility carrier cab, which will offer protection in line with European ECE R29-3 regulations, ensuring security in frontal impact, roof and rear wall strength. Power for both the carrier and the superstructure will come from a single 320 kW (430 HP) Mercedes Benz OM470LA 6-cylinder diesel engine. Compliant with Euromot 5/Tier 4 Final requirements, this engine is approved for use with HVO Diesel, for customers looking to further reduce their CO2 emissions or meet tight environmental jobsite requirements. As with most new Grove mobile cranes, the engine’s ECO mode can be used in conjunction with the transmission’s Fuel Saver mode.
Technology and Automation
The GMK4070L will be one of the first Manitowoc cranes to offer the new Grove CONNECTTM digital platform that provides owners with real-time access to fleet data. Through Grove CONNECTTM, fleet managers can get insights into the crane’s performance with just a couple of taps on a screen. Service technicians are supported with remote, optimized troubleshooting, reducing the frequency of onsite trips and strengthening preventative maintenance programs.
The optional MAXbase feature helps users reduce setup time at the jobsite and gives them a wider choice of outrigger positions. With this option, the crane caters to confined spaces or projects where obstacles are preventing setup in the preferred location. The productivity-enhancing MAXbase allows the crane’s four double hydraulically telescoping outriggers to be extended to a range of symmetric and asymmetric positions. This promotes flexibility and enables lifting work to continue in difficult environments.
The operator also has access to Manitowoc’s Crane Control System (CCS), which supports both setup and lifting. Using its Boom Configurator feature, the operator can select the desired arrangement of the seven-section MEGAFORM boom with TWIN-LOCK dual-pinning system.