Grove has unveiled two new Rough Terrain cranes at an event held at its Shady Grove plant, the 65 tonne GRT765 and 80 tonne GRT780.
The new cranes are due to be launched later this year - the GRT765 will replace the RT765E-2, while the GRT780 replaces the RT770E and the GRT880. The 65t GRT765
The new Grove GRT765
The GRT765 will feature a four section 38.5 metre full power main boom compared to 33 metres on the current model, topped by a 10.1 to 17.1 metre bi-fold swingaway extension, which can be offset by up to 45 degrees, for a maximum tip height of 58.5 metres. While the nominal rating of the new model is 65 tons and 65 tonnes, it can actually only handle 58 tonnes at three metres radius, or if you prefer 65 tons at 10ft. Capacity on full boom is 17.7 tonnes at a radius of 7.8 metres, while the maximum radius is 33 metres at which point it can handle 656kg.
The GRT765 has a 38.5m four section boom
The counterweight is 6.9 tonnes, a hydraulic counterweight removal system is available as an option. The total weight is 42.4 tonnes, while the overall width is three metres.
The cab is 76.2mm wider than its predecessor, which in turn was wider than the unit it replaced. It also offers up to 20 degrees of tilt, an increased glazed area and comes with a three camera system for improved all round visibility. Operations can be managed via larger 12 inch touchscreen CCS display, common to all new Manitowoc group cranes.
Service tasks have also been made easier with the company’s oCSI (on Crane Service Interface) for enhanced diagnostics and service, while centrally located service points on the superstructure and chassis help speed up routine maintenance.
The 80 tonne GRT780
The new GRT780
The Grove GRT780 will feature a 47.3 metre five section full power boom and offers the same 10.1 to 17.1 metre swingaway as the GRT765, for a maximum tip height of 67 metres. Maximum useable capacity is 62.6 tonnes at three metres with 72.6 tonnes/80 tons theoretically possible at 8ft/2.4 metres. Capacity on full boom is 8.1 tonnes, at a radius of up to 15 metres, and at the maximum main boom radius of 39 metres its 567kg – all with the largest counterweight.
The GRT780 has a five section 47.3m boom
The standard counterweight is just under eight tonnes, which can be increased to 9.3 tonnes for additional capacity in the stability area of the chart. The crane’s total weight is 45.1 tonnes or 46.5 tonnes with the larger counterweight. The overall width is three metres, while the cab and tech is the same as its smaller cousin.
Both new cranes offer a 10.1 to 17.1m offsetable bi-fold swingaway
Both cranes are fitted with the same winch/hoist offering a single line pull of 7,800kg for fast cycle lifting and set up. They also feature the Grove MAXbase variable outrigger system, monitoring and automatic load chart calculation. The cranes are also the first Grove RTs to offer the Grove Connect telematics and fleet management system, launched in 2022.
Grove RT crane product manager John Bair said: “Customers will immediately notice the significant improvements in reach and strength, but we’ve also packed a lot of other benefits into these new models. The operators will love the comfort of our new, wider cab as well as the expanded CCS display. We’ve also added the latest productivity and fleet management technology with our MAXbase variable outrigger positioning system and the Grove Connect telematics platform. And packed all of this into a very compact and lightweight package, which makes this crane very easy to transport, as well as manoeuvre around busy job sites.”
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