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The World of Plant & EquipmentThe Grove RT9150 allterraincrane bringstogether some of thestrongest lift capabilitiesin its class with anextremely long 79.85 m(262 ft) boom.New rough-terraincranes unveiledduring a specialcustomer day, atManitowoc's ShadyGrove facility in theUSA earlier thismonth.New RTcrane fromManitowocThe newest addition to Grove’s rough-terrain crane product line was unveiled at the event. The 135 t (150 USt) capacityRT9150E is the world’s largest rough-terrain crane, and its 60 m (197 ft) main boom is the longest on any currentproduction rough-terrain crane. At the same event, US customers got their first opportunity to see the Grove GMK6300Lall-terrain crane that was launched at Bauma 2010 held in Munich, Germany earlier this year.New rough-terrain craneThe latest in Grove RT cranes - the company’s biggest rough-terrain crane in terms of both capacity and reach - hasbeen announced. The Grove RT9150E has a 135 t (50 USt) rated capacity. It also has a 12.9 to 60 m (42 ft to 197 ft)main boom, the longest on any current production rough-terrain crane.Doyle Bryant, director of product marketing for Manitowoc, said exceptional reach is a key feature. "This crane offersa maximum tip height of 95 m (312 ft), and that will impress people. With the available length of main boom, it can reachplaces that previously required a jib. We’ve combined proven Grove technology from our all-terrain crane and roughterraincrane lines to create this RT9150E, which we believe is the new market leader."The RT9150E combines the upper works of a Grove GMK5165-2 all-terrain crane (known as the GMK5130-2 inmarkets outside the U.S.) and the lower works of the 118 t (130 USt) capacity RT9130E rough-terrain crane. The resultis a high-capacity crane that sits on a compact and durable carrier with obvious applications for industrial work."There will be a lot of applications in refineries, power plants and otherlarge projects where space is often tight, so the compact carrier gives thecrane additional value."The 6-section main boom on the RT9150E benefits from Grove’s patentedTWIN-LOCK pinning technology that offers a lighter boom with greaterstrength. When working with the 60 m (197 ft) boom, customers can achievea maximum tip height of 63.5 m (208 ft 10 inch). Maximum radius with themain boom is 54.8 m (180 ft) and at this distance the crane can lift 1,724 kg(3,800 lbs.)An 11 - 18 m (36 -59 ft) bi-fold lattice swingaway extension offers fartherreach, with fixed offsets of 0º, 20º and 40º. When working with this jib, theRT9150E can reach a maximum tip height of 81.4 m (267 ft) and a maximumworking radius of 67 m (220 ft), where capacity is 2,000 lbs.To reach the maximum tip height, users will need two additional inserts,one 26 ft and the other 20 ft, which fit between the boom nose and the bi-foldswingaway. Adding these extends the maximum tip height of the crane to312 ft, while taking the maximum outreach to 220 ft, where capacity is 907 kg(2,770 lbs).When working with the 60 m (197 ft) boom, customers canachieve a maximum tip height of 63.5 m (208 ft 10 inch)Page 28 Contractors World Vol 1 No 9