ROUGH TERRAINS Ӏ SECTOR REPORT
j The new N061-RG, with a
capacity of just 16t and a boom length of 28m, is a very different machine from larger globally- focussed machines. Where it excels is in manoeuvrability. With Japanese developers working in crowded cities, and often trying to make us of as much space as available on expensive ground, compact cranes are key. The new crane measures just
8.3m long x 2.2m wide, with a height of 3.15m. On this relatively compact base, with a tight turning circle, it still has a boom that's 50cm longer than that on preceding models. It features systems to adjust engine speed to the demands of lifting, increasing power automatically when the crane lever is used, just as much as is needed. When the crane is idling,
the power take off pump stops automatically, further reducing fuel consumption, noise, and emissions. The new crane also features an upgraded engine, in line with the latest emissions standards, and a range of modern cab and remote-control options. When Terex sold off many of its crane ranges, it retained facilities manufacturing cranes in two key classes: tower cranes, and rough terrain cranes. These latter join the company’s class-defining Franna articulated cranes, a crane type once rarely seen outside of Australia, but now being sold in markets such as India, under the umbrella of the company’s minerals processing division. When the sale to Tadano of
its all terrain and crawler crane ranges, built in the former Demag factory in Zwebrücken, took place, Terex had only recently developed a new control system. This was sold along with the crane factory and the US company’s designer started work on developing a replacement.
38 CRANES TODAY
Terex will launch the 40t TRT 40US at ConExpo. It is the latest of new series of rough terrain cranes and incorporates the company’s new TEOS control system
Energy rush
Rough terrain cranes have long played an important role in the energy sector. On big fossil fuel extraction and refi ning sites, they can often spend their entire working life on maintenance and routine construction work. As the global energy mix moves away from fossil fuels, towards renewables,
hydrogen, and modular nuclear, rough terrains will still have a vital role, handling some smaller generation and transmission components, helping set up wind farm cranes, and in general construction tasks. The centrality of these cranes to the energy sector prompted the Electric
Power Research Institute’s (EPRI) hoisting and rigging cranes user group to feature two Link-Belt rough terrain cranes, the 120t 120|RT and 75t 75|RT, during educational demonstrations at a September 2022 meeting in Lexington, USA. Matthew Hinman, the group’s principal technical leader for nuclear, explained during the event that, “We use mobile cranes extensively in our industry. We’re demonstrating boom defl ection (with the 120|RT), which is a common occurrence in our lifts. We lift very heavy objects at our power plants and boom defl ection is critical because often the tolerances are very tight. Safety is something we really take a lot of time and attention and focus on in our nuclear power plants. “With the 75|RT we are tripping a unit, or turning or rending depending on
your terminology, but we’re basically taking an object that’s installed vertically, and laying it down horizontally. We do that with pumps, large intake screens, and various structures in our power plants.”
Members of the Electric Power Research Institute used two Link-Belt models for educational demonstrations at a recent Lexington event
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