The long reach excavator is a development of the excavator with an especially long boom arm, which is primarily used for demolition and many other applications. Instead of excavating ditches, the high reach excavator is designed to reach the upper stories of buildings that are being demolished and pull down the structure in a controlled fashion. It has largely replaced the wrecking ball as the primary tool for demolition. The long arm can work in a tough and extreme working environment where other excavators can’t reach. This unique advantage makes it reliable enough to handle various constructions. The high mechanization and simple working organization of the long-reach excavator make it easier to be operated, thus improving working efficiency and saving labor resources.
Different types of models for long reach excavators
Long reach excavators with heavy-duty buckets
Modern models are designed exclusively for the marble and granite excavation industry, it is equipped with heavy-duty buckets that ensure long life even in tough applications. With its heavy-duty X-Frame and reinforced boom & arm, it provides more stability during lifting and side shifting of blocks. Equipped with CRDI Engine, results in high fuel efficiency and generates high torque at low speed to suit various job needs.
Long Reach Excavator 20 ton Excavator Long Boom Arm
Hybrid models with a 15-meter-long working mechanism hydraulic excavator are mainly applied to the construction of water conservancy works, port construction, river and lake dredging, and other engineering works. Its standard 800mm tracks can reduce the ground specific pressure and increase the working condition applicability of hydraulic excavators; by the hydraulic control system of the patented super-long working mechanism, the operator can easily control this kind of hydraulic excavators; the excellent design and manufacturing technology for the super-long working mechanism has ensured the long service life of the mechanism.
Long reach excavators for long-distance bucket
The new model features an elongated boom and arm and additional counterweight for increased digging capabilities in deep or long-distance digging applications, With an operating weight of 88,200 pounds, the model features a 268 horsepower Tier 4 Final diesel engine and up to 24,500 foot-pounds of bucket digging force. The extended arm and boom provide a maximum dig radius of 61 feet 3 inches, and a maximum dig depth of 46 feet 3 inches. The model also employs a low-maintenance selective catalytic reduction (SCR) Tier 4 Final solution that provides greater fuel efficiency without sacrificing power. SCR lets the engine run at peak performance throughout the work cycle and, because it works without a diesel particulate filter (DPF), there’s no DPF regeneration or associated lifetime service costs.
Long reach excavators with 7m boom and a 4.8m dipper arm
New models have been equipped with a 7m boom and a 4.8m dipper arm – the longest possible combination of digging equipment for this model of excavator – to give maximum flexibility and improve utilization within the quarry. In this configuration, the machine has a forward reach of 13.3m, a digging depth of 9.2m and a practical dump height of 7.2m, allowing it to easily dress down the remains of the blasted face from a safe distance. Mounted on 700mm wide trackpads, the machine has a maximum lifting capacity across carriage of 5.1 tonnes and, with its 2.1 cubic metre heavy-duty rock bucket is capable of feeding a mobile jaw crusher.
Long reach excavators with reach up to 118 feet high
New models offer exceptional reach, with a maximum pin height of 118 feet, and can also be easily reconfigured using extensions and different boom sets to become a multi-use demolition tool. This model also has a second hydraulic modular joint on the extension boom, allowing the angle of both the extension and the digging boom to be set quickly and safely between bent and straight configurations.
Long reach excavators with on-board satellite communication
New 50- to 87-tonne machines can operate for 24 hours a day in the most challenging environments, for earthmoving, construction, mining and quarrying operations. These are used specifically for quarrying, reinforced with additional features for tough conditions. These are renowned for the 120- to 800-tonne mining models, which have an exceptional loading and excavating capacity. With powerful yet economical engines, on-board satellite communication systems and easily accessible inspection points, you can rely on Hitachi large excavators to work reliably, with low running costs.
Conclusion
The long reach excavators have evolved, with features such as tilting cabs, boom-mounted CCTV equipment and extra protection making the machines more comfortable and precise to use, as well as being safer. Heavily reinforced cabs help boost operator safety by giving effective falling object protection. This evolution has continued and as time has moved on, various manufacturers have set up partnerships with specialists to build long reach machines to the specific requirements of each client.
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