Potain launches new hydraulic luffer11 February 2020
Potain has launched the MRH 175 tower crane, a new hydraulic luffing jib crane that will make its debut at ConExpo 2020.
The MRH 175 has a maximum capacity of 10t (11USt) and a maximum jib length of 55m (180ft). Tip capacity is 1.5t when working with the full 55m jib, or 2.7t if fitted with 50m of jib. Maximum line speed is 215 m/min when working with the high-performance 90HPL25 hoist.
The crane’s unique design, with its fixed counter jib and topless structure, facilitates fast erection and dismantling, as well as making it more compact for transport, needing only four standard containers. The elements weigh under 7.7t and there is a single counter-jib/jib foot package. The topless design also means less space is needed on sites where multiple cranes overfly the job site and the hydraulic design means no wire rope installation is needed. It also means a smaller assist crane is needed for erection as there is no cathead to assemble.
Potain’s hydraulic luffing design features a shorter counter-jib and out-of-service radius than rope-luffing alternatives. This frees up valuable space on job sites, with the MRH 175 delivering an out-of-service radius of 10.2 m, regardless of jib length. Freestanding heights of up to 62.8m are available with the 2m K-mast sections, and the crane is also compatible with 1.6m K-mast sections. On the hoisting drum, up to 956m of rope is available with the 90HPL25 winch, allowing users to choose either 478m in a two-fall configuration with a 5t maximum capacity or 239m in a four-fall configuration with a 10t maximum capacity. “Luffing the crane from the horizontal to vertical is efficient, taking less than two minutes, delivering optimum productivity on the job site,” said Manitowoc.
The MRH 175 is the latest release in Potain’s line of hydraulic luffing jib cranes, a product line the company has continuously developed since unveiling the MRH 125 a year ago.
“Manitowoc has championed this category of cranes, with dozens of models already delivered to a range of markets. Combining the advantages of Potain’s MR luffing jib cranes and MDT topless cranes, contractors find them particularly straightforward to assemble and disassemble on congested sites, making them ideal for urban projects, high-rise construction or job sites where space is limited,” said the manufacturer.