Manitowoc Cranes' newest addition to its rough-terrain crane line, the Grove RT9150E, has a 150-ton (136-t) rated capacity and a 197-ft (60-m) main boom, which it claims is the longest on any current production rough-terrain crane. Doyle Bryant, Director of Product Marketing for Manitowoc, said that the available length of main boom allows the RT9150E to "reach places that previously required a jib."
According to Bryant, the RT9150E is essentially an amalgam that consists of the upperworks of a Grove GMK5165-2 all-terrain crane and the lowerworks of the 130-ton (118-t) capacity RT9130E rough-terrain crane, resulting in a high-capacity crane sitting on a compact carrier.
“There will be a lot of applications in refineries, power plants, and other large projects where space is often tight, so the compact carrier gives the crane additional value,” he said.
For a lighter, though stronger, main boom, the RT9150E features Grove’s patented TWIN-LOCK pinning technology. When working with the boom, operators can achieve a maximum tip height of about 209 ft (64 m). Maximum radius with the main boom is 180 ft (55 m) and at this distance the crane can lift 3800 lb (1724 kg).
A 36 to 59 ft (11 to 18 m) bi-fold lattice swingaway extension offers farther reach, with fixed offsets of 0, 20, and 40°. When working with this jib, the RT9150E can reach a maximum tip height of 267 ft (81 m) and a maximum working radius of 220 ft (67 m), where capacity is 2000 lb (907 kg).
To reach the maximum tip height, users will need two additional inserts, one 26 ft (8 m) and the other 20 ft (6 m), which fit between the boom nose and the bi-fold swingaway. Adding these extends the maximum tip height of the crane to 312 ft (95 m), while taking the maximum outreach to 220 ft (67 m), where capacity is 2770 lb (1256 kg).
Grove says the RT9150E is its strongest rough-terrain crane. When working with its full standard counterweight of 39,000 lb (17,690 kg), the crane has a lift advantage of almost 60% over the next model in the line.
The RT9150E has a chassis length of 32.25 ft (9.8 m) with the outriggers attached, or 26.5 ft (8 m) when removed. Overall length with the boom stowed is 49.8 ft (15.2 m), width is 12.5 ft (3.8 m) and overall height is 13.67 ft (4.2 m). It has the same gross vehicle weight as the RT9130E, 174,000 lb (78,925 kg).
For ease of set-up and tear-down, the crane can easily remove and install its outrigger boxes. Also, the 39,000 lb (17,690 kg) of standard counterweight, plus the optional additional 24,000 lb (10,886 kg), can also be hydraulically installed and removed.
The RT9150E features a new operator’s cab, the first from a new generation of Grove cabs that it says were designed to offer better visibility and comfort. The “full vision” design incorporates more glass, including in the sliding door. The cab can also tilt up to 20° for operator comfort and visibility.
The control panel features Grove’s EKS5 load moment indicator and ECOS electronic controls. As well as managing and monitoring the crane’s major functions, ECOS also provides feedback on a variety of conditions, including fuel level, low brake pressure, hydraulic oil temperature, transmission oil temperature, and engine stop.
Manitowoc is offering a choice of engines for the crane. A Cummins QSC8.3L engine with a 300-hp (224-kW) rating is available for customers in the U.S.
The engine drives a Clark powershift 6F/3R transmission. Four-mode steering and driving is offered (as it is with all Grove rough-terrain cranes) allowing operators to choose between front-only, rear-only, crab, and coordinated options.