- Since the launch of the Grove GRT655 and GRT655L rough-terrain cranes in 2017, they have proven a popular model on jobsites around the world because of their flexibility.
- Manitowoc offers the 60 t rough-terrain crane with two boom versions for different applications: the GRT655 with 34.8 m boom for heavy duty applications and the GRT655L with 43 m long boom for those applications where reach is a must.
- Here are just five reasons behind the success of these models.
1. The GRT655 and GRT655L offer high capacity and reach in a compact format
At 43 m, the Grove GRT655L has the longest boom in its class. With this long boom, the rough-terrain crane has the advantage that no additional jib is needed for long-distance jobs.
When working with a jib, operators can reach more than 56 m and nearly 60 m at maximum tip height. The standard boom version, the GRT655, has the strongest load charts in its class and is the preferred choice when extra capacity is needed.
Both models share light and compact carriers, weighing only around 35 t and measuring less than 3 m in width. Therefore, crane operators can drive into narrow spaces such as refineries, power plants and densely populated areas and access a greater variety of job sites.
2. The GRT655 and GRT655L are extremely easy to transport and maneuver
The narrow dimensions of either model – the most compact in their class – make the GRT655 and GRT655L easy to transport on a trailer and they can be shipped in one complete load.
In addition, when manoeuvring around a job site, operators benefit from all-wheel steering with a choice of four steering modes – two-wheel front, two-wheel rear, four-wheel crab and four-wheel coordinated. In coordinated mode, the crane has a turning radius of just 6.4 m, allowing it to access even the most congested sites.
3. Operation of the GRT655 and GRT655L is quick and intuitive
The Manitowoc Crane Control System (CCS) makes it intuitive to set up, control and command the crane.
This system is in common with all-terrain cranes, as well as truck-mounted and crawler cranes. Data is put into the CCS using a jog dial on the right armrest and/or the buttons on the two displays. This can easily be done even when wearing gloves.
The speed and ramp of each movement can be customized according to individual operator preferences. Many options are available for the less experienced to the most experienced operator, and advanced troubleshooting and diagnostics are provided onboard.
The GRT655 and GRT655L also offer very high single line hoist speed and pull, making them very productive cranes that complete the job quickly.
4. Comfort and visibility from the GRT655 and GRT655L cab is unparalleled
The GRT655 and GRT655L have a full vision cab with minimal blind spots. In addition, the cab can be tilted up to 20 degrees, helping the operator to stay comfortable and productive when working with the 43 m long boom or a jib on top of that.
The GRT655 and the GRT655L are the only 60 t rough-terrain cranes with a tiltable cab.
The effective heating and air conditioning system, with multiple vents to increase airflow, also helps the operator to stay focused and feel comfortable even on hot summer days. When entering and exiting the cab, flat decking on the chassis, grab handles around the cab and steps to access the crane on all four sides offer support, ensuring the operator can maintain a three-point contact with the crane at all times.
5. The GRT655 and GRT655L have a low total cost of ownership
The GRT655 and GRT655L include many features that reduce maintenance requirements and increase component service life. For example, by mounting the outriggers’ jack cylinders upside down, the chrome part of the cylinder and the seals are protected against sand, dust and general contaminants.
Furthermore, it has a hydraulic braking system instead of the industry’s pneumatic variety. For Grove rough-terrain cranes, this eliminates the need for a separate system and maintenance.
Finally, the ECO mode and hydraulic load sensing system reduce fuel consumption by up to 30% compared to older models. The hydraulic load sensing system sends oil only when it is needed, leading to less overheating, less wear and less fuel consumption. These savings combine to deliver a low total cost of ownership.