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Terex® AC 55 city And AC 100/4 REPLACE TRUCK SCALES
IN TANDEM LIFT OPERATION
ZWEIBRÜCKEN, 6th August 2010 – With the help of two Terex® cranes, the Kran Saller team was able to easily handle a challenging task in the Bavarian town of Passau: two gigantic truck scales, each weighing 43 metric tons (47 US tons), had to be replaced at a waste management company’s facilities.
The most difficult part of this job was a tandem lift that had to be partially performed under a projecting roof with a height of only 5m (16 feet), making the assignment even more difficult. In addition, the area immediately surrounding the truck scales had a maximum width of approximately 4m (13 feet), resulting in extremely tight working conditions.
Every crane operator knows tandem lifts are always challenging. After all, they require two cranes to be controlled in a coordinated manner. Due to the difficult conditions at the site, the team decided to rely on two cranes manufactured by Terex – more specifically, the Terex® AC 55 City and the Terex® AC 100/4. The Terex® AC 55 City in particular proved ideal for the task, as its flexibility and compact design come with an extraordinarily low center of gravity that enables the unit to generate powerful lifting forces under any operating conditions.
The Terex® AC 55 City was in charge of lifting the truck scales approximately 1 meter [3 feet] from the floor while in a laterally offset position. The challenge? The crane boom had to be telescoped while under load. “That’s the crucial advantage of the Terex® AC 55 City: it can do this even at a flat boom angle, which was exactly what we needed for this particular assignment,” explains crane operator Benjamin Bretzendorfer. Meanwhile, the Terex® AC 100/4 was in a much more favorable position. It was able to work on the opposite side, perfectly aligned with the scale, in order to lift the heavy weight in tandem with the Terex® AC 55 City. However, the lack of space meant that it could only use half of its support base for this purpose.
Once the truck scales were lifted off the floor, they were swung out to the side underneath the projecting roof and were then lifted again so that a semi-trailer could be moved under them in order to remove them from the premises. The end result? The Terex® crane duo made it possible for the Saller Team to quickly and safely replace the two truck scales to the satisfaction of the customer, who was able to keep production downtimes to a minimum thanks to the team’s efficiency.
The Terex® AC 100/4
With a lifting capacity of 100 metric tons [120 US tons] and a maximum load moment of 308 mt, the Terex® AC 100/4 is the most powerful four-axle crane in the world. Its five-section telescopic boom provides for a system length of up 50 meters [164 feet], which can be further extended to 77 meters [252 feet] with a main boom extension. More importantly, perhaps, the main boom’s extension system sets new standards in terms of variability: the unit’s main boom extension can be offset on either the main boom or on the 8-meter [26-foot] extension. Finally, a width of only 2.55 meters [8.37 feet], a total length of 34.1 feet [10.4 meters], and four steerable axles make the Terex® AC 100/4 an ideally flexible machine capable of dealing with all types of assignments.
During the crane’s development phase, cost-effective operation was just as much of a priority as sheer performance, and was achieved with state-of-the-art Daimler technology (among other things). More specifically with a 455-PS [448-hp] engine responsible for travel and a 175-PS [172-hp] motor for the crane.
The Terex® AC 55 City
The all-terrain Terex® AC 55 City crane, with a maximum lifting capacity of 55 metric tons [60.5 US tons], is characterized by a number of outstanding features, not least of which is a system length of 54 meters [177 feet]. In fact, a total length of 60 meters [196 feet] can be reached with the optional connector for the main boom extension.
This achievement is all the more remarkable when taking into account the vehicle’s total length – a mere 9 meters [29 feet]. The unit’s compact dimensions provide for extraordinary flexibility when working in constrained spaces, as well as for exceptional off-road maneuverability. A 321-hp Daimler engine functions as the crane’s drive, allowing for a maximum road speed of 85 km/h [53 mph] while ensuring cost-effective operation characteristics.
Headquartered in the eastern Bavarian town of Deggendorf, Kran Saller has been active in the region for over 50 years. Its fleet and portfolio of services have seen a process of continuous expansion since the company was originally founded in 1959, making Kran Saller GmbH the professional and efficient partner it is today. The company’s services cover the following areas: crane rentals, rigging, heavy goods handling, crane logistics, heavy load and special load transportation, forklift and aerial work platform rentals, provision of test weights, machine relocation, vehicle recovery, and project planning. Kran Saller’s 80 employees, distributed across six locations, are also responsible for completing lifting and transportation projects in a thoroughly professional and timely manner.
Terex Corporation is a diversified global manufacturer operating in four business segments: Terex Aerial Work Platforms, Terex Construction, Terex Cranes, and Terex Materials Processing. Terex manufactures a broad range of equipment for use in various industries, including the construction, infrastructure, quarrying, mining, shipping, transportation, energy, refining, and utility industries. Terex offers a complete line of financial products and services to assist in the acquisition of Terex equipment through Terex Financial Services. More information on Terex can be found at www.terex.com.
The Terex® AC 55 City had to lift the 43-tonne truck scale while laterally offset and with a nearly horizontal boom angle.
Perfect teamwork: the Terex® AC 55 City and the Terex® AC 100/4 performing a tandem lift operation.
Once the truck scales had been swung out underneath the projecting roof, a semi-trailer was moved under them in order to remove them from the premises.
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