Tadano rough terrains for Europe
By Christian Shelton13 April 2021
Japanese crane manufacturer Tadano has launched the GR-700EX-4, GR-900EX-4 and GR-1000EX-4 rough terrain cranes for the European market. They have long boom designs with lift capacities of 70, 90 and 100 tonnes respectively.
The GR-700EX-4 has a 4.35-tonne counterweight package integrated into the upper carriage. A compact tail swing means it can work in tight spaces, said Tadano. It offers a 70 tonne lift capacity at a radius of 3 m and a 47 m boom length. The crane extends to a 35 m boom length in 142 seconds.
The 90-tonne class GR-900EX-4 has 9.1 tonnes of counterweight, which is self-rigged by the crane. With its two-position Smart Counterweight system the GR-900EX-4 offers a 1 tonne lift capacity at a 40 m radius with the counterweight in the forward position and a 1.2 tonne capacity at a 40 m radius in the rear position. The 47 m maximum boom deploys with synchronised boom extension of the third, fourth and fifth sections to a 35 m length in 155 seconds.
The GR-1000EX-4 has a maximum boom length of 51 m. The telescopic boom fully extends in 170 seconds. Its two-position Smart Counterweight system increases crane lift capacity at a 42 m radius from 0.9 tonnes in the forward position to 1.1 tonnes at the rear position when equipped with its full 11.2 tonnes of counterweight. The GR-1000EX-4 has an overall height of just under 3,805 mm.
All three models use a six-cylinder Stage V-compliant 209 kW engine provides a maximum 1,152 Nm of torque.
The range has been designed to be compact with a low height for ease of transport, said Tadano. The new RTs have round tubular boom construction for increased rigidity and to aid fast boom extension. Two synchronised telescoping system options are available. These shorten the extension time to maximum boom length to under three minutes for all three cranes, said Tadano. Their two-stage, bi-fold lattice jib increases lifting flexibility by extending boom length by 10.1 or 17.7 m and offer offset positions of 3.5˚, 25˚ or 45˚ from the main boom centre line. Assist cylinders aid jib installation and the jib stows along the base boom section when not in use, said Tadano.
All models are equipped with the Tadano View System, which combines cameras and sonar. Right front and rearview cameras help to increase work area visibility for the operator while driving. The operator monitors wire rope winding from inside the cab with the new standard winch drum monitoring camera. Integrated into the frame for protection, the rear “Clearance Sonar” is designed to detect obstacles behind the crane. It provides audible and visual alerts when an object is detected.
Camera feed are displayed on a 264-mm multi-function display touchscreen, which can display lift charts, crane configuration and operating settings. “Clearance Sonar” alerts are displayed on a dedicated display which sits on top of the Multi-Function Display. The pressure-sensitive screen allows operators to navigate through menus and change settings, even while wearing gloves. The instrument panel has been reconfigured for improved ergonomics, said Tadano. A lower panel height is designed to improve visibility at the front of the crane.
The new crane line has Tadano’s Smart Chart control system technology. Whether working with asymmetric or fully extended outrigger positioning, the system is designed to expand the working area from a standard circular cone to a square pyramid. On congested jobsites where outriggers cannot be fully extended, Smart Chart adapts lift capacity, based on boom and outrigger positioning.
Both the new 90-tonne GR-900EX-4 and 100-tonne GR-1000EX-4 have Tadano’s Smart Counterweight system, designed to increase crane flexibility and lifting performance. Front and rear counterweight position options allow the crane to be rigged for either a compact tail swing radius or higher lifting capacity. The new system increases crane lift capacity by up to 22 % and all “Smart” lift charts are visible on the in-cab display. The self-rigging capability of the counterweights reduces crane set-up time at the jobsite, Tadano added.
Entry into the re-designed cab has been simplified with a new three-step, angled extension ladder and door design that aligns with the steps, Tadano said. The crane’s new catwalk on the cab permits entry at any slewing angle. A 20 degree tilting function aids in reducing operator fatigue when working longer shifts. The cab also has an improved HVAC system and longer front and roof window wiper blades, Tadano added.
The new crane series’ fully automatic electronically-controlled transmission has six forward speeds – three high/low – and two reverse speeds. Four-wheel drive is available in both forward and reverse. The cranes has a maximum forward speed of 18 km/h.
The new Tadano rough terrain crane line is standard equipped with Hello-Net telematics. Critical operating functions such as crane operation status, location, configuration and maintenance information are captured and securely accessed from anywhere an internet connection is available, the company said. Tadano’s smartphone app, Hello-Data Link, is designed to connect the crane to mobile devices for access to real-time crane data.
The crane line has a newly-developed pump disconnect feature designed to automatically stop the crane’s hydraulic pump after idling for a set period to reduce fuel consumption.