Wolffkran debuts new flat top model

The new WOLFF 6523 Clear is the first WOLFF crane that is technically designed for the new High-Speed Positioning system, the company said.

Wolffkran has unveiled a new addition to its crane portfolio with the 224 tonne-metre Wolff 6523 Clear. The new flat top is based on the popular 6031 Clear, which is among Wolffkran’s best-selling cranes with its flat top design, its proven lifting capacities and its ease of assembly, the company said. In addition, the Wolff 6523 Clear offers a patented, newly designed jib and its technical equipment for operating the Wolff High-Speed-Positioning-System (HiSPS).

Instead using a bolt connection, the jib sections are mounted on the front with a mandrel and wedge connection.

The HiSPS assistance system was introduced at bauma in 2022. Sensors on the trolley and hook block together with a control unit enable the load to be transported free of load sway by detecting the rope’s movements and automatically adjusting the movement and speed of the crane to it. Since the trolley always adjusts its position automatically via the hook block, not only is the wind impact eliminated, but it also prevents a diagonal pull on the load, making pushing the load by hand and pulling the hook manually easier and safer. The 6523 Clear is the first Wolff on the market with the technological prerequisites to activate HiSPS. It is an option that can be acquired when purchasing the crane.

In addition to being technically prepared for installation of HiSPS, the redesign of the jib of the crane includes several other features. The bottom chord connection of the jib sections has been re-developed with a patented design. Instead of using bolts, the jib sections, including the rope swivel traverse, are mounted on the front with a mandrel and wedge connection. In turn, in the top chord, the pins are now inserted into the pear-shaped holes, which enables far easier assembly without a hammer.

“This new development also provides advantages during crane operation,” said Dr. Mohamed Abouelezz, head of product management and business development at Wolffkran. “Thanks to the smooth jib transitions, trolleys equipped with lateral guide rollers run more steadily and smoothly along the jib. This makes it easier to finely position the load, even without using the High-Speed-Positioning-System.”

The new WOLFF 6523 Clear is the first WOLFF crane that is technically designed for the new High-Speed Positioning system, the company said.

The new crane also has a 45 kW hoist winch. It lifts a maximum of 8.5 tonnes in 2-fall operation with a jib length of 30 metres and 12.5 tonnes in 4-fall operation with a reach of 21.5 metres. At a maximum jib length of 65 metres, the new Wolff has a tip load capacity of 2.3 tonnes in normal operation and 2.5 tonens with the activated Wolff Boost function. The jib can be extended from 30 to 65 metres in 2.5-metre increments.

The Wolff 6523 Clear will mainly be sold in the DACH region. A version with a maximum payload of 10.5 tonnes in 2-fall operation as well as a U.S. version are being planned.