The new unit has been uprated from 6t capacity single fall/12t capacity double fall, the new model has a lifting capacity of 8t/16t. The company said that demand from the construction industry for higher high-rises has increased demand for large luffing-jib tower cranes. The standard hoisting gear is driven by a 60kW motor; a 75kW motor is an option.
The jib has been redesigned to build up in 5m steps, from minimum 30m length to 60m, 5m greater than before. With 60m jib, the crane can lift 8t out to 26.5m radius, and 1.6t at the end of 60m jib. In double-fall mode, the crane jib can be built out to 50m, at which it can lift 3.7t. It lifts 16t to 16.5m radius.
The company has also moved the hoist gear from the jib foot to inside the jib section. Now the hoist rope reeves through the jib section, so the load-sensing pin is more accessible and easier to service than before. It has also reduced the amount of counterweight on the crane, and increased the size of the hoist winch spool to store 600m of wire rope. Like other Wolff models, it now uses the KWH 20.3 crane climbing gear and is controlled by a BUS computer network, which can be accessed remotely using a teleservice module.
The company is planning to apply these improvements to larger pre-existing models in the range.
