Fast luffing job crane performer

First published in CONEXPO-CON/AGG Preview News - February 20, 2020

WOLFFKRAN is now offering a version of its proven 166 B luffing jib crane for the US market

WOLFFKRAN is now offering a variant of its proven 166 B model luffing jib crane in the North American market. The crane is compliant to US electrical standards and all US requirements regarding structural components, naming it WOLFF 166 B US.

Unlike conventional luffing jib cranes with a winch driven luffing gear, the WOLFF 166 B US is fitted with a compact hydraulic luffing mechanism. This eliminates the tower top and reeving of the luffing rope, making both transportation and assembly more efficient. The hydraulic luffing design also allows for a smaller out-of-service jib position, which is important on city sites.

The WOLFF 166 B US offers a maximum load capacity of 12tonnes in 2-fall operation and 6tonnes in 1-fall operation. The jib line-up ranges from 25-55m and can be extended in 5m increments. With a 50m jib it achieves a tip load capacity of 3.35tonnes.

Equipped with a 60kW hoist winch the WOLFF 166 B US offers a hook path of 500m and line speeds of up to 174m/minute in 1-fall operation. It can be built up to a free-standing tower height of 93.2m due to the modular WOLFF tower system.

The hydraulic luffing cylinder with load sensing control automatically regulates the luffing speed according the load which results in a luffing movement from maximum to minimum jib radius in only 90 seconds with a 22kW motor. The on-site connected power requirements are 91kVA from a 480V supply.

Both the hydraulic cylinder and the hydraulic unit are installed in the connecting block as a compact unit. The hydraulic lines do not need to be disconnected for transport and assembly, saving erection time. The connecting block can either be lifted onto the tower alone or as a pre-assembled unit together with the slewing frame and lower section of the tower top.

The hoist winch of the WOLFF 166 B US is positioned on the jib allowing pre-reeving of the hoist rope on the ground prior to installation and offering access for maintenance.

The WOLFF 166 B US is fitted with the latest WOLFF cabin. The cabin platform with the cabin and switch cabinet comes pre-assembled as a single unit ex-works and can be attached to the crane in just one step.

Further standard features facilitating safer and more efficient operation include the remote data transmission system WOLFF Link, an anti-collision interface for all major anti-collision systems, a working range limitation and central lubrication of the slewing ring.