Ship unloaders are the traditional method to unload bulk materials and these cranes are used when high quantities of coal, iron ore and other bulk materials are to be handled.
Gantry type grab unloaders incorporate a hopper that feeds the bulk materials direct to a conveyor belt system. The hoppers can be equipped with spraying devices or suction systems to minimise dust emmissions.
Ship unloaders are often supplied with a 90° grab-rotating system, so the grab can work with
a longitudinal opening direction as well as with a transversal (cross) direction. Grabs must
be specially designed to work with a rotator system.
The (rail mounted) unloaders are designed for handling large amounts of bulk materials.
Short cycle times in combination with high capacity clamshell grabs offer high unloading rates and high efficiency. Free digging rates of 3000 tph are no exception.
Ship unloaders are normally used for handling materials like coal, iron ore and bauxite. Verstegen grabs for ship unloaders are available for capacities from 20 ton up to 85 ton.
