The Mechanical Single-Rope Grab, also called Touch-Down Grab, is especially designed for cranes (like ship board cranes) with a single cable drive. A mechanism on the grab, locks/unlocks the grab to open or close each time it touches the ground. This system is mostly prefered, if there is only one cable available.
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The Mechanical Two-Rope grab is used to handle various kinds of fine and granular bulk material, mainly with cranes that have two cable drums. The design is tailor-made and depending on customer specified details in order to fit overall weight, required structure, payload ratio, filling degree and digging force as well as environmental regulations at ports or other plants.
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The Mechanical Four-Rope grab is used to handle various kinds of fine and granular bulk material. The design is tailor-made and depending on customer specified details in order to fit overall weight, required structure, payload ratio, filling degree and digging force as well as environmental regulations at ports or other plants.
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The Mechanical Hand-Tripped Grab (Hand-Pull) has a mechanism with one rope for lifting/lowering the grab from the crane and one rope to open the grab manually (pulled by hand) by an additional operator on the ground, pulling it at discharge destination (mid-air opening).
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