The motor Hydraulic dual scoop Clamshell Grab is specially designed for charging and discharging bulk materials and is to be fitted on cranes with one single drum (ship cranes). There are electrical motor and hydraulic pump inside the grab. The closing/opening of the grab depend on the double acting hydraulic cylinders. but the ships cranes have to be executed with accessories such as cable reeling drum, stabilizing rope drum etc . and the price is high.
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