Outreach Marine Telescopic Vessel Deck Crane. Description: The TB series crane is designed as an electro-hydraulic driven Telescopic Boom Crane, with integrated electro-hydraulic power unit, delivered as aplete unit ready for installation to e crane is equi, hydraulic operated luffing and hydraulic operator extension and hydraulic …Product description . OUCO Marine/Offshore Telescopic boom cranes are based on a pedestal slewing design with hydraulic cylinder luffing. The boom extension is a telescopic inner section that allows a more flexible and wider operational radius in use and leaves the crane stored in apact position.Hydraulic Knuckle Boom Marine Crane - Factory, Suppliers, Manufacturers from China. We hold strengthening and perfecting our items and repair. At the same time, we get the job done actively to do research and progress for Hydraulic Knuck For Ship, Boat Anchor Windlass, Electric Capstan, Swing Slewing Motor Gear ...Dec 24, 2021 · For a 25-ton crane, the maximum full-load lifting speed is in the range ofm/min, and the slewing speed is again in the range of 1-2rev/min. Ateases by two to three times. Drive mechanism and safety functions. In electric and electro-hydraulic cranes, the crane is usually found to rotate on roller bearings.