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A gearbox makes it possible to change the direction of rotation of the propeller. allpa offers numerous gearboxes of the Technodrive brand. There are two series of different types of gearbox: the TMC-and the TM-series. The TMC-series are gearboxes of the mechanical type, TM-type gearboxes are of the hydraulic type.
Technodrive gearboxes especially for ships are equipped with conical clutches mechanically operated, actuated by a servo-system. Gears are especially constructed for quiet operation and bearings are amply proportioned. These mechanical gearboxes work best with right-hand-rotating propellers. In case of left-hand-rotating propellers the reverse-position can be used as forward. The maximum power the gearbox can handle in these cases is reduced. Technodrive ships-gearboxes of the TM-type are equipped with hydraulic multiple clutches. These gearboxes are hardened and cemented and their performance forward and reverse is identical.
Technodrive’s Seaprop Saildrive is developed to be able to handle more torque than most other existing systems. This makes Technodrive’s Sea Prop very suitable for modern and powerful ships diesel engines. For this system several accessories are available, e.g. anodes made from different materials, like zinc, different types of propellers and a water alarm.
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