Reduction gearbox for ships A Friedr Flender

Marine single input/single output gearboxes are used in river boats and coasting vessels, but also in ocean-going vessels.

Depending on the ships' requirements, they can have either vertically or horizontally but also diagonally offset shafts.

Frequently, a PTO (Power Take Off) is provided to generate inexpensive on-board current. Optionally, the generators can be driven secondarily or primarily, depending on necessity. Furthermore, solutions ensuring PTH (Power Take Home) operation are available. This requirement gains more and more importance, e.g. for vessels carrying dangerous media.

As standard, all gearboxes are equipped with an oil supply system on top and a monitoring system (for unattended operation).

The gearboxes cover a power rating range from 1,000 to 30,000 kW for speed reducing ratios from 1.5 up to approx. 12:1. The propeller shaft thrust bearings are fitted into the gearbox. Accordingly, the housings are of torsionally rigid design, which also ensures perfect meshing of the gear teeth under any condition, even during bad-weather journeys.

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