On account of their compact design, Drum Gear Coupling have been preferably used in the past. Gear coupling feature a comparatively high power transmission capability and are able to compensate alignment faults during installation (angular misalignment, radial offset) and during service. Here you have to particularly take into account that the resulting reaction forces which have an impact on the gas turbine and/or the plant components are decisively influenced by the lubrication condition of the coupling.
In contrast to other coupling types, Flexible Pin Gear Coupling are relatively insensitive to torque shocks which may occur, for instance, when a plant is started or stopped.
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