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These Centaflex couplings and joint shafts have been specially designed for applications in boats and yachts, for the connection of reversing gears and propellor shafts.

- Torsionally elastic, backlash free, potentially damaging torsional vibration produced by the engine is dampened, especially at low speeds.
- Additionally, noise is dampened by up to 5 dBA, the rubber of the coupling does not lead the noise of the engine to the hull. Reduced vibrations protect allm parts of the unit in particular those of electronics.
- The couplings compensate for all types of misalignments, particularly angular, thus reducing wear on the shaft bearing and gearbox.
- The propellor thrust (or propellor pull in reverse drive) is transmiffed from the propellor shaft to the gearbox, or in the case of type CF-ACM it is transmiffed directly onto the hull of the vessel.
- The coupling is fastened to the plain cylindrical propellor shaft by means of a securely dimensioned clamping hub, thus expensive machining of the propellor shaft is not necessary. Length adaption is simple, and there is no weakening of the propellor shaft diameter caused by a bore or keyway.
- Simple assembly, with flange connection and hubs supplied fully machined for immediate installation. They can also be delivered with a suitable adaptor flange to mount to any nonstandard gearbox flange.
- The couplings are electrically insulating and therefore give protection from electrolysis camage.