Flexible coupling GYRO FLEX

By fitting a flexible coupling between the gearbox and the propeller shaft, vibrations in the boat are largely eliminated. The flexible coupling ensures fewer vibrations and less noise to a great extent. The average noise reduction amounts to about 5 dBa, or up to 30%. Misalignment of the propeller shaft can also be compensated, with the result that gearbox and shaft bearing are less subjected to wear and tear.

High elasticity and free from lateral and axial clearance are the characteristics that dampen the engine vibrations.
The effect is even more noticeable at lower engine revolutions.
Contact noise is insulated to around 5 dBa, or up to 30%.
The flexible coupling compensates small misalignments, especially angular misalignments, thus ensuring less wear and tear on the gearbox and the shaft bearings.
The axial thrust of the propeller shaft, both forward and backwards, is transmitted to the thrust bearing inside the gearbox.
The connection with the propeller shaft is made by a cylindrical clamping box, so that further machining of the propeller shaft is not required.
The coupling is electrically insulating, therefore offering good protection against electrolysis.
Maximum misalignment error of the propeller shaft is permitted up to 2°.

Article code	For shaft	Diameter	For gearbox	Weight	Max. axial thrust	Torque (pleasure craft)	Torque (commercial vessels)
AI.030.22025	ø25	101 mm	ZF and PRM	2.1 kg	2.1 kN	280 Nm	175 Nm
AI.030.22030	ø30	101 mm	ZF and PRM	2.1 kg	2.1 kN	280 Nm	175 Nm
AI.030.24030	ø30	132 mm	ZF and PRM	3.9 kg	4.2 kN	560 Nm	350 Nm
AI.030.24035	ø35	132 mm	ZF and PRM	3.9 kg	3	560 Nm	350 Nm

Recommended Components

Flexible Inner Bearings

Mounting Flanges

Anodes

Propeller Shafts