Mechanical Couplings

This new flexible coupling from EP combines the best features of the well-known UNIFLEX and BULLFLEX models at a lower price.
The Combiflex coupling has been designed to ensure optimal damping of torsional vibrations, created by cycle irregularities especially at low revs.
The flexible rubber element ensures low-noise and vibration-free transmission, without backlash between the engine and the propeller shaft.
The Combiflex coupling is secured against shearing off, both axially and radially, thus ensuring safe transmission under all circumstances.
The Combiflex coupling also provides excellent alignment of the propeller shaft.
Perfect alignment of engine and propeller shaft can be a rather time consuming affair, but the Combiflex comes to the aid of the installation engineer.
Even with a misalignment of 2 degrees, the shaft will remain perfectly centred onto the gearbox flange.
The parallel clamping hub ensures easy installation and probably even more importantly, easy dismantling of the shaftassembly.

A flexible coupling provides a flexible connection between the shaft and gearbox. This will reduce noise and vibration on board and is damping torsional vibrations.Blokflex couplings
Blokflex flexible couplings are manufactured according to our high quality standards. Loads can be transferred from different directions (both radially and axially). The flexible couplings are capable to transmit the propeller thrust to the gearbox. The construction of the coupling is fail-safe and ensures a long service life.

In case of the smaller coupling sizes (type 115-4 and 150-4), the aluminum housing is machined fit to the gearbox flange. The standard version comes with a straight bore and keyway. Larger types (160-6 and bigger) are using a separate steel adapter flange (spacer). This adapter is available for e.g. ZF/ Hurth/Velvet, PRM and Paragon gearboxes. Standard type 160-6 and bigger couplings come with a taper bore (1:10) and keyway.

Shaft Couplings Clamps to give a better fit than a solid coupling. Produced by high quality steel. Able to accommodate normal shaft tolerances. Available in standard sizes (Both Metric and Imperial). Easy to install and position. Baysan Marine has developed a comprehensive range of Steel Clamp Half Couplings with flange sizes from 4 to 6 inch diameter. Steel Clamp Half Couplings can accommodate the variations that occur with normal shaft tolerances, are easy to install and can be adjusted to the required position on the shaft. Capacity to machine Split Half Couplings to special sizes.

Rubber Couplings

Rubber couplings consist of a rubber spacer sandwiched between two hubs. The rubber does a good job of absorbing shock and vibration, as well as misalignment. Rubber couplings can be designed specifically to compensate for compression or shear force. They also introduce torsional softness. As a result, they can be effective at protecting bearings.

Gear Couplings

Gear couplings are designed to handle extremely high torques. A gear coupling consists of a forged sleeve with internal gears and a pair of shafts terminating in hubs with external gearing. The shafts/hubs are inserted into the sleeve from opposite directions; turning one hub rotates the other. The high surface contact area enables gear couplings to manage extreme torque loads. Like any gearbox, they need lubrication. They also suffer from backlash that varies according to tooth shape and misalignment. If designed with a tight fit between the inner gear and outer gear, gear couplings can be effective at speeds as high as 30,000 to 40,000 RPM.

Bellows Couplings

As the name suggests, a bellows coupling is built around a metal bellows. These couplings deliver maximum torsional stiffness and flexibility but remain lightweight, minimizing inertia. They are good for applications that need to transfer high torque with minimum backlash.

Bellows couplings perform well at speeds of up to 10,000 RPM. The material used for the bellows depends upon the application. Steel designs deliver maximum torque per diameter. Nickel versions provide better accuracy but they are more fragile and must be used with lower torques.