Marine products offered by Servogear A/S


	Servogear A/S

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EFFECT RUDDERS

Our effect rudder is a part of our controllable pitch propeller (CPP) system, and is designed as an airfoil, providing a lift in the water flow, which again produces a forward thrust. This results in a minimum drag on the rudder.

GEARBOXES

Servogear supplies reduction gearboxes as an integrated part of our controllable pitch propeller system. Our special gearbox design offers advantages and possibilities, especially if space is a limitation.

PROPELLER TUNNELS

Conventional propulsion systems, such as propellers or water jets, work most efficiently in open water conditions. In Servogear we develop tailor-made propeller tunnels as a part of our controllable pitch propeller system, to provide greater propulsion efficiency below a hull than in open water. The propeller tunnel itself also reduces hull resistance.

Our propeller tunnel allows for larger propeller diameter with no increase of shaft angle and draught. Propeller rpm is reduced, as well as the surface pressure on the propeller blades, and the water flow entering the propeller is optimised. Together with other detail improvements, this provides the best possible working conditions - resulting in a smooth and efficient propeller thrust.

A more even loaded propeller gives a slimmer and lighter design, which means less weight and drag as well as higher efficiency. We calculate and design our propeller tunnels based on full utilisation of the flow below the hull, ensuring optimum interaction between hull and propulsor. Efficient propulsion means lower fuel consumption, more economic operation and less pollution.

PROPELLERS

Servogear Ecoflow PropulsorTM is a unique controllable pitch propeller (CPP) system for high-speed workboats, fast ferries, offshore vessels and yachts. The concept offers an optimal combination of speed, bollard pull, manoevrability and fuel efficiency. Learn more about CPP here (Kasten Marine Design).

Through continuous theoretical and practical research since 1973, we have developed an incredibly efficient propeller system. These are successfully running on a large number of vessels worldwide. Search in our selected references catalog here. 

The Servogear CPP system covers an engine range of 400 to 4000 kW and speed up to 50 knots.

SHAFT BRACKETS

Due to design and location, the shaft brackets in the Servogear controllable pitch propeller system causes minimum drag and resistance. They also ensure no cavitation and improved steering performance.

The brackets are of heavy-duty single leg design. They are cast in high tensile stainless steel and NiAlBz. Servogear shaft brackets are also designed with progressive strength. This means that the section modulus of the bracket leg is decreasing from the hull intersection to the bracket barrel. Should a severe grounding occur, the bracket would deform as a “J” – avoiding serious damages like cracks and leakages in the hull. This is an important safety feature. Normally, the shaft brackets can be straightened easily – without the need for replacements.