The hydraulic steering gear for the MARSILI encoding they are called “systems type A”.

The Marsili hydraulic steering gear systems meet perfectly the needs of motorized vessels of all types.

Very simple to install and built with materials which are resistant to the maritime environment.

A large range of piston helm pumps, hydraulic cylinders and accessories, allow a precise choice of  the most suitable equipment for each situation, the reliability and comfort are guaranteed.

The Marsili hydraulic steering gear systems are designed with an accurate attention to details, during the phases of production and test, aiming to obtain systems with high manoeuvrability, maintaining the characteristic smoothness of the hydraulic transmitters during the manoeuvre.

Usually, the hydraulic steering gear systems are made up of one or more hydraulic cylinders and one or more piston helm pumps.

These are “classic” steering systems since the ‘60s as a concept, but are now produced at a more advanced level both for the design and the material used.

Accessories for hydraulic steering gear

To the manual hydraulic steering gear systems can be added accessories and components even at a later stage, such as electrohydraulic power packs for autopilot.

Thus, the systems type “A” are mainly composed of:

Hydraulic Cylinder

It is the most important element in a steering gear control system.

The cylinder is usually sized correctly by our technical office depending on the characteristics of the vessels and specifically depending on the torque exercised on the rudder, trying also to meet the customer’s demand both for the dimensions and the aesthetics.

The cylinder can be supplied with a suitable tiller for connection to the rudder stock.

Helm Pump

It consists of a pump with axial pistons which withdraw and push the oil contained in the hydraulic system while the helm pump is manoeuvred by the steering wheel.

The cubic capacity determines the total turns that the wheel must do for a complete manoeuvre from hardover to hardover.

The pump is equipped with a non-return valve which does not allow the rudder to move freely when nobody is holding the wheel.

Tubing and Fittings

The tubing must be sized correctly depending on the cubic capacity of the helm pump.

MARSILI can supply 5/16” and 3/8” standard flexible hoses.

Other dimensions are supplied on request depending on the length required.

We recommend rigid tubing for working vessels for which MARSILI can supply suitable fittings.

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