High-pressure hydraulic
The system and products are well known, reliable and easy to install, typically comprising of winch motor and power pack operating between 200 and 280bar as part of an open loop system. One pump can supply a number of winches or other hydraulic devices. Alternatively, the winch can be powered from the vessels central hydraulic system, removing the need for a dedicated power pack.
The hydraulic motor can be either single or variable displacement, the latter providing faster winding speed in no-load situations. Control valve design makes it possible to fully control hauling and rendering speeds in all conditions, including step-less control of tension and speed.
Low-pressure hydraulic
The low-pressure hydraulic is originally designed for heavy winch operations in marine environments. Through more than 70 years of experience the feedback from our end users have been that low-pressure hydraulic winches are exposed to minimal risk for off hire, caused by total breakdown.
The system has the market’s highest focus on safety and lifecycle cost. It is robust, reliable and easy to install. The winch motor and power pack operates at very low noise as part of a constant flow system at max 64bar, with variable pressure depending on the flow requirements of the winch.
The vane type winch motor provides step-less speed control and automatic speed selection with full starting torque. Its three-chamber design allows an increase line speeds in light line situations by up to three times with full hydraulic control. All parts are based on in-house technology.
Electric frequency controlled
The latest in winch drives for quiet operation and simple installation, comprises an AC electric motor and, starter and control stand so installation can be done later in the building process. Installation costs are kept low, as only one cable is required per motor (a saving of 50 per cent in cable weight and 30 per cent in cable length compared to the pole changing motor).
The virtually maintenance free motor has standstill heating, temperature sensors and fail-safe brake and is designed to operate in all climatic conditions. Winch speed is controlled by voltage frequency, which provides smooth, step-less control of mooring lines and anchor chain. Anchor nesting is simple due to excellent low-speed performance. Windlasses can be equipped with remote anchor lowering systems, making the lowering of anchors as simple as pushing a button.
Electric pole changing
Reliable, quiet and simple to install, comprises electric motor and, starter and control stand so installation can take place later in the building process. The motor has three speeds, which are used at different stages in the cycle. High slack rope speed is used in no-load conditions. Normal speed is used in mooring and anchoring and for normal hauling in and out, with slow speed and nominal torque used for anchor nesting.
The main advantage of an electric system is that the winch is available for immediate operation, as there is no warm up time, and it is independent of weather conditions.
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