Harken B 1140 LH RACING, Manual

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B1140 Winch 23
Weights
The outline of the various versions is available in DWG format and can be requested from Harken Italy Tech Service by
e-mail: techservice@harken.it.
Electrically powered winches take up far more space below decks than their hydraulically operated equivalents. This is
because electric motors are bigger than hydraulic ones, because a reduction gear is needed between the motor and the
winch, and because a special extension flange has to be used on one of the two motors to connect the reduction gear to
the winch since there is physically not enough room between the two shafts.
Further information will be supplied on request.
Table 8
Both hydraulic motors need to be connected to a hydraulic circuit by two high pressure tubes that are used for inlet and
outlet, according to the direction in which the motor is running. Both motors also require a third connection with a low
pressure tube for drainage, so that excess oil can return to the system reservoir so as to avoid shortening the life of the
motor.
Backwind is engaged by a special motor, separate from the one connected to the central shaft and connected to a
secondary gearing through a reduction gear.
The backwind button, when pressed, will activate an electric valve in the hydraulic circuit that will direct the flow of oil to
the backwind hydraulic motor. Obviously the oil will return from the motor to the system reservoir. The backwind hydraulic
motor runs in one direction only and also needs a closed centre valve so that the flow from the motor is blocked when the
valve is not operated.
However, the motor connected to the central shaft of the winch, which makes the drum revolve in one direction only
(clockwise
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for a right-hand winch and anticlockwise for a left-hand winch), will operate in both direction so as to
allow the winch to operate at the three speeds for which it was designed. This motor can use both a closed centre valve,
which is generally preferable, or an open centre one.
Winch Winch Winch
B 1140 ST ASA B 1140 ST ASA B 1140 ST RACING
hydraulically with 380 V electric hydraulically
powered motor powered
Estimated weight 134 Kg 217 Kg 113 Kg
Technical information on hydraulic motor
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Dimensions