(57) A hydraulic distribution unit (2) for controlling the actuation of a bush cutter,
comprising a high flow-rate distribution unit associated with a rotary mower and a
low flow-rate distribution unit associated with a positioning arm of the rotary mower;
the distribution units have respective intake ducts (4,7) which are supplied by a
high flow-rate pump and by a low flow-rate pump and respective discharges which lead
into a common reservoir for collecting the oil; the distribution units are suitable
to feed, by means of a pair of delivery manifolds (5,6), a motor for actuating the
rotary mower and, by means of a series of pairs of delivery manifolds (8,9), a piston-type
hydraulic servomechanism for mutually opposite movements of the positioning arm, the
high flow-rate and low flow-rate distribution units being provided as a single body
which has a first portion (2) dedicated to the actuation of the rotary mower and a
second portion (3) dedicated to the actuation of the positioning arm.
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