A machine for processing components (2) of wood or the like is provided with at least one support block (10) defined by a bottom slide (11, 13) movable along a cross member (8) and a top plate (18) which defines a support plane (P) for at least one component (2), is mounted on the bottom slide (11, 13) to move between a lowered position and a raised position, and is connected to a pneumatic suction device by means of a pneumatic circuit (21) having a flexible feed line (23), which is coupled to the bottom slide (11, 13) and to the top plate (18), and is housed inside a cable-holder chain (26).
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