ATTUATORE A COMANDO TRAMITE FLUIDO

摘要

A three-position hydraulic actuator (1) comprising an outer body (3) defining a cylindrical inner cavity (4); a dual-rod piston (20) sliding inside the cavity (4); a pair of stop rings (17, 26) mounted in respective central annular seats (16, 25) in the lateral wall (15) of the cavity (4) and on the piston (20); and a pair of bushes (29, 30) sliding in sealed manner between the piston (20) and the lateral wall (15) of the cavity (4) and located on axially opposite sides in relation to the stop rings (17, 26).