PNEUMATIC CYLINDER WITH DAMPER SLEEVE

摘要

A pneumatic cylinder (100) comprises a piston, axially mobile inside a casing. The pneumatic cylinder comprises at least one damper sleeve (10) suitable to reduce the intensity of the impact that occurs when the piston (20) arrives in abutment against the head (104, 105) of the casing. The damper sleeve (10) is provided with a front portion (14) provided with a plurality of through holes (60), extending in a radial direction, and a tapered wall (143) with a wall thickness which decreases toward a front end (144) of the damper sleeve (10). When the piston (20) approaches the end-stroke position, the pressurised air escapes towards the duct (108) through the holes (60) and a vent space (80) defined between the stem (21) of the piston (20) and an inner wall (141) of the front portion (14) of the sleeve (10).