A double-acting cylinder comprising:
- a cylinder housing having an inner wall and defining a cylinder bore extending along an actuation direction of the cylinder with the cylinder bore having opposing ends delimited by respective first and second cylinder caps;
- a first floating piston comprising first and second sections with a circumferential length of the first floating piston in a plane extending perpendicular to the actuation direction of the cylinder greater in the first section than in the second section;
- a second floating piston comprising first and second sections with a circumferential length of the second floating piston in a plane extending perpendicular to the actuation direction of the cylinder greater first section than the second section;
- a central piston having an inner wall and movable to three stationary positions along the actuation direction of the cylinder,
- wherein a movement of the first floating piston in the cylinder bore along the actuation direction of the cylinder is delimited towards the second floating piston by a first end stop arrangement, a movement of the second floating piston in the cylinder bore along the actuation direction of the cylinder is delimited towards the first floating piston by a second end stop arrangement, and a movement of the central piston in the cylinder bore along the actuation direction of the cylinder is delimited by the first and the second floating pistons;
- a first seal arranged in the first section of each of the first and second floating pistons for a sealing engagement with the inner wall of the cylinder housing;
- and
- a second seal arranged in the second section of each of the first and second floating pistons for a sealing engagement with the inner wall of the central piston,
- wherein the movement of the first floating piston in the cylinder bore along the actuation direction of the cylinder and away from the second floating piston is delimited by the first cylinder cap, and the movement of the second floating piston in the cylinder bore along the actuation direction of the cylinder and away from the first floating piston is delimited by the second cylinder cap,
- wherein the first end stop arrangement is attached to the first cylinder cap, and the second end stop arrangement is attached to the second cylinder cap,
- wherein each of the first and second cylinder caps comprises a guiding section extending from the respective one of the first and second cylinder caps towards the central piston and spaced from the inner wall of the cylinder housing,
- wherein the first end stop arrangement is formed by a protrusion arranged at the guiding section of the first cylinder cap and the second end stop arrangement is formed by a protrusion arranged at the guiding section of the second cylinder cap, and
- wherein the first seal of the first floating piston is arranged for the sealing engagement with the inner wall of the cylinder housing, and the first seal of the second floating piston is arranged for the sealing engagement with the inner wall of the cylinder housing constantly over an entire length of the bore.