Fluid pressure cylinder

A fluid pressure cylinder comprising:

• a cylinder tube and a cover member fixed to an end of the cylinder tube, the fluid pressure cylinder including a pressure chamber formed between a piston and the cover member;
• a port configured to supply and discharge a pressure fluid to and from the pressure chamber, and a cushion hole configured to connect the pressure chamber and the port, the port and cushion hole being provided in the cover member;
• a tubular cushion ring attached to the piston or a piston rod so as to be insertable into and withdrawable from the cushion hole as the piston moves;
• a cushion packing having an annular shape and configured to slidably contact an outer circumference of the cushion ring, mounted in a mounting groove formed on an inner wall of the cover member constituting the cushion hole, the cushion packing being configured to be movable in an axial direction;
• the cushion packing including a plurality of protrusions extending from an outer circumferential surface of the cushion packing to a side surface thereof near the piston, and disposed alongside one another in a circumferential direction;
• a cushioning groove extending in a direction parallel to an axis of the cushion ring and having a cross-sectional area that changes, formed on an outer circumferential surface of the cushion ring;
• and
• a gap formed between adjacent ones of the plurality of protrusions of the cushion packing,
• wherein:
• the cushion packing includes an axially directed projection having an annular shape and is configured to project out in an axial direction from a side surface thereof facing away from the piston, and
• the axially directed projection includes a cutout portion formed by cutting out a distal end part thereof at a predetermined position in the circumferential direction.