Patent ID: 8671825

Claim:
A fluid pressure cylinder comprising: a cylinder tube having a central axis and an open end oriented in an axial direction; a piston accommodated in the cylinder tube to be capable of sliding in the axial direction; a piston rod that is joined to the piston and projects from the cylinder tube in the axial direction to an outer side of the cylinder tube; a cylinder head that closes the open end while supporting the piston rod to be capable of sliding, the piston contacting the cylinder head in accordance with an axial direction displacement thereof; and a plurality of head bolts that fix the cylinder head to the open end of the cylinder tube, wherein the head bolts are disposed at equal angular intervals within a fixed angular range on a circumference centering on the central axis of the cylinder tube, thereby forming a head bolt group, and when an angular range in which the head bolt group, which is bordered by two straight lines linking a center of the head bolts positioned at either circumferential direction end of the head bolt group to the central axis, exists is set as a first region and a remaining angular range is set as a second region, a non-contact region in which contact is avoided between the piston and the cylinder head is provided within the second region.