The invention discloses a buffering oil cylinder and relates to the technical field of hydraulic oil cylinders. The buffering oil cylinder comprises a cylinder
barrel, a cylinder cover, a
piston and a
piston rod, wherein the
piston rod is sleeved by a buffering sleeve, the buffering sleeve is in clearance fit with the
piston rod, and the buffering sleeve is in clearance fit with a buffering hole formed in the cylinder cover. A rod cavity is communicated with an oil return opening formed in a cylinder body through the buffering hole, the two ends of the buffering sleeve are respectively in
butt joint with a shoulder of the piston and a shoulder of the
piston rod, a plurality of first oil channels are formed in two end faces of the buffering sleeve, a conical inclined guide face is arranged at one end, adjacently connected with one end of the rod cavity, of the buffering hole, an annular
ditch is formed in the inner wall of the buffering sleeve in the
peripheral direction, a buffering ring capable of moving in the annular
ditch in the axial direction is arranged in the annular
ditch, the gap between the buffering ring and the
piston rod is smaller than the gap between the buffering sleeve and the piston rod, and a plurality of second oil channels are formed in a rear end face, facing the piston, of the buffering ring. The buffering oil cylinder solves the problems that an existing buffering oil cylinder is prone to being blocked in a buffering process, large in pressure
impact and prone to vibrating and
crawling in a starting process.