| 摘要 |
<p>PROBLEM TO BE SOLVED: To improve the durability of a baring in a swash plate type piston pump/motor. SOLUTION: In this swash plate type piston pump/motor having plural circumferential groove parts 32 and 33 where an oil guide groove 31 is circumferentially extended, and plural end groove parts 34 and 35 connected with both ends of the circumferential groove parts 32 and 33 and axially extended, and surrounding opening ends of a pressure guide passage 22 by the circumferential groove parts 32 and 33 and the end groove parts 34 and 35, the end groove parts 34 and 35 define a buffering clearance 30 having a cross section gradually reduced in accordance with the separation from opening ends of the circumferential groove parts 32 and 33, a collision angle of hydraulic oil circumferentially flowing between a supporting shaft 11 and a bearing, to a bearing face is reduced, and the generation of the erosion can be prevented.</p> |
