| 摘要 |
PURPOSE:To improve durability by forming a number of spherical recessed parts engaged with the spherical edge part of each pluneger, onto a swash plate. CONSTITUTION:A number of spherical recessed parts 10a and 20a engaged with the spherical edge parts 9a and 19a of the both of a plunger pump 9 and a motor plunger 10 are formed onto a pump swash plate 10 and a motor swash plate 20. Therefore, each contact pressure between the swash plates 10 and 20 and the plungers 9 and 19 lowers, and the relative revolution between the swash plates 10 and 20 and the plungers 9 and 19 can be prevented, and the abrasion between the swash plates 10 and 20 and the plungers 9 and 19 can be reduced markedly. Further, since the swash plates 10 and 20 are provided with the center adjusting action, the load of the swash plate holders 5a and 22 for supporting the swash plates 10 and 20 can be reduced, and durability can be improved.
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