R910916805 A A10VSO28DFR1/31R-VPA12N00 德国力士乐REXROTH柱塞泵

　　液压泵是液压系统的动力元件，是靠发动机或电动机驱动，从液压油箱中吸入油液，形成压力油排出，送到执行元件的一种元件。液压泵按结构分为齿轮泵、柱塞泵、叶片泵和螺杆泵

　　为液压传动提供加压液体的一种液压元件，是泵的一种。它的功能是把动力机（如电动机和内燃机等）的机械能转换成液体的压力能。影响液压泵的使用寿命因素很多，除了泵自身设计、制造因素外和一些与泵使用相关元件（如联轴器、滤油器等）的选用、试车运行过程中的操作等也有关系。

　　液压泵的工作原理是运动带来泵腔容积的变化，从而压缩流体使流体具有压力能。

　　必须具备的条件就是泵腔有密封容积变化。常用液压泵的种类：

　　1、按流量是否可调节可分为：变量泵和定量泵。输出流量可以根据需要来调节的称为变量泵，流量不能调节的称为定量泵。

　　2、按液压系统中常用的泵结构分为：齿轮泵、叶片泵和柱塞泵3种。A10VSO45DR/31R-PPA12K25

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　　力士乐柱塞泵部分 型号

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