柱塞泵分为轴向柱塞泵和径向柱塞泵两种代表性的结构形式；

由于径向柱塞泵属于一种新型的技术含量比较高的高效泵，

随着国产化的不断加快，径向柱塞泵必然会成为柱塞泵应用领域的重要组成部分，

轴向柱塞泵是利用与传动轴平行的柱塞在柱塞孔内往复运动所产生的容积变化来进行工作的.

由于柱塞和柱塞孔都是圆形零件，加工时可以达到很高的精度配合，因此具有容积效率高，运转平稳.

流量均匀性好，噪声低，工作压力高等优点，但对液压油的污染较敏感，结构较复杂，造价较高。

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