柱塞泵分為軸向柱塞泵和徑向柱塞泵兩種代表性的結構形式；

由于徑向柱塞泵屬于一種新型的技術含量比較高的高效泵，

隨著國產(chǎn)化的不斷加快，徑向柱塞泵必然會成為柱塞泵應用領域的重要組成部分，

軸向柱塞泵是利用與傳動軸平行的柱塞在柱塞孔內往復運動所產(chǎn)生的容積變化來進行工作的.

由于柱塞和柱塞孔都是圓形零件，加工時可以達到很高的精度配合，因此具有容積效率高，運轉平穩(wěn).

流量均勻性好，噪聲低，工作壓力高等優(yōu)點，但對液壓油的污染較敏感，結構較復雜，造價較高。

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