結構形式

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

      MCY14-1B：定量柱塞泵

      SCY14-1B：手動變量柱塞泵

      YCY14-1B：壓力變量柱塞泵

      BCY14-1B：電液控制柱塞泵

      PCY14-1B：恒壓變量柱塞泵

      柱塞泵的泵油機構包括兩套精密偶件：柱塞+柱塞套構成柱塞偶件、出油閥和出油閥座構成出油閥偶件

      柱塞和柱塞套是一對精密偶件，經配對研磨后不能互換，要求有高的精度和光潔度和好的耐磨性，其徑向間隙為0.002～0.003mm

      柱塞頭部圓柱面上切有斜槽，并通過徑向孔、軸向孔與頂部相通，其目的是改變循環供油量；柱塞套上制有進、回油孔，均與泵上體內低壓油腔相通，柱塞套裝入泵上體后，應用定位螺釘定位。

      柱塞頭部斜槽的位置不同，改變供油量的方法也不同。

      出油閥和出油閥座也是一對精密偶件，配對研磨后不能互換，其配合間隙為0.01mm 。

      出油閥是一個單向閥，在彈簧壓力作用下，閥上部圓錐面與閥座嚴密配合，其作用是在停供時，將高壓油管與柱塞上端空腔隔絕，防止高壓油管內的油倒流入噴油泵內。

      出油閥的下部呈十字斷面，既能導向，又能通過柴油。出油閥的錐面下有一個小的圓柱面，稱為減壓環帶，其作用是在供油終了時，使高壓油管內的油壓迅速下降，避免噴孔處產生滴油現象。當環帶落入閥座內時則使上方容積很快增大，壓力迅速減小，停噴迅速。

德國力士樂柱塞泵型號：

A10VSO18DFR1/31R-PPA12N00

A10VSO18DFR1/31R-PPB12N00

A10VSO18DFR1/32R-VPB12N00

A10VG18HD1/10L-NSC16N003E

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A10VSO28DRF1/31R-PSA12N00

E-A10VSO28DFR1/31R-PPA12N00

A10VSO28DR/31R-PSC12N00

A10V028DR/31R-PSC62K01

A10V028DFR1/31R-PSC62N00

A10VSO45DFR1/31R-PPA12N00

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A10VSO45DR/31R-PPA12N00

A10VSO45DR/31R-PPA12K25

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A10VSO58DFR1/31R-PPA12N00

A10VS045DFR1/31RPPA12NOO

E-A10VSO45DFR1/31R-PPA12N00

A10VS045DFR/31R-PPA12NOO-SO32

A10VS045DR/31R-PPA12N00

A10VS045DR/52R-PC12N00

A10V045DFR1/31R-PSC62K02

A10VSO45DFR1/31R-PPA12N00

A10VS045DR/31RPPB12-NDD

A10VO45DFR1/31R-PSC62K02

A10VSO71DFR1/32R-VPB22U99

A10VSO71DFR1/31R-PPA12N00

A10VSO71DFR1/32R-VPB12N00

A10VSO71DFR1/31R-PPA12KB5

A10VSO71DFR/31R-PSC62K07

A10VO71DFRI/34 PSC6402-S0225

A10VSO71FR1/31R-PPA12N00

A10VSO71DFR1/31R-PPB12NOO

E-A10VSO71DFR1/31R-PPA12N00

A10VO71DFR1/31RPSC62K07

A10VSO71DFR/31R-PPA12KB3

A10VS071DR/31R-PPA12N00

A10VS071DFR/31R-PPA12N00

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A10VSO71DFR1/31R-PPA12N00

A10VSO71DFR1/32R-VPB22U99

EA10VSO71DR/31R-PPA12N00

A10VS0100DR/31R-PPA12N00

A10VS0100DR/32R-VPB22U99

A10VSO100DFR1/32R-VPB12N00

A10VSO100DFR1/31R-PPA12K

A10VSO100DFR1/31R-PPA12KB3

EA10VSO100PFR1/31R-PPA12N00

A10VSO100DFR/31RPSB12K24

A10VSO100DR/31R-VPA12N00

A10VSO100DR/31R-PPA12N00

A10VS0100DFR1/31R-PPA12N00

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A10V0100DR/31R-PSC11N00

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A10VSO100DFR1/32R-VPB12N00

A10VSO140DFR1/31R-PPB12N00

A10VSO140DFLR1/31R-PPB12KO1

A10VSO-140DR/31R-PPB12N00

A10VSO140DFR1S/31RPPB12N0

A10VSO140DFR1/31R-PPB12N00

A10VS0140DFLR/31R-PPB12N00

A10VSO140DR/31R-PPB12N00

A10VS0140DRS/32R-VPB12N00

E-A10VSO140D/31R-PPB12N00

A10VSO140DFR1/31R-PPB12N00

A10VS0140DR/32R-VPB12N00

AE-A10VSO140D/31R-PPB12N00

A10VSO140DR/31R-PPB12N00

A10VSO140DRS/32R-VPB12N00

A10VSO140DFR1/31R-PPB12N00

A10VSO140DFR1/32R-VPB12N00

A10VSO140DRS/32R-VPB12N00