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柱塞泵，是由电动机提供泵的动力，经鼓型齿联轴器带动减速机转动。由减速机减速带动曲轴旋转。通过曲柄连杆机构，将旋转运动转变为十字头和柱塞为往复运动。当柱塞向后死点移动时，泵容积腔逐步增大，泵腔内压力降低，当泵腔压力低于进口压力时，吸入阀在进口端压力作用下开启，液体被吸入；当柱塞向前死点移动时，泵腔内压力增大，此时吸入阀关闭，排出阀打开，液体被挤出液缸，达到了吸入和排出的目的。

A10VSO型号选型参考详解：
举例型号：A10VSO18DFR1/31R-PPA12N00
A10VS→斜盘式变量泵，此系列工业驱动用，公称压力 28MPa，最高压力35MPa；
O    →运行方式，此系列用于开式回路系统；
18   →排量规格此型号为18m3（另有10、28、45、71、100、140等常见规格排量）
DFR1 →控制机构，（DG表示两位控制直接驱动；DR(G)表；示压力控制远程控制；DFR（1）压力/流量控制 ；带有1指在X油路无小孔；DFLR压力/流量/功率控制；FHD流量       控制，和先导压力有关带压力控制；FE1**流量电控；DFE1**压力/流量电控；ED电液压力控制）；
31   →产品系列
R    →转动方向（R顺时针，L逆时针）
P    →密封（P指带FKM轴封的NBR(丁晴橡胶，符合DIN ISO 1629),V指FKM(佛橡胶，符合DIN ISO 1629)）
P    →轴端（P指带键直轴 DIN 6885,S指花键轴SAE,R指花键轴SAE(较高的通轴驱动转矩)）；
A    →安装法兰孔（A指ISO 2孔，B指ISO 4孔）；
12   →工作油口连接，{压力油口B 吸油口S}在相反方向 ，SAE油口米制固定螺钉；
N00  →通轴，（N00无通轴驱动；有通轴驱动带轴向泵、齿轮泵回径向柱塞泵KB2、K51、KB3、K01等等）

A10VSO系列柱塞泵型号：

A10VSO28DR/31R-PPA12N00
A10VSO45DR/31R-PPA12N00
A10VSO71DR/31R-PPA12N00
A10VSO71DR/31R-PPA12N00
A10VSO100DR/31R-PPA12N00
A10VSO140DR/31R-PPB12N00
A10VSO10DRG/52R-PPA14N00
A10VSO18DFR1/31R-PPA12N00
A10VSO28DFR1/31R-PPA12N00
A10VSO45DFR1/31R-PPA12N00
A10VSO71DFR1/31R-PPA12N00
A10VSO71DFR1/31R-PPA12N00
A10VSO100DFR1/31R-PPA12N00
A10VSO140DFR1/31R-PPB12N00
A10VSO18DFR/31R-PPA12N00
A10VSO28DFR/31R-PPA12N00
A10VSO45DFR/31R-PPA12N00
A10VSO71DFR/31R-PPA12N00
A10VSO71DFR/31R-PPA12N00
A10VSO100DFR/31R-PPA12N00
A10VSO140DFR/31R-PPB12N00
A10VSO45DFR1/32R-PPB12N00
A10VS071DFR1/31R-VPA12N00
A10VS071DFR1/32R-VPB22U99
A10VS071DRS/32R-VPB22U99
A10VSO100DR/32R-PPB12N00 
A10VSO100DFR1/32R-VPB12N00
A10VS0100DFR1/32R-VPB22U99N00
A10VSO140DRS/32R-VPB22U99
A10VSO71DRS/32R-VPB22U99-S2184
A10VS0140DRS/32R-PPB22U99
A10VS0140DFR1/32R-VPB22U99N00
A10VSO18DR/31R-PPA12N00
A10VSO18DR/31R-PPA12K01
A10VSO18DFR1/31R-PPA12N00
A10VSO18DFR1/31R-PPA12N00
A10VSO18DFR1/31R-PPA12K01
A10VSO18DFR/31R-PPA12N00
A10VSO18DFLR/31R-PPA12N00
A10VSO18DG/31R-PPA12N00
A10VSO18DRG/31R-PPA12N00
A10VSO18DFE1/31R-PPA12N00
A10VSO18FHD/31R-PPA12N00
A10VSO18ED/31R-PPA12N00
A10VSO28DR/31R-PPA12N00
A10VSO28DR/31R-PPA12K01
A10VSO28DFR1/31R-PPA12N00
A10VSO28DFR1/31R-PPA12N00
A10VSO28DFR1/31R-PPA12K01
A10VSO28DFR/31R-PPA12N00
A10VSO28DFLR/31R-PPA12N00
A10VSO28DG/31R-PPA12N00
A10VSO28DRG/31R-PPA12N00
A10VSO28DFE1/31R-PPA12N00
A10VSO28FHD/31R-PPA12N00
A10VSO28ED/31R-PPA12N00
A10VSO71DR/31R-PPA12N00
A10VSO71DR/31R-PPA12K01
A10VSO71DFR1/31R-PPA12N00
A10VSO71DFR1/31R-PPA12N00
A10VSO71DFR1/31R-PPA12K02
A10VSO71DFR/31R-PPA12N00
A10VSO71DFR/31R-PPA12K27
A10VSO71DFLR/31R-PPA12N00
A10VSO71DG/31R-PPA12N00
A10VSO71DRG/31R-PPA12N00
A10VSO71DFE1/31R-PPA12N00
A10VSO71FHD/31R-PPA12N00
A10VSO71ED/31R-PPA12N00
A10VSO100DR/31R-PPA12N00
A10VSO100DR/31R-PPA12K01
A10VSO100DFR1/31R-PPA12N00
A10VSO100DFR1/31R-PPA12N00
A10VSO100DFR1/31R-PPA12K01
A10VSO100DFR/31R-PPA12N00
A10VSO100DFLR/31R-PPA12N00
A10VSO100DG/31R-PPA12N00
A10VSO100DRG/31R-PPA12N00
A10VSO100DFE1/31R-PPA12N00
A10VSO100DFE1/31R-PPA12K02
A10VSO100FHD/31R-PPA12N00
A10VSO140DR/31R-PPB12N00

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