变量泵的流量是可以通过改变倾斜盘元件的角度来调节。一般柱塞的位置达到0°转到180°时，柱塞缸容积变大，配油盘吸油口会流入液体到油缸，进而流量增大；一般柱塞的位置达到180°转到360°时，柱塞缸容积变小，进而流量减少。而对于定量泵来说，倾斜角度被固定住了，是不能过通过这种方法来调节流量。
柱塞泵是往复泵的一种，属于体积泵，其柱塞靠泵轴的偏心转动驱动，往复运动，其吸入和排出阀都是单向阀。当柱塞外拉时，工作室内压力降低，出口阀关闭，低于进口压力时，进口阀打开，液体进入;柱塞内推时，工作室压力升高，进口阀关闭，高于出口压力时，出口阀打开，液体排出。当传动轴带动缸体旋转时，斜盘将柱塞从缸体中拉出或推回，完成吸排油
德国力士乐柱塞泵A10VSO 10排量：
A10VSO10DR/52R-PPA12N00
A10VSO10DR/52L-PKC64N00
A10VSO10DR/52L-PPA14N00
A10VSO10DR/52L-PUC64N00
A10VSO10DR/52L-PUC64N00 E
A10VSO10DR/52R-PKC14N00
A10VSO10DR/52R-PKC64N00
A10VSO10DR/52R-PKC64N00 E
A10VSO10DR/52R-PKC64N00 ESO857
A10VSO10DR/52R-PKC64N00 ESO858
A10VSO10DR/52R-PKC64N00 ESO938
A10VSO10DR/52R-PKC64N00-SO857
A10VSO10DR/52R-PKC64N00-SO858
A10VSO10DR/52R-PKC64N00-SO938
A10VSO10DR/52R-PPA14N00
A10VSO10DR/52R-PPA14N00 E
A10VSO10DR/52R-PPA14N00-SO846
A10VSO10DR/52R-PPA14N00-SO857
A10VSO10DR/52R-PPA14N00-SO858
A10VSO10DR/52R-PPA64N00
A10VSO10DR/52R-PSA14N00
A10VSO10DFR/52L-PKC64N00
A10VSO10DFR/52L-PKC64N00 E
A10VSO10DFR/52L-PUC64N00
A10VSO10DFR/52R-PKC14N00
A10VSO10DFR/52R-PKC64N00
A10VSO10DFR/52R-PKC64N00 E
A10VSO10DFR/52R-PKC64N00-S1645
A10VSO10DFR/52R-PPA14N00
A10VSO10DFR/52R-PPA14N00-SO858
A10VSO10DFR/52R-PSA14N00-SO858
A10VSO10DFR/52R-PSC64N00
A10VSO10DFR/52R-PUC64N00
A10VSO10DFR/52R-PUC64N00 E
A10VSO10DFR/52R-PUC64N00 E
A10VSO10DFR/52R-PUC64N00 ESO857
A10VSO10DFR/52R-PUC64N00-SO857
A10VSO10DFR/52R-VUC14N00
A10VSO10DFR/52R-VUC14N00-SO420
A10VSO10DFR1/52L-PKC64N00
A10VSO10DFR1/52L-PPA14N00
A10VSO10DFR1/52L-PSC14N00
A10VSO10DFR1/52L-PSC64N00
A10VSO10DFR1/52L-PUC64N00
A10VSO10DFR1/52R-PKC64N00
A10VSO10DFR1/52R-PKC64N00 E
A10VSO10DFR1/52R-PKC64N00 E
A10VSO10DFR1/52R-PKC64N00-SO857
A10VSO10DFR1/52R-PKC64N00-SO858
A10VSO10DFR1/52R-PPA14N00
A10VSO10DFR1/52R-PPA14N00-S1482
A10VSO10DFR1/52R-PPA14N00-SO857
A10VSO10DFR1/52R-PPA14N00-SO858
A10VSO10DFR1/52R-PSA14N00-S1915
A10VSO10DFR1/52R-PSA14N00-SO 32
A10VSO10DFR1/52R-PSC14N00
A10VSO10DFR1/52R-PSC14N00-SO 32
A10VSO10DFR1/52R-PSC64N00
A10VSO10DFR1/52R-PSC64N00 E
A10VSO10DFR1/52R-PSC64N00 ES1768
A10VSO10DFR1/52R-PSC64N00-S1768
A10VSO10DFR1/52R-PUC64N00
A10VSO10DFR1/52R-PUC64N00 E
A10VSO10DFR1/52R-PUC64N00 E
A10VSO10DFR1/52R-PUC64N00-SO857
A10VSO10DFR1/52R-VPA14N00
A10VSO10DFR1/52R-VUC64N00
A10VSO10DR/52R-PSA14N00-S1482
A10VSO10DR/52R-PSA14N00-SO 32
A10VSO10DR/52R-PSA14N00-SO857
A10VSO10DR/52R-PSC64N00
A10VSO10DR/52R-PSC64N00 E
A10VSO10DR/52R-PSC64N00-SO858
A10VSO10DR/52R-PSC64N00-SO922
A10VSO10DR/52R-PUC14N00
A10VSO10DR/52R-PUC14N00
A10VSO10DR/52R-PUC64N00
A10VSO10DR/52R-PUC64N00 E
A10VSO10DR/52R-PUC64N00-S1768
A10VSO10DR/52R-PUC64N00-SO857
A10VSO10DR/52R-PUC64N00-SO858
A10VSO10DR/52R-VKC64N00 ES1768
A10VSO10DR/52R-VKC64N00-S1768
A10VSO10DR/52R-VPA14N00
A10VSO10DR/52R-VPA14N00-SO857
A10VSO10DR/52R-VSC64N00-SO857
A10VSO10DRG/52L-PSC64N00
A10VSO10DRG/52L-PUC64N00
A10VSO10DRG/52R-PKC14N00
A10VSO10DRG/52R-PKC64N00
A10VSO10DRG/52R-PKC64N00 E
A10VSO10DRG/52R-PKC64N00-SO846
A10VSO10DRG/52R-PKC64N00-SO857
A10VSO10DRG/52R-PKC64N00-SO858
A10VSO10DRG/52R-PPA14N00
A10VSO10DRG/52R-PPA14N00-SO857
A10VSO10DRG/52R-PPA14N00-SO858
A10VSO10DRG/52R-PPC14N00
A10VSO10DRG/52R-PSC14N00
A10VSO10DRG/52R-PSC14N00-SO857
A10VSO10DRG/52R-PSC64N00
A10VSO10DRG/52R-PUC14N00
A10VSO10DRG/52R-PUC64N00
A10VSO10DRG/52R-PUC64N00-SO857
A10VSO 18排量：
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
德国力士乐柱塞泵A10VSO 28排量：
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
德国力士乐柱塞泵A10VSO 45排量：
A10VSO45DR/31R-PPA12N00
A10VSO45DR/31R-PPA12K01
A10VSO45DFR1/31R-PPA12N00
A10VSO45DFR1/31R-PPA12N00
A10VSO45DFR1/31R-PPA12K02
A10VSO45DFR/31R-PPA12N00
A10VSO45DFR/31R-PPA12K01
A10VSO45DFR/31R-PPA12K26
A10VSO45DFLR/31R-PPA12N00
A10VSO45DG/31R-PPA12N00
A10VSO45DRG/31R-PPA12N00
A10VSO45DFE1/31R-PPA12N00
A10VSO45FHD/31R-PPA12N00
A10VSO45ED/31R-PPA12N00
德国力士乐柱塞泵A10VSO 71排量：
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
德国力士乐柱塞泵A10VSO 100排量：
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
德国力士乐柱塞泵A10VSO 140排量：
A10VSO140DR/31R-PPB12N00
A10VSO140DR/31R-PPB12K01
A10VSO140DFR1/31R-PPB12N00
A10VSO140DFR1/31R-PPB12N00
A10VSO140DFR1/31R-PPB12K01
A10VSO140DFR/31R-PPB12N00
A10VSO140DFLR/31R-PPB12N00
A10VSO140DG/31R-PPB12N00
A10VSO140DRG/31R-PPB12N00
A10VSO140DFE1/31R-PPB12N00
A10VSO140DFE1/31R-PPB12N002
A10VSO140FHD/31R-PPB12N00
A10VSO140ED/31R-PPB12N00
以上为德国力士乐A10VSO型号 (31和52系列)无通轴型柱塞泵10、18、28、45、71、100、140各排量常规型号。
