美国威格士VICKERS柱塞泵
柱塞泵（piston pump，plunger pump）属于容积式泵，往复泵。柱塞泵通过柱塞在柱塞缸体中作往复运动造成柱塞缸体中密封容积的变化而产生的压力差而使流体介质进行工作。改变柱塞的工作行程就可以控制柱塞泵流量的大小。柱塞泵是液压和气动传动中重要工作部件。常见的柱塞泵分为径向柱塞泵，轴向柱塞泵。柱塞泵柱塞往复运动总行程L是不变的，由凸轮的升程决定。柱塞每循环的供油量大小取决于供油行程,供油行程不受凸轮轴控制是可变的。供油开始时刻不随供油行程的变化而变化。转动柱塞可改变供油终了时刻，从而改变供油量。柱塞泵工作时，在喷油泵凸轮轴上的凸轮与柱塞弹簧的作用下，迫使柱塞作上、下往复运动，从而完成泵油任务，泵油过程可分为以下三个阶段。
进油过程
当凸轮的凸起部分转过去后，在弹簧力的作用下，柱塞向下运动，柱塞上部空间（称为泵油室）产生真空度，当柱塞上端面把柱塞套上的进油孔打开后，充满在油泵上体油道内的柴油经油孔进入泵油室，柱塞运动到下止点，进油结束。
供油过程
当凸轮轴转到凸轮的凸起部分顶起滚轮体时，柱塞弹簧被压缩，柱塞向上运动，燃油受压，一部分燃油经油孔流回喷油泵上体油腔。当柱塞顶面遮住套筒上进油孔的上缘时，由于柱塞和套筒的配合间隙很小（0.0015-0.0025mm）使柱塞顶部的泵油室成为一个密封油腔，柱塞继续上升，泵油室内的油压迅速升高，泵油压力>出油阀弹簧力+高压油管剩余压力时，推开出油阀，高压柴油经出油阀进入高压油管，通过喷油器喷入燃烧室。
回油过程
柱塞向上供油，当上行到柱塞上的斜槽（停供边）与套筒上的回油孔相通时，泵油室低压油路便与柱塞头部的中孔和径向孔及斜槽沟通，油压骤然下降，出油阀在弹簧力的作用下迅速关闭，停止供油。此后柱塞还要上行，当凸轮的凸起部分转过去后，在弹簧的作用下，柱塞又下行。此时便开始了下一个循环。
柱塞泵以一个柱塞为原理介绍，一个柱塞泵上有两个单向阀，并且方向相反，柱塞向一个方向运动时缸内出现负压，这时一个单向阀打开液体被吸入缸内，柱塞向另一个方向运动时，将液体压缩后另一个单向阀被打开，被吸入缸内的液体被排出。这种工作方式连续运动后就形成了连续供油 。
美国威格士VICKERS柱塞泵
威格士柱塞泵的维护
威格士斜盘式轴向柱塞泵一般采用缸体转动、端面配流的形式。缸体端面上镶有一块由双金属板与钢配油盘组成的摩擦副，而且大多数是采用平面配流的方法，所以维修比较方便。配油盘是轴向柱塞泵的关键部件之一，泵工作时，一方面工作腔的高压油把缸体推向配油盘，另一方面配油盘和缸体间的油膜压力形成对缸体的液压反推力使缸体背离配油盘。缸体对配油盘的设计液压压紧力Fn略大于配油盘对缸体的液压反推力Ff，即Fn/Ff=1.05~1.1，使泵工作正常并保持较高的容积效率。 实际上，由于油液的污染，往往使配油盘与缸体之间产生轻微磨损。
威格士液压柱塞泵靠气压供油的液压油箱，在每次启动机器后，必须等液压渍箱达到使用气压后，才能操作机械。直轴斜盘式柱塞泵分为压力供油型的自吸油型两种。压力供油型液压泵大都采用有气压的油箱，也有液压泵本身带有补油分泵向液压泵进油口提供压力油的。自吸油型液压泵的自吸油能力很强，无需外力供油。对于自吸油型柱塞泵，液压油箱内的油液不得低于油标下限，要保持足够数量的液压油。液压油的清洁度越高，液压泵的使用寿命越长。
美国威格士VICKERS柱塞泵
VICKERS威格士PVH081柱塞泵型号:
PVH081R52AA10B252000001001AA010A   PVH81C-RF-2S-11-C25V-31
PVH081R02AA10E252014001001AA010A   PVH81C-RF-2S-11-C25VT14-31
PVH081R01AA10A230000001001AA010A   PVH81C-RF-1S-11-C23-31
PVH081R02AA10B21200000100100010A   PVH81C-RF-2S-10-C21V-31
PVH081R01AA10A230000001001AE010A   PVH81QIC-RF-1S-11-C23-31
PVH081R01AA10A230000002001AE010A   PVH81QIC-RSF-1S-11-C23-31
VICKERS威格士PVH131柱塞泵型号
PVH131L12AF30B282000001AD2AA010A   PVH131C-LAF-12D-11-C28V-31
PVH131L12AF30B252000001AD100010A   PVH131C-LAF-12S-10-C25V-31
PVH131L12AF30B252000001AD1BG010A   PVH131C-LAF-12S-10-C25V-31-159
PVH131L12AF30K250000001AD100010A   PVH131C-LAF-12S-10-EDC25-10
PVH131L12AF30A130000AG1AD1AA010A   PVH131C-LAF-12S-11-C13-31
PVH131L16AF30A250000001AD100010A   PVH131C-LAF-16S-10-C25-31
PVH131L16AF30B252000001AD100010A   PVH131C-LAF-16S-10-C25V-31
PVH131L16AF30D180006001AT1AA010A   PVH131C-LAF-16S-11-C18T6-31-CD-031
PVH131L16AF30D250004001AD1AA010A   PVH131C-LAF-16S-11-C25T4-31
PVH131L02AF30B212000001AD200010A   PVH131C-LAF-2D-10-C21V-31-036
PVH131L02AF30B212000001AD2AA010A   PVH131C-LAF-2D-11-C21V-31-036
PVH131L03AF30E272015001AD2AA010A   PVH131C-LAF-3D-11-C27VT15-31
PVH131L03AF30A250000001AD100010A   PVH131C-LAF-3S-10-C25-31
PVH131L03AF30B252000001AD100010A   PVH131C-LAF-3S-10-C25V-31
PVH131L03AF30E252004001AD1AA010A   PVH131C-LAF-3S-11-C25VT4-31
PVH131L03AF30F282014001AT1AA010A   PVH131C-LAF-3S-11-C28VT14S-31-31
PVH131L12AF30B252000001AJ200010A   PVH131C-LBF-12D-10-C25V-31
PVH131L12AF30B252000001AJ100010A   PVH131C-LBF-12S-10-C25V-31
PVH131L12AF30B252000001AY100010A   PVH131C-LBF-12S-10-C25V-31-114
PVH131L12AF30B502000001AJ1AA010A   PVH131C-LBF-12S-11-C31V-31
PVH131L02AF30B162000001AJ1AA010A   PVH131C-LBF-2S-11-C16V-31
PVH131L02AF30B252000001AJ1AA010A   PVH131C-LBF-2S-11-C25V-31
PVH131L03AF30B252000001AJ1AA010A   PVH131C-LBF-3S-11-C25V-31
PVH131L12AF30B252000001AM2AA010A   PVH131C-LCF-12D-11-C25V-31
PVH131L12AF30B482000001AA1AA010A   PVH131C-LCF-12S-11-C275V-31-CD-114
PVH131L16AF30B252000001AM100010A   PVH131C-LCF-16S-10-C25V-31
PVH131L03AF30B252000001AM1AA010A   PVH131C-LCF-3S-11-C25V-31
PVH131L12AF30A250000001002AA010A   PVH131C-LF-12D-11-C25-31
PVH131L12AF30B25200000100100010A   PVH131C-LF-12S-10-C25V-31
PVH131L12AF30B252000001001AM010A   PVH131C-LF-12S-10-C25V-31-118
PVH131L33AF30B252000001002AA010A   PVH131C-LF-13D-11-C25V-31-259
PVH131L13AF30A25000000100100010A   PVH131C-LF-13S-10-C25-31
PVH131L13AF30B25200000100100010A   PVH131C-LF-13S-10-C25V-31
PVH131L13AF30B192000AK1001AA010A   PVH131C-LF-13S-11-C19V-31-188
PVH131L13AF30B252000001001AA010A   PVH131C-LF-13S-11-C25V-31
PVH131L29AF30B25200000100100010A   PVH131C-LF-29S-10-C25V-31-046
PVH131L29AF30B25340000100100010A   PVH131C-LF-29S-10-C25V34-31-CD-046
PVH131L02AF30B21200000100200010A   PVH131C-LF-2D-10-C21V-31-046
PVH131L02AF30B252000001002AA010A   PVH131C-LF-2D-11-C25V-31
PVH131L02AF30B252000001008AA010A   PVH131C-LF-2D-11-C25V-31-214
PVH131L02AF30B25200000100100010A   PVH131C-LF-2S-10-C25V-31-046
PVH131L02AF30B252000AL1001AP010A   PVH131C-LF-2S-10-C25V-31-208
PVH131L02AF30B192000AA1001AA010A   PVH131C-LF-2S-11-C19VB-31-CD
PVH131L02AF30B252000001001AA010A   PVH131C-LF-2S-11-C25V-31-046
PVH131L02AF30B253100001001AA010A   PVH131C-LF-2S-11-C25V31-31
PVH131L02AF30B282000AR1001AT010A   PVH131C-LF-2S-11-C28VB-31-220
PVH131L02AF30B282000BK1001AT010A   PVH131C-LF-2S-11-C28VB-31-255
PVH131L03AF30B172000001002AA010A   PVH131C-LF-3D-11-C17V-31
PVH131L03AF30A25000000100100010A   PVH131C-LF-3S-10-C25-31
PVH131L03AF30B25200000100100010A   PVH131C-LF-3S-10-C25V-31
PVH131L03AF30K25000000100100010A   PVH131C-LF-3S-10-EDC25-10
PVH131L03AF30E252015001001AA010A   PVH131C-LF-3S-11-C25VT15-31
PVH131L12AJ30B252000002001AA010A   PVH131C-LSF-12S-11-C25V-31
PVH131L13AF30A25000000200100010A   PVH131C-LSF-13S-10-C25-31
PVH131L02AJ30B252000002001AA010A   PVH131C-LSF-2S-11-C25V-31
PVH131L03AF30B25200000200100010A   PVH131C-LSF-3S-10-C25V-31
PVH131L03AF30B252000002001AP010A   PVH131C-LSF-3S-10-C25V-31-164
PVH131L03AF30B252000AL2001AP010A   PVH131C-LSF-3S-10-C25V-31-208
PVH131R12AF30B202000001AD200010A   PVH131C-RAF-12D-10-C20V-31
PVH131R12AF30B252000001AD2AA010A   PVH131C-RAF-12D-11-C25V-31
PVH131R12AF30B252000AA1AD2AA010A   PVH131C-RAF-12D-11-C25VB-31
PVH131R12AF30E252013001AD2AA010A   PVH131C-RAF-12D-11-C25VT13-31
PVH131R12AF30B332000001AD2AA010A   PVH131C-RAF-12D-11-C33V-31-039
PVH131R12AF30B252000001AD100010A   PVH131C-RAF-12S-10-C25V-31
PVH131R16AF30D250004001AD2AA010A   PVH131C-RAF-16D-11-C25T4-31
PVH131R16AF30A250000001AD100010A   PVH131C-RAF-16S-10-C25-31
PVH131R16AF30B252000001AD100010A   PVH131C-RAF-16S-10-C25V-31
PVH131R16AF30A070000001AD100010A   PVH131C-RAF-16S-10-CM7-31
PVH131R16AF30D250015001AD1AA010A   PVH131C-RAF-16S-11-C25T15-31
PVH131R16AF30C250004001AD1AA010A   PVH131C-RAF-16S-11-C25T4S-31
PVH131R16AF30B252000001AD1AN010A   PVH131C-RAF-16S-11-C25V-31-115
PVH131R16AF30E252004001AD1AA010A   PVH131C-RAF-16S-11-C25VT4-31
PVH131R02AF30B142000001AD200010A   PVH131C-RAF-2D-10-C14V-31-036
PVH131R02AF30A250000001AT1AA010A   PVH131C-RAF-2S-11-C25-31-196
PVH131R02AF30B252000001AD1AA010A   PVH131C-RAF-2S-11-C25V-31-036
PVH131R03AF30B252000001AD200010A   PVH131C-RAF-3D-10-C25V-31
PVH131R03AF30F282014001AD2AA010A   PVH131C-RAF-3D-11-C28VT14S-31
PVH131R03AF30A250000001AD100010A   PVH131C-RAF-3S-10-C25-31
PVH131R03AF30B252000001AD100010A   PVH131C-RAF-3S-10-C25V-31
PVH131R03AF30B252000001AD1AP010A   PVH131C-RAF-3S-10-C25V-31-164
PVH131R03AF30B252000001AD1AP010A   PVH131C-RAF-3S-10-C25V-31-166
PVH131R03AF30B252000AL1AD1AP010A   PVH131C-RAF-3S-10-C25V-31-208
PVH131R03AF30A070000001AD100010A   PVH131C-RAF-3S-10-CM7-31
PVH131R03AF30A250000001AD1AA010A   PVH131C-RAF-3S-11-C25-31
PVH131R03AF30E252008001AD1AA010A   PVH131C-RAF-3S-11-C25VT8-31
PVH131R12AF30B252000001AJ100010A   PVH131C-RBF-12S-10-C25V-31
PVH131R16AF30B211700001AY100010A   PVH131C-RBF-16S-10-C21V17-31-070
PVH131R16AF30E252012001AJ1AA010A   PVH131C-RBF-16S-11-C25VT12-31-CD
PVH131R03AF30B252000001AJ1AA010A   PVH131C-RBF-3S-11-C25V-31
PVH131R03AF30E252012001AJ1AA010A   PVH131C-RBF-3S-11-C25VT12-31-CD
VICKERS威格士PVH131柱塞泵型号
PVH131R13AF30A25000000100100010A   PVH131C-RF-13S-10-C25-31
PVH131R13AF30B25200000100100010A   PVH131C-RF-13S-10-C25V-31
PVH131R13AF30A250000001001AA010A   PVH131C-RF-13S-11-C25-31
PVH131R13AF30B252000001001AA010A   PVH131C-RF-13S-11-C25V-31
PVH131R13AF30A25000000200100010A   PVH131C-RSF-13S-10-C25-31
PVH131R13AF30B25200000200100010A   PVH131C-RSF-13S-10-C25V-31
PVH131R13AF30A250000001001AB010A   PVH131QIC-RF-13S-10-C25-31
PVH131R13AF30B252000001001AB010A   PVH131QIC-RF-13S-10-C25V-31
PVH131R13AF30A250000001001AE010A   PVH131QIC-RF-13S-11-C25-31
PVH131R13AF30B252000001001AE010A   PVH131QIC-RF-13S-11-C25V-31
PVH131R13AG30A250000001001AB010A   PVH131QIC-RM-13S-10-C25-31
PVH131R13AG30D250004001001AE010A   PVH131QIC-RM-13S-11-C25T4-31
PVH131R13AF30A250000002001AB010A   PVH131QIC-RSF-13S-10-C25-31
PVH131R13AF30B252000002001AB010A   PVH131QIC-RSF-13S-10-C25V-31
PVH131R13AF30A250000002001AE010A   PVH131QIC-RSF-13S-11-C25-31
VICKERS威格士PVH57柱塞泵型号
PVH057R01AA10A25000000100100010A   PVH57C-RF-1S-10-C25-31
PVH057R01AA10B25200000100100010A   PVH57C-RF-1S-10-C25V-31
PVH057R02AA10A25000000100100010A   PVH57C-RF-2S-10-C25-31
PVH057R02AA10B25200000100100010A   PVH57C-RF-2S-10-C25V-31
PVH057R02AA10A250000001001AA010A   PVH57C-RF-2S-11-C25-31
PVH057R02AA10B252000001001AA010A   PVH57C-RF-2S-11-C25V-31
PVH057R01AB10B252000001001AA010A   PVH57C-RM-1S-11-C25V-31
PVH057R02AB10B252000001001AA010A   PVH57C-RM-2S-11-C25V-31
PVH057R01AA10A25000000200100010A   PVH57C-RSF-1S-10-C25-31
PVH057R01AA10B25200000200100010A   PVH57C-RSF-1S-10-C25V-31
PVH057R02AA10A25000000200100010A   PVH57C-RSF-2S-10-C25-31
PVH057R02AA10B252000002001AA010A   PVH57C-RSF-2S-11-C25V-31
PVH057R01AA10A250000001001AB010A   PVH57QIC-RF-1S-10-C25-31
PVH057R01AA10B252000001001AB010A   PVH57QIC-RF-1S-10-C25V-31
PVH057R01AA10A250000001001AF010A   PVH57QIC-RF-1S-11-C25-31
PVH057R01AA10B252000001001AE010A   PVH57QIC-RF-1S-11-C25V-31
PVH057R02AA10A250000001001AB010A   PVH57QIC-RF-2S-10-C25-31
PVH057R02AA10B252000001001AB010A   PVH57QIC-RF-2S-10-C25V-31
PVH057R02AA10A250000001001AF010A   PVH57QIC-RF-2S-11-C25-31
PVH057R02AA10A250000001001AE010A   PVH57QIC-RF-2S-11-C25-31
PVH057R02AA10B252000001001AF010A   PVH57QIC-RF-2S-11-C25V-31
PVH057R02AA10B252000001001AE010A   PVH57QIC-RF-2S-11-C25V-31
PVH057R01AB10A250000001001AB010A   PVH57QIC-RM-1S-10-C25-31
PVH057R01AA10A250000002001AB010A   PVH57QIC-RSF-1S-10-C25-31
PVH057R01AA10B252000002001AB010A   PVH57QIC-RSF-1S-10-C25V-31
PVH057R01AA10A250000002001AE010A   PVH57QIC-RSF-1S-11-C25-31
PVH057R02AA10A250000002001AB010A   PVH57QIC-RSF-2S-10-C25-31
PVH057R01AB10A250000002001AE010A   PVH57QIC-RSM-1S-11-C25-31
VICKERS威格士PVH63柱塞泵型号.
PVH063R01AA10H002000AW1001AB010A   PVH63QIC-RF-1S-10-IC-31
PVH063R01AA10D250008001001AE010A   PVH63QIC-RF-1S-11-C25T8-31
PVH063R51AA10AAF010A   PVH63QIC-RF-1S-11-CM7-31
PVH063R01AB10A250000001001AE010A   PVH63QIC-RM-1S-11-C25-31
PVH063R01AA10AAE010A   PVH63QIC-RSF-1S-11-CM7-31
PVH063R02AA10AAE010A   PVH63QIC-RSF-2S-11-CM7-31