威格士柱塞泵
　　威格士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。

威格士油泵结构形式
　　1）威格士柱塞泵是液压系统的一个重要装置。它依靠柱塞在缸体中往复运动，使密封工作容腔的容积发生变化来实现吸油、压油。柱塞泵具有额定压力高、结构紧凑、效率高和流量调节方便等优点，被广泛应用于高压、大流量和流量需要调节的场合，诸如液压机、工程机械和船舶中。　　
    2）威格士柱塞和柱塞套是一对精密偶件，经配对研磨后不能互换，要求有高的精度和光洁度和好的耐磨性，其径向间隙为0.002～0.003mm 　　
    3）威格士柱塞头部圆柱面上切有斜槽，并通过径向孔、轴向孔与顶部相通，其目的是改变循环供油量；柱塞套上制有进、回油孔，均与泵上体内低压油腔相通，柱塞套装入泵上体后，应用定位螺钉定位。　　
    威格士柱塞头部斜槽的位置不同，改变供油量的方法也不同。

VICKERS威格士PVH098柱塞泵型号.
PVH098R01AJ30A25000000100100010A   PVH98C-RF-1S-10-C25-31
PVH098R01AJ30B25200000100100010A   PVH98C-RF-1S-10-C25V-31
PVH098R01AJ30B252000001001AA010A   PVH98C-RF-1S-11-C25V-31
PVH098R02AJ30A25000000100100010A   PVH98C-RF-2S-10-C25-31
PVH098R02AJ30B25200000100100010A   PVH98C-RF-2S-10-C25V-31
PVH098R02AJ30B252000001001AA010A   PVH98C-RF-2S-11-C25V-31
PVH098R01AJ30A25000000200100010A   PVH98C-RSF-1S-10-C25-31
PVH098R01AJ30B25200000200100010A   PVH98C-RSF-1S-10-C25V-31
PVH098R02AJ30A25000000200100010A   PVH98C-RSF-2S-10-C25-31
PVH098R02AJ30B25200000200100010A   PVH98C-RSF-2S-10-C25V-31
PVH098R01AJ30A250000001001AB010A   PVH98QIC-RF-1S-10-C25-31
PVH098R01AJ30B252000001001AB010A   PVH98QIC-RF-1S-10-C25V-31
PVH098R01AJ30A250000001001AE010A   PVH98QIC-RF-1S-11-C25-31
PVH098R02AJ30B252000001001AB010A   PVH98QIC-RF-2S-10-C25V-31
PVH098R02AJ30A250000001001AE010A   PVH98QIC-RF-2S-11-C25-31
PVH098R01AD30A250000001001AB010A   PVH98QIC-RM-1S-10-C25-31
PVH098R01AD30A250000001001AE010A   PVH98QIC-RM-1S-11-C25-31
PVH098R01AJ30A250000002001AB010A   PVH98QIC-RSF-1S-10-C25-31
PVH098R01AJ30B252000002001AB010A   PVH98QIC-RSF-1S-10-C25V-31
PVH098R01AJ30A250000002001AE010A   PVH98QIC-RSF-1S-11-C25-31
PVH098R02AJ30A250000002001AB010A   PVH98QIC-RSF-2S-10-C25-31
PVH098R02AJ30A250000002001AE010A   PVH98QIC-RSF-2S-11-C25-31
PVH098R01AD30A250000002001AB010A   PVH98QIC-RSM-1S-10-C25-31
PVH098R01AD30A250000002001AE010A   PVH98QIC-RSM-1S-11-C25-31
PVH098R01AD30B252000002001AE010A   PVH98QIC-RSM-1S-11-C25V-31