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美國VICKERS@威格士柱塞泵柱塞往復運動總行程L是不變的，由凸輪的升程決定。VICKERS柱塞每循環的供油量大小取決于供油行程,供油行程不受凸輪軸控制是可變的。供油開始時刻不隨供油行程的變化而變化。轉動柱塞可改變供油終了時刻，從而改變供油量。柱塞泵工作時，在噴油泵凸輪軸上的凸輪與柱塞彈簧的作用下，迫使柱塞作上、下往復運動，從而完成泵油任務。

威格士柱塞泵過熱 液壓泵過度發熱有兩個原因，一是機械摩擦生熱。由于運動表面處于干摩擦或半干摩擦狀態，運動部件相互摩擦生熱。二是液體摩擦生熱。高壓油通過各種縫隙泄漏到低壓腔，大量的液壓能損失轉為熱能。所以正確選擇運動部件之間的間隙、油箱容積和冷卻器，可以杜絕泵的過度發熱和油溫過高的現象。另外，回油過濾器堵塞造成回油背壓過高，也會引起油溫過高和泵體過熱。

美國VICKERS@威格士柱塞泵PVH131R03AF30B252000009AM1AM010A   PVH131C-RCF-3S-10-C25V-31-117
PVH131R03AF30A070000001AM100010A   PVH131C-RCF-3S-10-CM7-31
PVH131R03AF30B252000001AM1AA010A   PVH131C-RCF-3S-11-C25V-31
PVH131R12AF30A250000001002AA010A   PVH131C-RF-12D-11-C25-31
PVH131R12AF30B25200000100100010A   PVH131C-RF-12S-10-C25V-31
PVH131R12AF30B252000001001AA010A   PVH131C-RF-12S-11-C25V-31
PVH131R12AF30B252000AF1001AA010A   PVH131C-RF-12S-11-C25V-31-023
PVH131R13AF30A25000000100100010A   PVH131C-RF-13S-10-C25-31
PVH131R13AF30B25200000100100010A   PVH131C-RF-13S-10-C25V-31
PVH131R13AF70B25200000100100010A   PVH131C-RF-13S-10-C25V-31-057
PVH131R13AF30A00010A   PVH131C-RF-13S-10-CM7-31
PVH131R13AF30B07200000100100010A   PVH131C-RF-13S-10-CM7V-31
PVH131R13AF30H002000BD100100010A   PVH131C-RF-13S-10-IC-31-CD-142
PVH131R13AF30A250000001001AA010A   PVH131C-RF-13S-11-C25-31
PVH131R13AF30A250000001001AN010A   PVH131C-RF-13S-11-C25-31-115
PVH131R13AF30D250014001001AA010A   威格士柱塞泵 PVH131C-RF-13S-11-C25T14-31
PVH131R13AF30D250019001001AA010A   PVH131C-RF-13S-11-C25T19-31
PVH131R13AF30B252000001001AA010A   PVH131C-RF-13S-11-C25V-31
PVH131R13AF30E252015001001AA010A   PVH131C-RF-13S-11-C25VT15-31
PVH131R13AF30E252004001001AA010A   PVH131C-RF-13S-11-C25VT4-31
PVH131R13AF30AAA010A   PVH131C-RF-13S-11-CM7-31
PVH131R13AF30AAN010A   PVH131C-RF-13S-11-CM7-31-115
PVH131R02AF30B21200000100200010A   PVH131C-RF-2D-10-C21V-31-046
PVH131R02AF30B252000001002AP010A   PVH131C-RF-2D-10-C25V-31-165
PVH131R02AF30B252000AL1002AP010A   PVH131C-RF-2D-10-C25V-31-206
PVH131R02AF30B252000AL1002AP010A   PVH131C-RF-2D-10-C25V-31-210
PVH131R02AF30B252000001002AA010A   PVH131C-RF-2D-11-C25V-31-046
PVH131R02AF30A25000000100100010A   PVH131C-RF-2S-10-C25-31-046
PVH131R02AF30B25200000100100010A   PVH131C-RF-2S-10-C25V-31-046
PVH131R02AF30B192000AA1001AA010A   PVH131C-RF-2S-11-C19VB-31-CD
PVH131R02AF30B252600001001AA010A   PVH131C-RF-2S-11-C25V26-31
PVH131R02AF30B252000001001AA010A   PVH131C-RF-2S-11-C25V-31
PVH131R02AF30B252000001001AA010A   PVH131C-RF-2S-11-C25V-31-046
PVH131R02AF30B282000AA1001AA010A   PVH131C-RF-2S-11-C28VB-31-046
PVH131R02AF30B282000AR1001AA010A   PVH131C-RF-2S-11-C28VB-31-219
PVH131R02AF30B282000BK1001AT010A  威格士柱塞泵  PVH131C-RF-2S-11-C28VB-31-255
PVH131R03AF30A17000000100100010A   PVH131C-RF-3S-10-C17-31
PVH131R03AF30A25000000100100010A   PVH131C-RF-3S-10-C25-31
PVH131R03AF30B25200000100100010A   PVH131C-RF-3S-10-C25V-31
PVH131R03AF30A00010A   PVH131C-RF-3S-10-CM7-31
PVH131R03AF30A250000001001AA010A   PVH131C-RF-3S-11-C25-31
PVH131R03AF30A250000001001AR010A   PVH131C-RF-3S-11-C25-31-164
PVH131R03AF30D250004001001AA010A   PVH131C-RF-3S-11-C25T4-31
PVH131R03AF30E252015001001AA010A   PVH131C-RF-3S-11-C25VT15-31
PVH131R03AF30J002000BD1001AA010A   PVH131C-RF-3S-11-ICT4-31-142
PVH131R13AF30A25000000200100010A   PVH131C-RSF-13S-10-C25-31
PVH131R13AF30B25200000200100010A   PVH131C-RSF-13S-10-C25V-31
PVH131R13AF30A07000000200100010A   PVH131C-RSF-13S-10-CM7-31
PVH131R13AF30A250000002001AR010A   PVH131C-RSF-13S-11-C25-31-164
PVH131R02AF30B252000002001AA010A   PVH131C-RSF-2S-11-C25V-31
威格士柱塞泵 PVH131R03AF30A25000000200100010A   PVH131C-RSF-3S-10-C25-31
PVH131R03AF30A250000002001AA010A   PVH131C-RSF-3S-11-C25-31
PVH131R16AF70E252004001AD1AG010A   PVH131QC3-RAF-16S-11-C25VT4-31-087
PVH131R16AF70E162005001AD1AE010A   PVH131QIC3-RAF-16S-11-C16VT5-31
PVH131R16AF70E252004001AD1AE010A   PVH131QIC3-RAF-16S-11-C25VT4-31
PVH131R16AF70F252004001AD1AE010A   PVH131QIC3-RAF-16S-11-C25VT4S-31
PVH131R16AF70E072004001AD1AE010A   PVH131QIC3-RAF-16S-11-CM7VT4-31
PVH131R13AF70E182005001001AE010A   PVH131QIC3-RF-13S-11-C18VT5-31
PVH131R13AF70B252000001001AE010