它的作用原理和單作用葉片泵相似，不同之處只在于定子表面是由兩段長半徑圓弧、兩段短半徑圓弧和四段過渡曲線八個部分組成，且定子和轉子是同心的。在圖示轉子順時針方向旋轉的情況下，密封工作腔的容積在左上角和右下角處逐漸增大，為吸油區，在左下角和右上角處逐漸減小，為壓油區；吸油區和壓油區之間有一段封油區把它們隔開。這種泵的轉子每轉一轉，每個密封工作腔完成吸油和壓油動作各兩次，所以稱為雙作用葉片泵。泵的兩個吸油區和兩個壓油區是徑向對稱的，作用在轉子上的液壓力徑向平衡，所以又稱為平衡式葉片泵。PV7-1X/40-45RE01MC0-16

PV7-1X/40-45RE37MD0-16

PV7-1X/40-71RE01MC0-08

PV7-1X/40-71RE37MD0-08

PV7-1X/63-71RE01MC0-16

PV7-1X/63-71RE07MD0-16

PV7-1X/63-94RE01MC0-08

PV7-1X/63-94RE07MD0-08

PV7-1X/100-118RE01MC0-16

PV7-1X/100-118RE07MD0-16

PV7-1X/100-150RE07MC0-08

PV7-1X/100-150RE07MD0-08

PV7-1X/06-10RA01MA0-05

PV7-1X/06-10RA01MA0-10

PV7-1X/06-14RA01MA0-04

PV7-1X/06-14RA01MA0-07

PV7-2X/20-20RA01MA0-05

PV7-2X/20-20RA01MA0-10

PV7-2X/20-25RA01MA0-05

PV7-2X/20-25RA01MA0-10

PV7-1X/10-14RE01MC0-16

PV7-1X/10-14RE01MD0-16

PV7-1X/10-20RE01MC0-10

PV7-1X/10-20RE01MD0-10

PV7-1X/16-20RE01MC0-16

PV7-1X/16-20RE01MD0-16

PV7-1X/16-30RE01MC0-08

PV7-1X/16-30RE01MD0-08

PV7-1X/25-30RE01MC0-16

PV7-1X/25-30RE01MD0-16

PV7-1X/25-45RE01MC0-08

PV7-1X/25-45RE01MD0-08

PV7-1X/40-45RE01MC0-16

PV7-1X/40-45RE37MD0-16

PV7-1X/40-71RE01MC0-08

PV7-1X/40-71RE37MD0-08

PV7-1X/63-71RE01MC0-16

PV7-1X/63-71RE07MD0-16

PV7-1X/63-94RE01MC0-08

PV7-1X/63-94RE07MD0-08

PV7-1X/100-118RE01MC0-16

PV7-1X/100-118RE07MD0-16

PV7-1X/100-150RE07MC0-08