The working principle of Parker gear pump PGP511A0170CR5H3MD6B1QABA: When the driving gear of the Parker pump rotates in the direction of the arrow, the gear on the right side (oil suction chamber) of the gear pump disengages, and the teeth of the gear withdraw from the teeth, increasing the sealing volume and forming a local vacuum. The oil in the oil tank enters the teeth through the oil suction pipeline and oil suction chamber under the action of external atmospheric pressure.

As the gears rotate, the oil sucked in between the teeth is carried to the other side and enters the oil pressure chamber. At this point, the gear teeth enter meshing, gradually reducing the sealing volume, and the oil between the gears is squeezed out, forming the oil pressure process of the gear pump. When gears mesh, the tooth contact line separates the oil suction chamber and the oil pressure chamber, playing a role in oil distribution.