Hydraulic gear pump is composed of a pair of meshing gears each other, through the gear tooth meshing and separating formed when rotating the change of volume and oil absorption, oil pressure. When the gear mesh, mesh between the two teeth of the hydraulic oil due to the closed cannot eduction of tooth form trapped oil phenomenon. Trapped oil will produce high pressure, lateral pressure, on the shaft of the shaft bending easily, premature bearing damage, as well as consumption of motor power. Gear pump are mainly gear, shaft, pump body, valve, shaft end seal. Gear after heat treatment with high hardness and strength, and shaft installed in the replaceable shaft sleeve. In all parts of the lubrication pump are pump work automatically to achieve using the output media. Solution is in the side of the gear mesh point to the discharge of oil cavity to open a discharge groove, make the oil trapped in between the two tooth can be discharge to eliminate the phenomenon of trapped oil. Knowledge triangle manufacturer, you can reference Uliflex drive website content for understanding and learning or log on to http://www. lilainuo。 Com, regularly updated information content let everybody timely grasp industry trends, welcome the attention.