Gear motors reversing the structure in order to meet the requirements, equal access to the oil port with symmetry, with separate leakage oil port, the bearing part leak oil output housing outside; in order to reduce friction torque starts (domestic) pump agency, by rolling; in order to reduce torque ripple hydraulic pumps, hydraulic motors, gear teeth to be more than a gear pump. Gear hydraulic motor by dry poor sealing, low rent capacity efficiency, enter the oil pressure is not too high, you can not have a greater torque. And instantaneous speed and torque with position change meshing point varies (domestic) hydraulic refinement, so gear hydraulic motor is only suitable for high speed and small torque applications. Generally used for construction machinery, agricultural machinery, and even less demanding torque equipment. High vacuum gear pump works: high vacuum pump gears meshing with each other to rely on the primary driven gear pump oil into the suction chamber and the pressure chamber. Since the suction chamber intermeshing teeth gradually disengaged, the sealing working volume increases (domestic) pump maintenance, a partial vacuum, and therefore the oil tank under the effect of ambient atmospheric pressure, through the suction pipe into the suction chamber, The tank is filled teeth, and with the gear rotates, the oil pressure oil chamber to the left side. In the pressure side of the oil region, where due to the teeth gradually into the engagement, to seal the working chamber volume continues to decrease, the oil will be squeezed out, transporting oil from the pressure chamber to the pressure line to go. (Domestic) pump maintenance, crystal creating hydraulic (certified), the hydraulic pump by Jinan Jing Chong hydraulic machinery Limited. Jinan Jing Chong Hydraulic Machinery Co., Ltd. (www.jnjcyy.com) (www.jnjcyy.com) Shandong Jinan, mining machinery leaders, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, the maximum meet customer needs. In the crystal to create a hydraulic leadership with the staff warmly welcome all inquiries negotiations to create the crystal to create a better future for the hydraulic.