Hydraulic external gear pump can use how long? What factors influence?

Small make up know, external gear pump in the hydraulic system of the design life is 5000 h, but the ordinary short of this request, so what are the factors affecting the service life of the gear pump use? Big blue hydraulic factory today took a search unexpectedly! A, bearing the design and selection of gear pump design to contemplate their life. Gear pump scrap most situation is due to bearing damage. The ideal type of bearing materials is SF, composite materials, it is based on steel matrix, sintered copper network layer, with plastic ( Fill four fluorine hexene, modified polyformaldehyde) Provides information on the friction surface is smooth. Second, the side clearance problems in hydraulic system of the gear pump used for increased leakage, volume efficiency, pressure landing landing and scrap. The gear face accounted for 75% ~ 80% of total amount of leaked to leak. Therefore, the reasonable side clearance is very important. The causes and the gear pump (3) process to ensure the reasonable gap between before and after the gear end cover, processing and assembling of the gear pump is very important. Two end face gear and the hole axis perpendicularity error of conductor can not exceed 0. 01 mm and installed on the shaft, the axial should be in a floating state. In order to ensure the assembly after the two shaft position to each other, when two bearing hole before and after processing, center distance error should not exceed 0. 03mm。 In addition, the input shaft end fracture is common phenomenon. This required control shaft heat treatment process, make its have a certain strength and hardness, but also has higher impact toughness, avoid the fracture. Four and reasonable selection of materials and components in order to ensure the gear pump with reasonable clearance and in operation, wear resistance is an important performance index of relevant materials. Choose proper materials and proper heat treatment process is very important. Are common scrap reason oil seal leakage, and thus to choose material good oil seal, at the same time pay attention to during the processing and assembling with the oil seal and the sleeve to be strong. Five, the gear pump device using the correct device and reasonable use of gear pump, hydraulic system to extend using life of the gear pump is also very important. Gear pump input shaft neck, linking to the motor shaft alignment error not exceed 0. 01mm。 Remember that cannot be used with cohesion. Additional books should be according to the pump using stated choose appropriate hydraulic oil, and at the entrance to pump add filter, on the basis of the hydraulic system working environment filtering, and changing the hydraulic oil regularly. After a large hydraulic factory of the introduced above, I think we both know, of the main factors affecting the service life of gear pump is diverse, and at the end of the day, besides affected by consumption factories manufacturing process, the correct device and reasonable use of gear pump is very important.