Hydraulic gear pump

What should you pay attention to when installing a hydraulic gear pump? After the assembly of the hydraulic system is completed, during startup and operation, it is crucial to adhere to the following steps, avoiding undue haste. Regarding the installation of the gear pump, please consider the following points:   1. Ensure that the hydraulic gear pump is filled with hydraulic oil before installation and rotate the driving gear to allow hydraulic oil to enter the surfaces of other pumps.   2. The main shaft of the gear pump should not bear radial or axial forces and should use a flexible connection. In the case of special conditions involving radial or axial forces, please contact the company for customized solutions.   3. The concentricity between the main shaft of the gear pump and the power input shaft should not exceed 0.1mm. The connecting parts at both ends of the coupling should also ensure concentricity within 0.5mm.   4. The suction height of the gear pump should not exceed 0.5m, and the flow velocity in the oil inlet pipe should be ≤1.5m/s.   5. There should be no air leakage in the gear pump's oil inlet pipe and flange during installation, and the oil tank should not have any bubbles.   6. Before using the gear pump, carefully inspect whether the pump's inlet and outlet ports and the rotation direction are consistent with the label's indicated direction. Do not rotate it in the reverse direction. Verify the dimensions of the gear pump's shaft extension and the connecting dimensions of the power component (pay special attention to the effective length of the pump spline shaft to avoid damage caused by axial forces). Check the dimensions of the front cover mounting flange, gently place the pump into the corresponding hole, and then tighten the bolts. When installing flange blocks or threaded connectors at the inlet and outlet ports, use matching flange blocks, threaded connectors, and screws for installation.   7. If the pump is not used for an extended period, it should be separated from the prime mover and stored appropriately. When using it again, the pump needs to run without load for at least 10 minutes and undergo routine checks.   If you have procurement needs for hydraulic components or would like to obtain more information about hydraulic components, please feel free to contact us and state your requirements!

How do I choose a hydraulic gear pump?   Judgment of rotation direction of one-way gear pump: 1. Since the one-way gear oil pump has a unique rotation direction, using the wrong rotation direction will damage the internal parts of the product, so the rotation direction of the product must be correctly judged before use. method 1: Judge according to the hydraulic pilot pump nameplate. ① Face the nameplate of the hydraulic gear pump towards yourself and observe the arrow mark on the nameplate. ②When the arrow on the nameplate points to the right, the rotation direction of the gear pump (motor) is left-hand (counterclockwise code: L). ③When the arrow on the nameplate points to the left, the rotation direction of the gear pump (motor) is right-hand (clockwise code: R).   Method 2: Judgment based on matching motor (engine) ①Facing the motor (engine) power output shaft, observe the rotation direction of the power output shaft ② When the rotation direction of the power output shaft is clockwise, the matching gear pump rotation direction is left-hand (counterclockwise code: L). ③When the rotation direction of the power output shaft is counterclockwise, the matching gear pump rotation direction is right-hand (clockwise code: R)   Method 3: judge based on the actual object. Note: Under normal circumstances: One-way gear oil inlet > oil outlet Oil inlet < oil outlet of one-way gear motor. ① Correctly determine the oil outlet of the gear oil pump (motor), place the oil outlet facing you, and observe the shaft extension of the gear oil pump (motor) ②When the shaft extension is located on the left side of the oil outlet (as shown in Figure 1), the rotation direction of the gear oil pump (motor) is left-handed (counterclockwise code: L). ③When the shaft extension is located on the right side of the oil outlet (as shown in Figure 2), the rotation direction of the gear oil pump (motor) is right-hand (clockwise code: R).   2. Common installation dimensions 1. The mounting flange and shaft extension dimensions are in accordance with the requirements of GB/T2353-2005 2. The type and size of the threaded connection port shall comply with the requirements of GB/T2878-1993   3.SAB installation standards mounting flange flange dimensions(mm) Flange height(mm) Front end cover mounting hole(mm) Common oil port and flange size(mm) Two-hole mounting Four-hole mounting SAB"A" flange ⊘82.5 6.3 2-⊘11, center distance 106   20/47.6X22.2/M10 25/52.4X26.2/M10 35/69.9X35.7/M12 50/ 77.8X42.9/M12 SAB"B" flange ⊘101.6 9.4 2-⊘14, center distance 146 4-⊘14/▢89.8 SAB"C" flange ⊘127 12.7 2-⊘18, center distance 180 4-⊘14/▢114.5

What is a vane pump? Vane pump is a common centrifugal pump in various industries and application scenarios, also known as centrifugal vane pump. A vane pump pumps liquid or gas from one area to another through its rotating blades. This type of pump usually consists of a rotating impeller, pump housing, shaft (bearing) and sealing device. When the impeller rotates, it creates centrifugal force, so that the liquid or gas is thrown to the outlet of the pump. A vane pump works like a fan. When the impeller rotates, the liquid or gas is drawn into the center of the pump, and then thrown to the exit of the pump by the action of the rotating blade. This pump is suitable for a variety of applications, including industrial, construction, agriculture, domestic use, medical equipment, automotive industry, to transport water, oil, chemicals, air and more.   What is a hydraulic gear pump? Hydraulic gear pump is a common hydraulic transmission device, should be a wide range of industrial machinery, engineering machinery, agricultural machinery and other scenes; It is used to convert mechanical energy into hydraulic energy, providing pressure and flow to the hydraulic system. Hydraulic gear pump is mainly composed of gear, bearing, housing and other components. The working principle of the hydraulic gear pump is to suck in the liquid and discharge it through the rotation of the gear. Gear pumps usually have multiple structures and a variety of materials, their advantages include simple structure, small size, light weight, high efficiency, so it is widely used in many hydraulic systems.   What is the difference between a vane pump and a hydraulic gear pump? 1. Different structures: The shell of the gear pump has a pair of internal and external meshing gears, while the vane pump is composed of a rotor, a stator and a blade. 2. Different characteristics: The volume of the gear pump is small, the structure is simple, the cleanliness of the oil is not strict, and the price is relatively cheap; However, the bearing force of the gear pump is unbalanced, the wear is serious, and the leakage is large. The vane pump has uniform flow, small leakage, and can work under high pressure, mostly used in high-power hydraulic systems; However, the structure is complex, the material and processing accuracy are required to be high, the price is high, and the cleanliness of the oil is required to be high.   If you’re looking for cost-effective and timely pump replacement options, you’re looking for us. Contact us today for help in selecting the right pump for your application, or to request a product quote. 

Hydraulic Gear Pump Precautions For Use: 1. It is recommended to use L-HM46 anti-wear hydraulic oil in summer and L-HM32 anti-wear hydraulic oil or hydraulic oil with similar viscosity in winter. The back pressure of the gear motor drain port should not be greater than 0.4Mpa. 2. The working oil should be kept clean. It is recommended to install an oil filter with a filtration accuracy of 80-100um in the suction pipe of the pump and an oil filter with a filtration accuracy of 25um in the oil return line. It should be cleaned or replaced regularly according to the degree of oil contamination. 3. If there is an oil filter at the oil inlet of the oil pump, it should be ensured that its effective flow rate should be greater than twice the maximum oil suction flow rate, and should be kept smooth to prevent clogging. The capacity of the open fuel tank is greater than the flow rate of the oil pump for 3 to 4 minutes, and the capacity of the closed fuel tank is greater than the flow rate of the charge pump for 3 to 5 minutes. 4. It is strictly stipulated that before the installation of the oil system begins, oil must be filled and exhausted so that the oil pump can absorb oil in time when driving and rotating. It is best to loosen a pipe joint in the pressure pipeline and move the power component. Let the oil wave flow out until there are no bubbles and then tighten the joint (pay special attention to this operation, failure to do this is the most common cause of initial damage to the pump). After installing the pump, it should be operated with no load and short-term low load for no less than 10 minutes. Avoid starting and stopping with load. 5. The temperature of the oil pump should not exceed 80°C during continuous operation, and the instantaneous operating temperature should not exceed 100°C to avoid premature aging of the sealing components.

Hydraulic gear pump is an energy conversion device, its role is to make the flow movement, the mechanical energy into fluid energy. The pump is a power component in the hydraulic transmission system, driven by the prime mover, and takes out the mechanical energy from the output power of the prime mover, and converts it into the pressure energy of the fluid to provide the pressure oil for the system Hydraulic gear pump has the following advantages: 1. High efficiency: hydraulic gear pump usually has a high mechanical efficiency, can effectively convert the input mechanical energy into hydraulic energy, improve the overall efficiency of the system. 2. Compact design: Hydraulic gear pumps usually have a compact design that allows them to be easily installed and arranged when space is limited. 3. Simple structure and cheap price: hydraulic gear pump is composed of fewer parts and relatively simple structure, so it has high reliability and easy maintenance. 4. Low working requirements and wide application: hydraulic gear pump can be used in a variety of hydraulic systems, including construction machinery, industrial machinery, automotive, aerospace and other fields, with a wide range of applications. 5. Good self-priming performance: hydraulic gear pumps usually have good self-priming performance and can start and run quickly under low pressure conditions. 6. Low noise and vibration: Due to its simple structure and smooth operation, hydraulic gear pumps usually have low noise and vibration levels, which helps to improve the comfort and stability of the system. In general, the hydraulic gear pump has many advantages in the hydraulic transmission system, making it one of the widely used hydraulic components.

How important is it to provide dimensions when manufacturing hydraulic gear pumps: Hydraulic gear pump is the power element in the hydraulic transmission system, which is driven by the prime mover, takes the mechanical energy from the output power of the prime mover and converts it into the pressure energy of the fluid to provide the system with pressurized fluid. Then, at the place where work needs to be done, the actuating element converts the fluid pressure energy into mechanical energy and outputs it to the gear pump. Therefore, reasonable hydraulic gear pump size design and selection for the performance of the hydraulic system and the use of the effect is very important.   Hydraulic gear pump size development: Hydraulic gear pump size refers to the design, manufacture and use of hydraulic gear pumps in the process, the provisions of its size range, tolerances, inspection methods and technical requirements and other aspects of the national standard. The development of hydraulic gear pump size is to ensure the quality and performance of hydraulic gear pumps, while making different manufacturers of hydraulic gear pumps have interchangeability. Then we need to confirm what size parameters before manufacturing hydraulic gear pumps? 1. Gear diameter Gear diameter is one of the important parameters of the internal gear pump, which determines the pump flow and pressure. Usually, the larger the gear diameter, the higher the flow rate, but the lower the pressure. Conversely, the smaller the gear diameter, the smaller the flow rate, but the higher the pressure. Therefore, in the design of gear pumps, according to the specific requirements to determine the gear diameter. 2. gear teeth Gear teeth is another important parameter of the gear pump, which determines the size of the gear and the number of teeth. Usually, the larger the gear module, the smaller the number of teeth, the larger the gear. Conversely, the smaller the gear module, the more teeth, the smaller the gear. In the design of internal gear pumps, according to the specific requirements to determine the gear module. 3. Pump body length Pump body length is another important parameter of the internal gear pump, which determines the pump flow and pressure. Usually, the longer the length of the pump body, the greater the flow, but the lower the pressure. Conversely, the shorter the length of the pump body, the smaller the flow rate, but the higher the pressure. In the design of internal gear pumps, need to determine the length of the pump body, according to the specific requirements of use. 4. Shaft diameter Shaft diameter is another important parameter of the internal gear pump, which determines the pump's load-bearing capacity and stability. Usually, the larger the shaft diameter, the stronger the carrying capacity of the pump, the better the stability. Conversely, the smaller the shaft diameter, the weaker the carrying capacity of the pump, the worse the stability. In the design of internal gear pumps, you need to determine the shaft diameter according to the specific requirements of use. Sample graph:   The application of hydraulic gear pump size can be from the following aspects 1. Hydraulic gear pump design and manufacturing: hydraulic gear pump size can be used as a basis for hydraulic gear pump design and manufacturing, to ensure that the hydraulic gear pump dimensions and tolerances in line with the requirements, so as to ensure that the performance and quality of hydraulic gear pumps. 2. Hydraulic gear pump selection: hydraulic gear pump size can be used as a basis for the selection of hydraulic gear pumps, to help users choose the appropriate hydraulic gear pumps, so as to ensure that the performance of the hydraulic system and the use of the effect. 3. Hydraulic gear pump maintenance and overhaul: hydraulic gear pump size can be used as a hydraulic gear pump maintenance and overhaul basis to help users carry out maintenance and overhaul of hydraulic gear pumps, thereby extending the service life of hydraulic gear pumps.   Note:This article was inspired by the internet. If you have more unanswered questions you can contact us.