The main basis for selecting a hydraulic motor is the host's requirements for the hydraulic system, such as torque, speed, working pressure, displacement, appearance and connection dimensions, volumetric efficiency, total efficiency, as well as quality, price, supply of goods, and convenience of use and maintenance.
2. There are many types of hydraulic motors with different characteristics, and suitable hydraulic motors should be selected for specific purposes and working conditions. Low speed motors can be selected for low-speed operation, or high-speed motor acceleration and deceleration devices can be used. In the selection of the two options, it should be based on the structure and space situation, equipment cost, and whether the driving torque is reasonable.
3. After determining the type of motor to be used, several specifications that can meet the requirements can be selected from the hydraulic motor product series based on the required speed and torque, and then comprehensive analysis can be carried out. That is, first use the characteristic curves of each specification to find (or calculate) the corresponding pressure drop, flow rate, and efficiency; Then, a technical and economic evaluation is used to determine the specific specifications. If the original cost is the most important, a motor that meets both torque requirements and reduces system flow and pressure should be selected, which can make the hydraulic source, control valve, and pipeline specifications smaller. If the operating cost is the highest, the motor with the highest overall efficiency should be selected; If lifespan is the most important, the motor with the lowest pressure drop should be chosen, and the final product chosen is often a compromise of the above solution.
