hydraulic a motor
How to choose a hydraulic motor?
1. Selection basis and general method of hydraulic motor
(1) The main basis for selecting the hydraulic motor is the requirements of the main engine for the hydraulic system, such as torque, speed, working pressure, displacement, shape and connection size, volumetric efficiency, total efficiency, and quality, price, supply and ease of use and maintenance. Sex and so on.
(2) There are many types of hydraulic motors. Different characteristics, should be selected according to the specific use and its working conditions, refer to the table below to select the appropriate hydraulic motor. Low-speed operation can be selected from low-speed motors or high-speed motor acceleration and deceleration. In the choice of two options. It should be selected according to the structure and space conditions, equipment cost, and reasonable driving torque.
(3) After determining the type of motor used, several kinds of specifications that can meet the needs can be selected from the hydraulic motor product series (see the table below) according to the required speed and torque, and then comprehensive analysis, that is, first use The characteristic curves of various specifications detect (or calculate) the corresponding pressure drop, flow rate and efficiency;
Then, use technical and economic evaluation to determine the specific specifications, if the original cost is the most important. The motor should be selected to meet both the torque requirement and the system flow and the pressure is low, so that the hydraulic source, control valve and piping specifications are small. If the operating cost is the most important, the motor with high total efficiency should be selected; if the life is the most important, the motor with the smallest pressure drop should be selected, and the final product selected is mostly a compromise of the description.
Comprehensive comparison of performance of various hydraulic motors
2. Precautions when using hydraulic motor
(1) The hydraulic motor is usually allowed to operate at a pressure exceeding 20%-so% of the rated pressure in a short time, but the instantaneous maximum pressure cannot occur at the same time as the maximum speed.
(2) There is a certain limit on the back pressure of the return line of the hydraulic motor. When the back pressure is large, the leaking oil pipe must be installed.
(3) The maximum torque and maximum speed of the hydraulic motor should not normally occur at the same time. The actual speed should not be lower than the minimum motor speed to avoid creep. When the required speed of the system is low, and the motor is not easy to meet the working requirements in terms of speed, torque and other performance parameters, a speed reduction mechanism can be added between the motor and the host driven by the motor. In order to run smoothly at very low speeds, the motor
The leak must be constant, with a certain back pressure back pressure and at least 35 fflll12/. Oil viscosity.
(4) In order to prevent cavitation or loss of braking capability of the brake motor operating as a pump, it should be ensured that the suction port of the motor has sufficient replenishing pressure at this time, and it can pass through the charge pump or open circuit in the closed circuit. The back pressure valve is used to realize; when the hydraulic motor drives the large inertia load, the bypass check valve in parallel with the motor should be set in the hydraulic system to avoid downtime.
The motor of inertial motion in the process is short of oil.
(5) For cycloidal hydraulic motors that cannot withstand additional axial and radial forces, or hydraulic motors can withstand additional axial and radial forces, but the actual axial and radial forces of the load are greater than the axial forces allowed by the hydraulic motor. For radial forces, consider using a flexible coupling to connect the motor output shaft to the working mechanism. Motors that require low speed operation must be checked for their lowest stable speed.
(6) It is necessary to lock the motor for a long time to prevent the load from moving. The spring-loaded hydraulic release mechanical brake should be used on the motor shaft.
(7) Hydraulic motor should not be disassembled after failure.
Shijiazhuang Hanjiu Technology Co.,Ltd
Director hanhan // E-mail: manager@sjzhjsm.com // Skype: Simon-Hanjiu Hydraulics //
WhatsApp: +8618903213886 // Website: http://www.hjhydraulic.com
1. Selection basis and general method of hydraulic motor
(1) The main basis for selecting the hydraulic motor is the requirements of the main engine for the hydraulic system, such as torque, speed, working pressure, displacement, shape and connection size, volumetric efficiency, total efficiency, and quality, price, supply and ease of use and maintenance. Sex and so on.
(2) There are many types of hydraulic motors. Different characteristics, should be selected according to the specific use and its working conditions, refer to the table below to select the appropriate hydraulic motor. Low-speed operation can be selected from low-speed motors or high-speed motor acceleration and deceleration. In the choice of two options. It should be selected according to the structure and space conditions, equipment cost, and reasonable driving torque.
(3) After determining the type of motor used, several kinds of specifications that can meet the needs can be selected from the hydraulic motor product series (see the table below) according to the required speed and torque, and then comprehensive analysis, that is, first use The characteristic curves of various specifications detect (or calculate) the corresponding pressure drop, flow rate and efficiency;
Then, use technical and economic evaluation to determine the specific specifications, if the original cost is the most important. The motor should be selected to meet both the torque requirement and the system flow and the pressure is low, so that the hydraulic source, control valve and piping specifications are small. If the operating cost is the most important, the motor with high total efficiency should be selected; if the life is the most important, the motor with the smallest pressure drop should be selected, and the final product selected is mostly a compromise of the description.
Comprehensive comparison of performance of various hydraulic motors
2. Precautions when using hydraulic motor
(1) The hydraulic motor is usually allowed to operate at a pressure exceeding 20%-so% of the rated pressure in a short time, but the instantaneous maximum pressure cannot occur at the same time as the maximum speed.
(2) There is a certain limit on the back pressure of the return line of the hydraulic motor. When the back pressure is large, the leaking oil pipe must be installed.
(3) The maximum torque and maximum speed of the hydraulic motor should not normally occur at the same time. The actual speed should not be lower than the minimum motor speed to avoid creep. When the required speed of the system is low, and the motor is not easy to meet the working requirements in terms of speed, torque and other performance parameters, a speed reduction mechanism can be added between the motor and the host driven by the motor. In order to run smoothly at very low speeds, the motor
The leak must be constant, with a certain back pressure back pressure and at least 35 fflll12/. Oil viscosity.
(4) In order to prevent cavitation or loss of braking capability of the brake motor operating as a pump, it should be ensured that the suction port of the motor has sufficient replenishing pressure at this time, and it can pass through the charge pump or open circuit in the closed circuit. The back pressure valve is used to realize; when the hydraulic motor drives the large inertia load, the bypass check valve in parallel with the motor should be set in the hydraulic system to avoid downtime.
The motor of inertial motion in the process is short of oil.
(5) For cycloidal hydraulic motors that cannot withstand additional axial and radial forces, or hydraulic motors can withstand additional axial and radial forces, but the actual axial and radial forces of the load are greater than the axial forces allowed by the hydraulic motor. For radial forces, consider using a flexible coupling to connect the motor output shaft to the working mechanism. Motors that require low speed operation must be checked for their lowest stable speed.
(6) It is necessary to lock the motor for a long time to prevent the load from moving. The spring-loaded hydraulic release mechanical brake should be used on the motor shaft.
(7) Hydraulic motor should not be disassembled after failure.
Shijiazhuang Hanjiu Technology Co.,Ltd
Director hanhan // E-mail: manager@sjzhjsm.com // Skype: Simon-Hanjiu Hydraulics //
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