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  • Aggisxjetl Hydraulic Motor China - Understanding Hydraulic Motors: Several Terms Did you know that there are 7 different types of torque associated with hydraulic motors? Are you sure you know what the maximum and minimum motor speeds mean? If you are interested in comments on these terms, it is very important for you to place these Hydraulic Motor China together with the terminology dictionary related to hydraulic motors.   Torque   Torque, theoretical torque, motor rated torque, operating torque, starting torque, split torque, stall torque, torque ripple are very important terms in hydraulic motors, referring to the ability of the motor to rotate. It is directly related to the available system pressure and motor displacement.   Theoretical torque is the torque available on the shaft, but keep in mind that it has perfect efficiency without mechanical losses - this is unrealistic. The ability to better measure the hydraulic motor will be the motor torque rating: this is the available torque for a specific pressure drop across the motor.   You may have heard of torque, but you may not know that it has two different definitions. If the running torque refers to the load, then it is the torque required to keep the load rotating. Whentorque refers to the motor itself, it is the actual torque produced by the motor to keep the load rotating.   The operating torque takes into account the inherent low efficiency of the hydraulic motor and will account for a percentage of the theoretical motor torque. Note that the operating torque is directly related to the pressure drop across the motor - if the pressure drop changes, the operating torque will also change.   Another type of torque is the starting torque. The term starting torque refers to how much torque the hydraulic motor can generate from a dead point. This is similar to the starting torque, even if the fixed load moves the required torque. Stall torque is the force required to stop the motor.   Finally, there is a torque ripple: the difference between the minimum torque and the maximum torque that can be delivered at a given pressure during a single revolution of the motor.   Please note that the starting torque is almost always less than the torque in the hydraulic motor. This makes sense when you think it's easier to keep a running load than to run a load from a dead stop.   effectiveness   Mechanical efficiency: The mechanical efficiency of a hydraulic motor is only torque transmission / theoretical torque. Of course, it will be less than 100%. This will be different from the total efficiency, which is the ratio of output power to input power.   Motor displacement   Motor displacement, fixed displacement hydraulic motor, variable displacement hydraulic motor   A distinct feature of hydraulic motors is their motor displacement.   The motor displacement is the volume of fluid required to make one revolution of the output shaft. Fixed displacement hydraulic motors provide constant torque and variable speed by varying the flow of hydraulic fluid to the motor.   Variable displacement hydraulic motors change torque and speed. They do this by keeping the input flow constant and the pressure constant but changing the displacement. Adjust the torque speed ratio when the displacement changes.   Operational pressure   The working pressure of the hydraulic motor is the pump pressure minus the line loss. It is the pressure at which the motor is operating normally, sometimes referred to as system pressure.   Motor speed   Motor speed, maximum motor speed, minimum motor speed   Another problem with hydraulic motors is the speed of the motor. The motor speed is related to the volume of hydraulic fluid delivered to the motor and the actual motor displacement. Hydraulic motors have minimum and maximum motor speeds, but you need to be aware of the definition - they may not be your idea!   The maximum motor speed is the speed at a given inlet pressure, and the motor can maintain that speed for a limited time without damaging the motor. The minimum motor speed is the slowest, uninterrupted speed that the motor output shaft can provide.   One of the biggest obstacles to overcome in any topic is the terminology. This should get you started on the key terms you need to know about hydraulic motors.
    Jan 12