What are Hydraulic Motors?
Hydraulic motors are rotary actuators that convert hydraulic, or liquid energy into mechanical power. They function in tandem with a hydraulic pump, which converts mechanical power into fluid, or hydraulic power. Hydraulic motors provide the force and supply the motion to move an external load.

Three common types of hydraulic motors are utilized most often today-gear, vane and piston motors-with a number of styles available among them. In addition, several other types exist that are much less commonly used, which includes gerotor or gerolor (orbital or roller superstar) motors.

Hydraulic motors could be either set- or variable-displacement, and operate either bi-directionally or uni-directionally. Fixed-displacement motors drive a load at a continuous speed while a continuous input flow is supplied. Variable-displacement motors may offer varying flow rates by changing the displacement. Fixed-displacement motors provide continuous torque; variable-displacement designs provide adjustable torque and speed.

Torque, or the turning and twisting work of the push of the electric motor, is usually expressed in in.-lb or ft-lb (Nm). Three different types of torque exist. Breakaway torque is generally utilized to define the minimum torque required to start a motor without load. This torque is based on the inner friction in the engine and describes the initial “breakaway” drive required to begin the motor. Running torque creates enough torque to keep the motor or electric motor and load running. Beginning torque is the minimal torque required to start a engine under load and can be a mixture of energy necessary to overcome the force of the strain and internal engine friction. The ratio of real torque to theoretical torque offers you the mechanical efficiency of a hydraulic electric motor.

Defining a hydraulic motor’s internal volume is done simply by looking at its displacement, therefore the oil volume that’s introduced into the motor during 1 result shaft revolution, in either in.3/rev or cc/rev, is the motor’s volume. This is often calculated by adding the volumes of the motor chambers or by rotating the motor’s shaft one convert and collecting the essential oil manually, then measuring it.