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| An actuator is a device that converts the energy of hydraulic oil pressure into straight line or rotational motion. They are like the muscles of the arms and legs in the human body. Hydraulic cylinders and hydaulic motors are actuators. |
 Hydraulic
CylinderThis converts the energy of pressure into straight line motion. |
 Hydraulic
MotorThis converts the energy of pressure into rotational motion. |
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| 1) Hydraulic Cylinders These are broken down into two types depending on what kind of motion they can perform. The two types are "single-acting cylinders" and "double-acting cylinders". |
| Single-acting Cylinders |
 These
cylinders have only one intake/outlet hole. and are moved in one
direction by hydraulic pressure, returning by their own weight or
by a spring. |
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| Double-acting Cylinders |
 These
cylinders have two intake/outlet holes, and are exteded and retracted
using hydraulic pressure. |
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| The components of these cylinders include the cylinder, piston rod, oil seal, packing, o-ring and dust seal. |
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| Output
The output value is equal to the product of the hydraulic pressure multiplied by the area of the rod on which the pressure is acting. The output of a cylinder F is proportional to the pressure P and the pressurized area A.
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| 2) Hydraulic Motors Hydraulic motors are actuators that convert hydraulic pressure into continuous rotational movement. Thier continuous is very similar to the construction of hydraulic pumps. The only difference between the two devices is that a hydraulic pump converts mechanical energy, while a hydraulic motor converts fluid energy into mechanical (rotational) energy. |
| Types of Hydraulic Motors |
| Gear motor |
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Piston motors(plunger motors) |
| Axial piston motor |
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| Features of Hydraulic Motors |
| These are the same as for hydraulic pumps. |
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