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We can find three groups of motion actuators classified according to the
source of energy on which they depend:
 Electric actuators
 Pneumatic actuators
 Hydraulic actuators

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The environmental characteristics of the place where the actuator will work are very
important

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Each type of actuator has characteristics that make it the optimal solution for the
action to be carried out, without there being a direct option for either case. At the time of
choose, we will have to take into account the type of movement desired, the necessary force, the
availability of the actuator power source, the feasibility of achieving it, the cost of
operation, maintenance, spare parts, etc.

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How a Industrial Pneumatic Systems Works And The Five Most Common Elements Used

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Understanding a Basic Hydraulic System with Transparent Componenets

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It employs a pressurized liquid as a source.
Generally designed as closed system.
The system is complicated.
Heavier in weight.
Pumps are used to provide pressurized liquids.
Automatic lubrication is provided.
The system slows down when leakage occurs.

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It employs a compressed gas, usually air.
Usually designed as open system.
The system is easy.
Lighter in weight.
Compressors are used to provide compressed gases.
Special Arrangements for lubrication are needed.
Leakage dos not affect the system much.

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A pneumatic system usually operates at 5-10 bar

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An oil hydraulic system operates at pressures up to 700 bar

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(A Pneumatic System)

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(A Hydraulic System )