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A pneumatic device that drives an internal hammer up and down is known as a pneumatic actuator, utilizing air pressure to control valve movement. Examples like the bottle jack and hydraulic press demonstrate mechanical advantage and force transmission in such devices.
A pneumatic device that operates by driving an internal hammer up and down is known as a pneumatic actuator. These devices consist of a sealed chamber with a spring and a disk that controls valve movement based on air pressure. When the chamber is compressed with air, the spring compresses, allowing axial motion of the valve stem.
For example, a bottle jack utilizes a hydraulic pushrod system that provides a mechanical advantage—when the input cylinder is pushed down, the output cylinder moves up with greater force but over a lesser distance.
In a hydraulic press, a small force applied to a small piston is transmitted to a large piston, resulting in a large pressing force on an object, acting as a mechanical lever.
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