Rotary screw air compressors are specialized compressors that use rotary type displacement mechanisms to compress air. Unlike piston air compressors, which force air into an enclosed space using a piston, these compressors trap air between two meshed screws, which are called rotors, and then compress that air as it moves down the pipe. They are commonly used in factories or industrial locations where a large volume of compresses air is needed, or to operate industrial air tools like impact wrenches and jackhammers.
This type of compressor has several benefits over piston compressors, but the main benefit comes with the compression process. These air compressors use a continuous sweeping motion that results in decreased pulsating or vibration, making them much quieter than piston compressors.
Rotary screw air compressors come in two types – oil-injected and oil-free. Oil-injected air compressors are the most common type, and use oil to seal and lubricate the rotors. This type of air compressor can compress air and create high pressures quickly, as well as provide high psi and CFM. Oil-free compressors are used in scenarios where oil cannot enter the airflow. This is why oil-free models are often used in applications involving food packaging or medical uses. However, oil-free options are more expensive and less effective, so they are typically only used when absolutely needed.
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