The most popular pneumatic actuator style uses compressed air acting on a piston inside a cylinder to move a load. Single-acting cylinders have a single port (air inlet) to extend the piston; an internal spring or sometimes gravity retracts the piston. Double-acting cylinders have separate ports to extend and retract the piston.
There are thousands of industrial applications requiring a linear motion during their operation sequence. One of the simplest and most cost effective ways to accomplish this is with a pneumatic cylinder. Rodded cylinders consist of a piston and rod moving on a linear path inside a closed cylinder when air is applied. This actuator style can be sub-divided into two types based on the operating principle: single acting and double acting.
Pneumatic cylinders are very clean operating devices because the operating fluid is a gas, which prevents drippings from leakage that could contaminate the surroundings. A wide range of body styles, stroke lengths, and bore sizes are available to choose from, with accessories that include position switches and mounting brackets.
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Non-repairable cylinders, also known as throw-away cylinders, are designed so that no repairs can be made if/when they no longer function properly; however, replacing these parts is simple and typically costs less in the long run.
Compact stainless steel round body cylinders meet a broad range of applications where space is a concern. These small cylinders are also sometimes referred to as mini cylinders, mini actuators, flat cylinders or pancake cylinders.
NFPA tie-rod cylinders are held together by four or more threaded tie bolts that run the length of the cylinder and meet the standards established by the National Fire Protection Association. These cylinders are ideal for applications where abusive conditions are a concern.
Guided pneumatic cylinders include two adjacent rods to aid in operation stability and position accuracy. The two guide rods and piston are attached to a yoke plate, which prevents the piston from rotating when transverse loads are applied.
These non-repairable cylinders feature all stainless steel components to ensure a long cylinder life.
ISO 15552 cylinders are very similar in design to NFPA cylinders (US version). They have dimensions that conform to the ISO 15552 standard and include magnetic material on the piston for sensing position.
Space-saving, compact air cylinders in metric sizes meet a broad range of limited space applications. These high quality cylinders are constructed with hard anodized extruded aluminum bodies and end caps.
Accessories for air cylinders include mounting hardware and brackets such as clevis joints, mounting brackets, rod end connectors and locking nuts.
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