The Functionality of Air Cylinders
What are Air Cylinders?
An air cylinder(or Pneumatic Cylinder) is a mechanical device that converts the energy stored in compressed air into linear and/or rotary movement. They (cylinders) are one of the basic elements of pneumatic systems, which are used for the automation of various industrial operations (such as manufacturing, automotive, and packaging, etc.)
Air Cylinders convert energy from compressed air into mechanical energy that allows them to push, pull, or lift at great precision. Air cylinders are extremely versatile; inexpensive; and provide a more environmentally friendly alternative to hydraulic and electric actuators.
Operation of an Air Cylinder
The operation of air cylinders is relatively simply; compressed air is introduced into the cylinder through an inlet port creating pressure against the surface of the piston, therefore creating movement of the piston. This movement (piston movement) can be in either a linear or rotary direction depending on the design of the cylinder, and, in turn, this will give you the ability to provide force or torque to perform a specified task.
The direction and force of motion that occurs with the use of an air cylinder are based on what type of cylinder is in use as well as the way the cylinder is setup in the pneumatic system.
There are three main types of Air Cylinders:
- Single Acting Cylinders - used to move a piston in one direction using air pressure and returns the piston using a spring design in the cylinder.
- Double Acting Cylinders - allow compressed air to move the piston in both directions, however, this design offers more precise control of the motion than other designs.
- Rotary Air Cylinders - Designed to provide rotation instead of moving linearly.
Applications for Air Cylinders
Due to their reliability, effectiveness and ease of maintenance, Air Cylinders can be found in all types of industries. A few applications are:
- Automated assembly lines
- Packaging and bottling equipment
- Material handling and lifting systems
- Automotive braking system
- Door operation in mass transportation systems
The selection of an Air Cylinder will depend on your load requirements, the type of motion you want your cylinder to provide, and the conditions that it will be operating under.
How To Check & Maintain Air Cylinders
By keeping your air cylinder in good working order through regular maintenance, you can ensure long-term operation and efficiency of your air cylinder. Follow these steps to check and maintain your pneumatic cylinder:
- Check seals/connections for air leaks around the cylinder. Leaks create an inefficient system causing increased energy bills.
- Keep cylinders clean to avoid dust and other contaminants from damaging internal parts.
- Lubricate cylinders as required for proper piston movement.
- Inspect seals, rods, and fittings for all types of wear and replace if necessary.
- Keep an eye on the air pressure and ensure that it meets manufacturer's specifications for optimum performance.
FAQs
What do air cylinders do?
Air cylinders have a number of different uses, such as sending and experiencing forces (lifting and pushing) or rotating objects in automated systems, however they also are found in many other devices as well, including; braking systems, pneumatic clamps, industrial robots, etc.
What is an air cylinder called?
An air cylinder is also termed a "pneumatic cylinder" or "compressed air actuator".
How do I check an air cylinder?
Air cylinders are checked by looking for any leaks, along with checking for cleanliness & lubrication. Inspect seals and rods for any signs of wear and/or damage, and ensure all fittings are secure and that the pressure meets the manufacturer's recommended range.
How do cylinders work?
Cylinders use compressed air that is applied to a piston inside a cylinder to create motion or force (lifting & pushing) either in a linear or a rotary motion depending on the type of cylinder you have.
Choosing the Right Air Cylinder & Accessories
When choosing which air cylinder you need to consider all three of the factors mentioned above, including the load capacity, the application, and the environment in which the cylinder will be used.
Consult your local pneumatic expert for any accessories required to optimize performance and compatibility with your application.