An industrial pneumatic cylinder typically contains several key components designed to convert compressed air into mechanical motion. These components include:
Cylinder Barrel (Tube): The main body of the cylinder, usually made of steel or aluminum, which houses the other components and provides the space for the piston to move.
Piston: A solid or sometimes porous metal part that moves inside the cylinder barrel. The piston is actuated by compressed air and generates force in the form of linear motion.
Piston Rod: A rod attached to the piston, extending from one end of the cylinder. It transmits the linear motion to other mechanical systems or machinery.
End Caps (or End Blocks): These are located at both ends of the cylinder and seal the barrel, often with threaded connections. The end caps typically include ports for air intake and exhaust and may contain seals to prevent air leakage.
Seals: Seals around the piston and piston rod prevent air leakage, ensuring efficient operation. These seals can be made of rubber, polyurethane, or other materials suited to the pressure and application.
Guide Bearings: Some cylinders include guide bearings to help support and stabilize the piston rod as it moves within the cylinder, reducing wear.
Ports and Fittings: Pneumatic cylinders have air intake and exhaust ports where compressed air enters and exits. These ports are connected to the pneumatic control system.
Buffer or Cushioning System: Some pneumatic cylinders are equipped with cushioning mechanisms (usually at the ends of the cylinder) to reduce shock and wear when the piston reaches the end of its stroke.
Magnetic Sensors (optional): In some cylinders, a magnetic sensor or reed switch is incorporated to detect the position of the piston for feedback to control systems.