Pneumatic Piston Rod Cylinders

Pneumatic piston rod cylinders—also known as air cylinders or pneumatic actuators—are devices that transform compressed air into linear movement. These cylinders contain a piston housed inside a chamber, and the motion of the rod generates the required force. Their compact design and light weight make them ideal for shorter stroke applications such as positioning, clamping, or ejecting smaller parts.

These cylinders work by using pressurized air to push the piston along its axis. In a single-acting pneumatic cylinder, air is introduced through one port, moving the piston in one direction. A spring mechanism returns the piston when the air is released. In contrast, double-acting pneumatic cylinders feature two ports, enabling controlled extension and retraction for more versatile motion control.

Types of Pneumatic Piston Cylinders

Single-Acting Cylinders: These use air pressure to move the rod in one direction, with a spring to retract it. They are ideal for operations that only need force in one direction, like ejection or part positioning.

Double-Acting Cylinders: Compressed air powers movement in both directions, giving precise bidirectional control. They are widely used in automation and pressing tasks due to their enhanced functionality.

Standard Piston Rod Cylinders: These cylinders feature an external rod extending from the chamber to apply linear force. Available in a variety of dimensions, they are suitable for use in compact automation systems, packaging lines, and material transfer applications.

Rodless Cylinders: These are designed to produce linear motion without a protruding rod, saving space. They are commonly used in tight environments such as AGVs (automated guided vehicles), conveyor units, and pick-and-place systems. Types include magnetic-coupling, cable-actuated, and slotted variants.

Choosing the Right Pneumatic Cylinder: Sizing & Specs

When selecting a pneumatic cylinder, it’s important to evaluate several factors to ensure performance and compatibility with your system:

  • Stroke Length: This determines how far the piston rod moves. Match it with the movement required by your process.
  • Bore Diameter: The cylinder’s internal diameter influences the output force. Larger bores produce more force, essential for heavy-duty tasks.
  • Operating Pressure: Ensure the cylinder can handle the air pressure levels used in your setup—common ratings include up to 1 MPa.
  • Mounting Style: Choose a mounting type—such as flange, foot, or clevis—that offers stable and secure installation for your equipment layout.

Common Applications for Pneumatic Piston Rod Cylinders

  • Manufacturing: Used in production lines for tasks like pressing, clamping, and aligning parts. They are especially valued for their precision and repeatability.
  • Packaging: Ideal for processes like pushing items into cartons, sealing, or labeling, thanks to their speed and reliability.
  • Material Handling: Employed to automate lifting, moving, and sorting of goods in warehouses and distribution centers.
  • Automotive: Crucial in automated assembly and testing systems, including robotic arms and welding stations.

Why Choose Pneumatic Resources Australia?

As a trusted supplier of pneumatic piston cylinders, Pneumatic Resources Australia provides a wide assortment of high-quality components to suit every application. Partnering with industry leader SMC, we offer durable and high-performance piston rod cylinders, including double-acting and compact designs.

We also stock essential accessories like flow regulators and DIN rail mounting brackets, giving you a complete solution for your pneumatic setups. Enjoy competitive pricing, nationwide delivery, and exceptional customer support when you shop with us. Explore our delivery details on our website and build your pneumatic systems with confidence. Place your order today with Pneumatic Resources Australia!

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Pneumatic Cylinder - 20mm Bore, 30mm Stroke, CD85 Series, Double Acting, SMC, CD85N20-300-A

CD85N20-300-A
The SMC C85 series single rod, double acting, conforms to ISO 6432 and CETOP RP52P. The C85 is available in bore sizes 20mm through 300mm stroke. A unique rod packing's design prevents entry of dust and the effectiveness of the seal is such that the C85 is suitable for use in extremely dusty environments. With abrasion resistant packing's and replaceable piston rod seals, the C85 offers exceptional service life Auto switch capable Easy accurate mounting Minimized side clearance Ambient and fluid temperature -20 °C to 80 °C Without auto switch (No freezing)
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Pneumatic Cylinder - 20mm Bore, 350mm Stroke, C85 Series, Double Acting, SMC, CD85N20-350-B-X2018

CD85N20-350-B-X2018
The SMC C85 series pneumatic air cylinder conforms to ISO 6432 and CETOP RP52P. It is available in bore sizes from 8mm to 25mm with standard strokes ranging from 10mm to 300mm. A unique rod packing design prevents entry of dust and the effectiveness of the seal is such that it is suitable for use in extremely dusty environments. With abrasion resistant packing's and replaceable nose seals, it offers exceptional service life. High quality bronze bush in clevis bearing extends the life of cylinder Double swaging of the end covers of the barrel provides an absolutely air tight union Easy accurate mounting Minimized side clearance
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Pneumatic Cylinder - 20mm Bore, 40mm Stroke, C85 Series, Single Acting, SMC, C85N20-40S

C85N20-40S
The SMC C85-S/T series has single rod, single acting, conforms to ISO 6432 and it has 25 mm of bore size. A unique rod packing's design prevents entry of dust and the effectiveness of the seal is such that the C85 is suitable for use in extremely dusty environments. With abrasion resistant packing's and replaceable piston rod seals, it offers exceptional service life. Ambient and fluid temperature ranges from -10 to 60°C Auto switch capable
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Pneumatic Cylinder - 20mm Bore, 500mm Stroke, CD85 Series, Double Acting, SMC, CD85N20-500C-B-X2018

CD85N20-500C-B-X2018
The SMC C85 series single rod, double acting, conforms to ISO 6432 and CETOP RP52P. The C85 is available in bore sizes 20mm through 500mm stroke. A unique rod packing's design prevents entry of dust and the effectiveness of the seal is such that the C85 is suitable for use in extremely dusty environments. With abrasion resistant packing's and replaceable piston rod seals, the C85 offers exceptional service life Auto switch capable Easy accurate mounting Minimized side clearance Ambient and fluid temperature -20 °C to 80 °C Without auto switch (No freezing)
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Pneumatic Cylinder - 20mm Bore, 50mm Stroke, C85N Series, Single Acting, SMC, C85N20-50T

C85N20-50T
The SMC series C85 offered double acting standard cylinder. It has a single rod. ISO 6432 Round Body Cylinder Bore sizes (mm) 8, 10, 12, 16, 20, 25 Standard strokes up to 300 mm Cylinder variations Non-rotating, direct mount, ATEX
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Pneumatic Cylinder - 20mm Bore, 50mm Stroke, CQ2 Series, Double Acting, SMC, CDQ2A20-50DZ

CDQ2A20-50DZ
The SMC CQ2 series compact cylinder has remodelled with a new body to get more flexibility and it has double acting, single rod with auto switch mounting groove. It is possible to mount auto switches on any of the 4 surfaces. Ambient and fluid temperature ranges from -10 to 60°C Small auto switch Reduction in labour for design Lighter weight
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Pneumatic Cylinder - 20mm Bore, 550mm Stroke, CD85 Series, Double Acting, SMC, CD85N20-550-B-X2018

CD85N20-550-B-X2018
The SMC C85 series single rod, double acting, conforms to ISO 6432 and CETOP RP52P. The C85 is available in bore sizes 20mm through 550mm stroke. A unique rod packing's design prevents entry of dust and the effectiveness of the seal is such that the C85 is suitable for use in extremely dusty environments. With abrasion resistant packing's and replaceable piston rod seals, the C85 offers exceptional service life Auto switch capable Easy accurate mounting Minimized side clearance Ambient and fluid temperature -20 °C to 80 °C Without auto switch (No freezing)
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Pneumatic Cylinder - 20mm Bore, 5mm Stroke, CDU Series, Single Acting, SMC, CDUK20-5S

CDUK20-5S
The SMC CUK series single non-rotating rod, double acting free mount cylinder saves space and allow direct and precise mounting. It has 20 mm of bore sizes with stroke lengths up to 5mm. It include auto-switch capabilities, free mount choices, recessed switch mounting grooves and rubber bumper standard. Ambient and fluid temperature –10 to 60°C (with auto switch) Non-lube lubrication Maximum operating pressure 0.7MPa
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Pneumatic Cylinder - 20mm Bore, 5mm Stroke, CQ2 Series, Single Acting, SMC, CQ2B20-5S

CQ2B20-5S
The SMC series CQ2 offers compact cylinder with single acting and single rod. Improved auto-switch mounting possibilities plus an overall reduction of cylinder weight of between 5 -13% depending on the model. Minimise overall machine weight and increase the productivity Save space in your machines Fit CQ2 to your application requirements
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Pneumatic Cylinder - 20mm Bore, 5mm Stroke, CQM Series, Double Acting, SMC, CDQMB20-5

CDQMB20-5
The SMC CQM series is a compact cylinder integrated with a guide rod and plate. It is non-rotating accuracy is 0.2 or less and it allows a work piece to be mounted directly to the tooling plate. The auto switched are mountable/removable even when the plate is retracted. It used double acting and single rod. Ambient and fluid temperature ranges from -10 to 60°C (with auto switch) Lateral load resisting 2–4 times Mounting dimension compatible with the CQS, CQ2 series
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Pneumatic Cylinder - 20mm Bore, 600mm Stroke, CD85 Series, Double Acting, SMC, CD85N20-600-B-X2018

CD85N20-600-B-X2018
The SMC C85 series single rod, double acting, conforms to ISO 6432 and CETOP RP52P. The C85 is available in bore sizes 20mm through 600mm stroke. A unique rod packing's design prevents entry of dust and the effectiveness of the seal is such that the C85 is suitable for use in extremely dusty environments. With abrasion resistant packing's and replaceable piston rod seals, the C85 offers exceptional service life Auto switch capable Easy accurate mounting Minimized side clearance Ambient and fluid temperature -20 °C to 80 °C Without auto switch (No freezing)
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Pneumatic Cylinder - 20mm Bore, 60mm Stroke, CD55 Series, Double Acting, SMC, CD55B20-60M

CD55B20-60M
The SMC C55 series pneumatic compact cylinder made from hard anodised aluminium alloy and it has in built magnet. It has stroke length of up to 60 mm including the benefits of standardised mounting dimensions. It achieves outstanding load performance due to its unique rubber bumper, piston wear ring, and rod bushing. Double acting Possible to mount small auto switches on 4 surfaces Conforms with the ISO 21287 standard
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