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 - 25mm Bore, 25mm Stroke, CG5 Series, Double Acting, SMC, CG5EN25SR-25

CG5EN25SR-25
The SMC CG5-S series is a stainless steel cylinder, perfect for use in wash down applications such as food processing machinery requiring intense cleaning. The use of non-toxic additives allows confident use in equipment for foods, beverages and medical products, etc. It can be disassembled, allowing replacement of seals, which promotes an extended service life. It has double acting with single rod. Auto switch capability Special scraper prevents water from entering cylinder Ambient and fluid temperature without auto switch –10 to 70°C,
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Pneumatic Cylinder - 25mm Bore, 25mm Stroke, CQ2 Series, Double Acting, SMC, CDQ2KB25-25DZ

CDQ2KB25-25DZ
The SMC CQ2K 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 - 25mm Bore, 25mm Stroke, CQS Series, Double Acting, SMC, CDQSB25-250DC

CDQSB25-250DC
The SMC CQS single rod, double acting version of the compact cylinder is available for those small bore cylinder application where saving space is a concern. It used both switch capable and non-switch capable body style and has auto switch mounting allow for flexible designing requirements. The long stroke version incorporate a wear band and thicker piston to handle the increased bearing need of the longer stroke. Ambient and fluid temperature ranges from -10 to 60°C (with auto switch) Reduction in labour for design Reduction of installation space
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Pneumatic Cylinder - 25mm Bore, 25mm Stroke, RQ Series, Double Acting, SMC, RDQB25-25

RDQB25-25
The SMC RQ series air cushion construction allow to retain the merits of a compact cylinder. The unique air cushion construction eliminate the cushion ring used in conventional type air cushions, which reduce the overall length of the cylinder. It used maximum operating pressure 0.1 MPa and used non-lune pneumatic type. More compact installation space possible Improved noise reduction Improved repeatability Noise reduction
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Pneumatic Cylinder - 25mm Bore, 30mm Stroke, CD55 Series, Double Acting, SMC, CD55B25-30M

CD55B25-30M
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 30 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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Pneumatic Cylinder - 25mm Bore, 30mm Stroke, CQM Series, Double Acting, SMC, CDQMB25-30

CDQMB25-30
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 - 25mm Bore, 350mm Stroke, CD85 Series, Double Acting, SMC, CD85N25-350C-B-X2018

CD85N25-350C-B-X2018
The SMC C85 series single rod, double acting, conforms to ISO 6432 and CETOP RP52P. The C85 is available in bore sizes 25mm through 35mm 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 - 25mm Bore, 35mm Stroke, CQ2 Series, Double Acting, SMC, CQ2B25-35D

CQ2B25-35D
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 (with auto switch) Small auto switch Reduction in labour for design Lighter weight
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Pneumatic Cylinder - 25mm Bore, 400mm Stroke, C85 Series, Double Acting, SMC, CD85N25-400C-B-X2018

CD85N25-400C-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 - 25mm Bore, 40mm Stroke, C85 Series, Double Acting, SMC, C85N25-40T

C85N25-40T
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 - 25mm Bore, 450mm Stroke, CD85 Series, Double Acting, SMC, CD85N25-450-B-X2018

CD85N25-450-B-X2018
The SMC C85 series single rod, double acting, conforms to ISO 6432 and CETOP RP52P. The C85 is available in bore sizes 25mm through 450mm 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 - 25mm Bore, 50mm Stroke, CG5 Series, Double Acting, SMC, CDG3BN25-50

CDG3BN25-50
The SMC CG3 series double acting, single rod cylinder now offers a space saving, compact cylinder with 20 mm bore size. Auto switch capable RoHs compliant
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