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 Piston Rod Cylinder - 20mm Bore, 40mm Stroke, CUK Series, Double Acting, SMC, CDUK20-40D

CDUK20-40D
Bore sizes from 6mm to 32mm available Stroke lengths up to 100mm Any surfaces can be used for mounting Space saving Auto-switch capable
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Pneumatic Piston Rod Cylinder - 20mm Bore, 50mm Stroke, C85 Series, Double Acting, SMC, CD85N20-50-B

CD85N20-50-B
SMC C85 Pneumatic Cylinders SMC C85 cylinders conform to ISO 6432 and CETOP RP52P standards, offer 100% mounting repeatability accuracy, incorporate abrasion-resistant seals, and a replaceable piston rod seal. The cylinders are corrosion-resistant, with the barrel and piston rod manufactured from stainless steel, double-swaged anodised aluminium end caps, and offer an exceptional service life. The double-swaged end caps provide an air tight seal. The cylinders offer high dust resistance through the use of a specially-designed and unique dust seal, making SMC C85 pneumatic cylinders suitable for use in extremely dusty environments. A low friction design that incorporates elastomer cushion seals allows the the cylinders to operate at speeds up to 1500 mm/s. C85 cylinders are suppied with a piston rod locknut and nose-mounting nut; installation is made easy through the use of large spanner flats and the space-saving design.
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Pneumatic Piston Rod Cylinder - 20mm Bore, 50mm Stroke, C85 Series, Double Acting, SMC, CD85N20-50C-B

CD85N20-50C-B
SMC C85 Pneumatic Cylinders SMC C85 cylinders conform to ISO 6432 and CETOP RP52P standards, offer 100% mounting repeatability accuracy, incorporate abrasion-resistant seals, and a replaceable piston rod seal. The cylinders are corrosion-resistant, with the barrel and piston rod manufactured from stainless steel, double-swaged anodised aluminium end caps, and offer an exceptional service life. The double-swaged end caps provide an air tight seal. The cylinders offer high dust resistance through the use of a specially-designed and unique dust seal, making SMC C85 pneumatic cylinders suitable for use in extremely dusty environments. A low friction design that incorporates elastomer cushion seals allows the the cylinders to operate at speeds up to 1500 mm/s. C85 cylinders are suppied with a piston rod locknut and nose-mounting nut; installation is made easy through the use of large spanner flats and the space-saving design.
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Pneumatic Piston Rod Cylinder - 20mm Bore, 50mm Stroke, C85 Series, Single Acting, SMC, C85N20-50S

C85N20-50S
SMC C85 Pneumatic Cylinders SMC C85 cylinders conform to ISO 6432 and CETOP RP52P standards, offer 100% mounting repeatability accuracy, incorporate abrasion-resistant seals, and a replaceable piston rod seal. The cylinders are corrosion-resistant, with the barrel and piston rod manufactured from stainless steel, double-swaged anodised aluminium end caps, and offer an exceptional service life. The double-swaged end caps provide an air tight seal. The cylinders offer high dust resistance through the use of a specially-designed and unique dust seal, making SMC C85 pneumatic cylinders suitable for use in extremely dusty environments. A low friction design that incorporates elastomer cushion seals allows the the cylinders to operate at speeds up to 1500 mm/s. C85 cylinders are suppied with a piston rod locknut and nose-mounting nut; installation is made easy through the use of large spanner flats and the space-saving design.
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Pneumatic Piston Rod Cylinder - 20mm Bore, 50mm Stroke, CDG1 Series, Double Acting, SMC, CDG1BN20-50Z

CDG1BN20-50Z
CG1 Air Cylinder The CG1 series from SMC are precision air cylinders which have various bore sizes to meet the any application need. These cylinders allow low break away pressure, smooth stroke action, has auto switch capability and multiple mounting options. Air Cylinder, Double Acting, Single Rod Built-in magnet Proof pressure: 1.5 MPa Maximum operating pressure: 1.0 MPa Minimum operating pressure: 0.05 MPa Cushion: Rubber bumper
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Pneumatic Piston Rod Cylinder - 20mm Bore, 50mm Stroke, CU Series, Double Acting, SMC, CDU20-50D

CDU20-50D
CU Series Cylinders The series CU free mount cylinder saves space and allows direct and precise mounting, Options include auto-switch capabilities, free mount choices, recessed switch mounting grooves, non-rotating rod, single and double acting and rubber bumpers standard. Maximum operating pressure 7 bar, 10.5 bar proof pressure Ambient and fluid temperature 5°C to 60°C Lubrication not required Rubber cushion to both sides Stroke allowance +1.0mm Port size M5, except 32Ø which is Rc(PT) 1//8 in. CDU 10 - 32mm Diameter A range of double acting, free-mount rectangular cylinders, with piston rod operation. Available as either standard or non-rotating. Rectangular design allows for precise and direct mounting. Each cylinder has a magnetic piston as standard.
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Pneumatic Piston Rod Cylinder - 20mm Bore, 50mm Stroke, CU Series, Double Acting, SMC, CU20-50D

CU20-50D
The SMC free mount cylinder has multiple surface direct mounted rectangular body with no brackets allows freedom of the mounting surface. It has auto-switch capabilities, free mount choices, recessed switch mounting grooves and rubber bumpers standard. Non-rotating Rod Bore sizes from 6mm to 32mm available Stroke lengths up to 50mm
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Pneumatic Piston Rod Cylinder - 20mm Bore, 50mm Stroke, CUJ20 Series, Double Acting, SMC, CDUJS20-50DM

CDUJS20-50DM
The SMC miniature free mount space saving compact cylinder. It is available in 4mm to 10mm bore sizes with stroke lengths up to 20mm for double acting and 10mm for single acting. It has wiring and piping on one side which allows more efficient installatio Easy seal replacement Short pitch mounting is possible RoHS compliant Auto switch capabilities Double and single acting
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Pneumatic Piston Rod Cylinder - 20mm Bore, 50mm Stroke, CUK Series, Double Acting, SMC, CDUK20-50D

CDUK20-50D
CU Series Cylinders The series CU free mount cylinder saves space and allows direct and precise mounting, Options include auto-switch capabilities, free mount choices, recessed switch mounting grooves, non-rotating rod, single and double acting and rubber bumpers standard. Maximum operating pressure 7 bar, 10.5 bar proof pressure Ambient and fluid temperature 5°C to 60°C Lubrication not required Rubber cushion to both sides Stroke allowance +1.0mm Port size M5, except 32Ø which is Rc(PT) 1//8 in. CDU 10 - 32mm Diameter A range of double acting, free-mount rectangular cylinders, with piston rod operation. Available as either standard or non-rotating. Rectangular design allows for precise and direct mounting. Each cylinder has a magnetic piston as standard.
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Pneumatic Piston Rod Cylinder - 20mm Bore, 50mm Stroke, ZCUK Series, Double Acting, SMC, ZCDUKQ20-50D

ZCDUKQ20-50D
Cylinders Hollow piston rod allows vacuum connection Vacuum pad can be mounted directly to piston rod using female thread vacuum pads, available separately Double acting Non-rotating piston rod, accuracy ±0.8º (16mm dia), ±0.5º (20mm dia) Proof pressure 10.5 bar Operating pressure range 0.7 bar, 16mm dia and 0.6 bar, 20mm dia (min) to 7 bar (max) Vacuum port pressure -760mmHg – 0.6 bar Ambient and fluid temperature 5°C to 60°C Lubrication not required Rubber cushion both sides
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Pneumatic Piston Rod Cylinder - 20mm Bore, 5mm Stroke, CU Series, Double Acting, SMC, CDU20-5D

CDU20-5D
The SMC free mount cylinder has multiple surface direct mounted rectangular body with no brackets allows freedom of the mounting surface. It has auto-switch capabilities, free mount choices, recessed switch mounting grooves and rubber bumpers standard. Non-rotating Rod Bore sizes from 6mm to 32mm available Stroke lengths up to 50mm
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Pneumatic Piston Rod Cylinder - 20mm Bore, 60mm Stroke, CU Series, Double Acting, SMC, CDU20-60D

CDU20-60D
The SMC free mount cylinder has multiple surface direct mounted rectangular body with no brackets allows freedom of the mounting surface. It has auto-switch capabilities, free mount choices, recessed switch mounting grooves and rubber bumpers standard. Non-rotating Rod Bore sizes from 6mm to 32mm available Stroke lengths up to 50mm
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