Airtac PSB Single Acting Compact Cylinder PSB12X50R
The AirTAC Airtac PSB Single Acting Compact Cylinder PSB12X50R is a single acting, push type (spring return) pen-size mini cylinder with a Ø12mm bore and 50mm stroke. A single air port drives the push stroke; the built-in return spring resets the rod when air is released, so only one solenoid line is needed.
- BoreØ12 mm
- Stroke50 mm
- Port sizeM5×0.8
- Acting typePush, single acting
- Rod threadM10×1.0
- ReturnSpring
About the Airtac PSB Single Acting Compact Cylinder PSB12X50R
The AirTAC PSB12X50R is a JIS pen-size single-acting push cylinder with a 50 mm stroke. Air entering the single M5x0.8 port extends the Ø5 mm rod, while an internal spring retracts it upon exhaust release. This fail-safe design ensures the rod returns home if air pressure drops, making it ideal for clamp-release and part-eject tasks. You get 42.9 N of net push at 0.5 MPa and 65.5 N at 0.7 MPa.
Built with a SUS304 stainless barrel and slim mini body, it fits tight, damp jigs while saving weight on light end-of-arm tooling. The R axial inlet keeps plumbing in-line. A fixed TPU bumper cushions the stroke ends. For smooth travel, plan for a safe working load of about 26 N, which lifts roughly 2.2 kg vertically with a 2:1 margin.
Airtac PSB Single Acting Compact Cylinder PSB12X50R Technical Specifications
| Model | Airtac PSB Single Acting Compact Cylinder PSB12X50R |
|---|---|
| Series | PSB JIS pen-size mini cylinder |
| Bore size | Ø12 mm |
| Rod diameter | Ø5 mm |
| Stroke | 50 mm |
| Acting type | Single acting, push type (spring return) |
| Port size | M5×0.8 |
| Fluid | Air (filtered by 40µm element) |
|---|---|
| Operating pressure | 0.2 – 0.7 MPa |
| Proof pressure | 1.2 MPa |
| Temperature | -20 to +70 °C |
| Speed range | 50 – 800 mm/s |
| Return | Return spring (push by air) |
| Max standard stroke | Up to 60 mm |
The spring holds the rod retracted; applying air pushes the rod out, and removing air lets the spring return it. Forces below are the NET spring-deducted values from the AirTAC thrust table. Confirm against the product label before installation.
Net Push Force (Ø12mm)
| Pressure | Net push force |
|---|---|
| 0.5 MPa | 42.9 N |
| 0.7 MPa (max) | 65.5 N |
These are the usable push forces after the return spring is subtracted, taken directly from the AirTAC single-acting thrust table. Minimum operating pressure is set by the spring, so this model needs at least the lower pressure shown to move.
Model Code: Airtac PSB Single Acting Compact Cylinder PSB12X50R
| PSB | JIS pen-size single acting, push type (spring return) mini-cylinder series. |
|---|---|
| 12 | Bore size in mm. |
| ×50 | Stroke length in mm. |
| S | Built-in magnet for magnetic-switch position sensing (omit = no magnet). |
| R / U / CB | Back cover: R axial inlet, U 90° side inlet, CB double clevis (bore-dependent). |
Mounting accessories: LB, FA, CJ. Related PB-family variants: PB (double acting), PTB (single-acting pull), PBD (double rod), PBR (front-mount).
Where the Airtac PSB Single Acting Compact Cylinder PSB12X50R Is Used
Stamping Ejector
Pushes small stamped parts out of a die on a press line. The spring-return design guarantees the ejector pin clears the tool when air is removed.
Package Diverter
Acts as a slim pusher arm on a packaging conveyor to deflect lightweight cartons. The compact pen-size body mounts flush within tight side guides.
Clamp Release
Holds a workpiece during machining and retracts instantly to free the part. The single solenoid line simplifies tubing compared to double-acting units.
Is the Airtac PSB Single Acting Compact Cylinder PSB12X50R the Right Cylinder?
This 12 mm bore provides 42.9 N net push at 0.5 MPa. If you need less force, the Ø10 bore offers 29.8 N; for heavier tasks, the Ø16 bore yields 74.8 N. The internal spring requires a minimum 0.2 MPa operating pressure before the rod moves, and it holds the rod retracted safely on air loss. Over this 50 mm stroke, the slender Ø5 mm rod handles coaxial thrust only—add an external guide for any off-axis loads.
Confirm your ordering essentials: 12 mm bore, 50 mm stroke, no magnet, R axial back cover, and your preferred mounting bracket. The rod-end thread is M10x1.0.
Quick checklist
- ✓ Net push force at your working pressure
- ✓ Only one air line / solenoid needed
- ✓ Fail-safe retract on air loss
- ✓ Magnet (S) for sensors?
- ✓ Stroke ≤ 60 mm (single-acting limit)
- ✓ Keep the load coaxial — avoid side load
Installation & Maintenance Notes
- check Use clean air filtered to 40µm or finer.
- check Keep within 0.2 – 0.7 MPa operating pressure.
- check Allow for spring force in the stroke direction.
- check Do not add an external return mechanism.
- check Keep the load coaxial; avoid side load on the thin rod.
- check Do not dismantle the front or back cover.
Airtac PSB Single Acting Compact Cylinder PSB12X50R FAQ
The net push force is 42.9 N at 0.5 MPa and 65.5 N at 0.7 MPa. The internal return spring sets a minimum operating pressure of 0.2 MPa before the rod can extend. If air loss occurs, the spring fails-safe to the retracted position.
It uses a fixed TPU bumper at each end to decelerate the stroke over the last few millimeters. This bumper is not adjustable. At higher speeds with real tooling mass, you should meter-out the exhaust or add an external shock absorber to prevent bottoming out.
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Covers non-human-caused product damage.
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Standard models usually ship in 3-4 days.
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