Airtac PSB Single Acting Compact Cylinder PSB12X30CB
The AirTAC Airtac PSB Single Acting Compact Cylinder PSB12X30CB is a single acting, push type (spring return) pen-size mini cylinder with a Ø12mm bore and 30mm 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
- Stroke30 mm
- Port sizeM5×0.8
- Acting typePush, single acting
- Rod threadM10×1.0
- ReturnSpring
About the Airtac PSB Single Acting Compact Cylinder PSB12X30CB
The AirTAC PSB12X30CB is a JIS pen-size single-acting push cylinder with a 12mm bore and 30mm stroke. Air entering the M5x0.8 port extends the Ø5mm rod, while an internal spring retracts it upon exhaust release. This fail-safe design keeps the rod retracted if air pressure drops. It provides 42.9 N of net push at 0.5 MPa and 65.5 N at 0.7 MPa.
Featuring a CB double clevis back cover, this unit accommodates pivoting loads on compact jigs. The SUS304 stainless barrel and slim body fit tight spaces. A fixed TPU bumper cushions the stroke ends. For smooth operation, plan for a safe working load of about 26 N, which is roughly 60 percent of the 0.5 MPa rating.
Airtac PSB Single Acting Compact Cylinder PSB12X30CB Technical Specifications
| Model | Airtac PSB Single Acting Compact Cylinder PSB12X30CB |
|---|---|
| Series | PSB JIS pen-size mini cylinder |
| Bore size | Ø12 mm |
| Rod diameter | Ø5 mm |
| Stroke | 30 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 PSB12X30CB
| PSB | JIS pen-size single acting, push type (spring return) mini-cylinder series. |
|---|---|
| 12 | Bore size in mm. |
| ×30 | 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 PSB12X30CB Is Used
Pivoting Part Ejector
Uses the CB double clevis to swing rejected components off a CNC conveyor belt, relying on the spring to safely retract the plunger during air loss.
Carton Flap Folder
Pushes corrugated flaps into position on a packing line, where the fail-safe return prevents jams when the pneumatic supply stops.
Clamp Release Mechanism
Applies 42.9 N of net thrust at 0.5 MPa to hold a workpiece, automatically releasing the clamp via spring pressure for rapid unloading.
Is the Airtac PSB Single Acting Compact Cylinder PSB12X30CB the Right Cylinder?
Select this 12mm bore model when your pivot mechanism requires a 30mm stroke and moderate thrust. If you need less force, the Ø10 version offers 29.8 N net push at 0.5 MPa. For heavier drives, the Ø16 provides 74.8 N at 0.5 MPa. Remember the internal spring sets a 0.2 MPa minimum pressure before motion begins. Confirm your ordering code includes the CB double clevis, as well as any required mounting brackets.
The M10x1.0 rod-end thread handles tooling attachment, while the M5x0.8 air port manages supply. Because the Ø5mm rod is slender, apply an external linear bearing if the stroke encounters off-axis loads. Without live air, the spring securely holds the assembly in the retracted home position.
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 PSB12X30CB FAQ
This single-acting push cylinder delivers 42.9 N of net usable force at 0.5 MPa and 65.5 N at the 0.7 MPa maximum. The internal return spring requires a minimum operating pressure of 0.2 MPa to move the rod, and the assembly fails safe to the retracted position on air loss.
The CB back cover provides a double clevis for pivoting applications. Deceleration relies on a fixed TPU bumper at each end. Since this bumper only absorbs the final few millimeters, you should meter-out the exhaust or add an external shock absorber when cycling real tooling mass at higher speeds.
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