Airtac PSB Single Acting Compact Cylinder PSB12X15CB
The AirTAC Airtac PSB Single Acting Compact Cylinder PSB12X15CB is a single acting, push type (spring return) pen-size mini cylinder with a Ø12mm bore and 15mm 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
- Stroke15 mm
- Port sizeM5×0.8
- Acting typePush, single acting
- Rod threadM10×1.0
- ReturnSpring
About the Airtac PSB Single Acting Compact Cylinder PSB12X15CB
The AirTAC PSB12X15CB is a JIS pen-size single-acting push cylinder with a 12mm bore and 15mm stroke. Air entering the M5x0.8 port extends the Ø5mm rod, while an internal spring retracts it upon exhaust. This fail-safe design ensures the rod returns home if air pressure drops, making it ideal for clamp-release and part-eject duties. 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 model accommodates pivoting loads. The SUS304 stainless barrel and slim body fit easily into tight jigs. A fixed TPU bumper decelerates the stroke at each end. For smooth operation, plan for a safe working load of about 26 N (roughly 60% of the 0.5 MPa rating) to account for seal friction.
Airtac PSB Single Acting Compact Cylinder PSB12X15CB Technical Specifications
| Model | Airtac PSB Single Acting Compact Cylinder PSB12X15CB |
|---|---|
| Series | PSB JIS pen-size mini cylinder |
| Bore size | Ø12 mm |
| Rod diameter | Ø5 mm |
| Stroke | 15 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 PSB12X15CB
| PSB | JIS pen-size single acting, push type (spring return) mini-cylinder series. |
|---|---|
| 12 | Bore size in mm. |
| ×15 | 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 PSB12X15CB Is Used
Pivoting Part Ejector
Uses the CB double clevis to swing and push finished metal parts off a machining center conveyor, relying on the spring to safely retract the pin during air loss.
Carton Flap Folder
Deploys the rod to fold corrugated cardboard flaps on a packaging line, with the TPU bumper absorbing the impact at the end of the 15mm travel.
Diverter Gate Actuator
Pushes a lightweight routing gate to redirect small electronic components on an assembly conveyor, benefiting from the single air line to simplify tubing.
Is the Airtac PSB Single Acting Compact Cylinder PSB12X15CB the Right Cylinder?
This 12mm bore provides 42.9 N net push at 0.5 MPa. Stepping down to the Ø10 bore yields 29.8 N, while the larger Ø16 offers 74.8 N. The internal return spring requires a minimum 0.2 MPa operating pressure before motion begins. The Ø5mm rod handles coaxial thrust well, but over the 15mm stroke or under off-axis loads, add an external linear bearing to prevent side-loading damage.
The CB double clevis inlet is designed for pivoting applications. When ordering, confirm the 12mm bore, 15mm stroke, double clevis cover, and mounting bracket. This unit lacks a sensor magnet; choose the -S suffix if position detection is required.
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 PSB12X15CB FAQ
The net push force is 42.9 N at 0.5 MPa and 65.5 N at 0.7 MPa (maximum pressure). Because an internal spring opposes the air stroke, a minimum of 0.2 MPa is required before the rod extends. The spring ensures the rod fails safe retracted upon air loss.
It uses a fixed TPU bumper at each end to decelerate the last few millimeters of travel; it is not adjustable, so meter-out the exhaust or add an external shock absorber if moving heavy tooling at high speed. The CB back cover provides a double clevis joint for pivoting load requirements.
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