Airtac PSB Single Acting Compact Cylinder PSB12X25SR
The AirTAC Airtac PSB Single Acting Compact Cylinder PSB12X25SR is a single acting, push type (spring return) pen-size mini cylinder with a Ø12mm bore and 25mm 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
- Stroke25 mm
- Port sizeM5×0.8
- Acting typePush, single acting
- Rod threadM10×1.0
- ReturnSpring
About the Airtac PSB Single Acting Compact Cylinder PSB12X25SR
The AirTAC PSB12X25SR is a JIS pen-size single-acting push cylinder featuring a 12 mm bore and 25 mm stroke. Air entering the single M5x0.8 port extends the Ø5 mm rod, while an internal spring ensures fail-safe retraction upon exhaust. You gain 42.9 N of net push at 0.5 MPa and 65.5 N at 0.7 MPa, with the spring force already deducted. The built-in -S magnet enables position sensing with reed or electronic switches.
Its SUS304 stainless barrel and slim body suit tight jigs and light end-of-arm tooling. A fixed TPU bumper cushions the stroke ends. For practical sizing, plan for a safe working load of roughly 26 N (about 60 percent of the 0.5 MPa rating) to account for seal friction. This equates to lifting about 2.2 kg vertically with a sane 2:1 margin.
Airtac PSB Single Acting Compact Cylinder PSB12X25SR Technical Specifications
| Model | Airtac PSB Single Acting Compact Cylinder PSB12X25SR |
|---|---|
| Series | PSB JIS pen-size mini cylinder |
| Bore size | Ø12 mm |
| Rod diameter | Ø5 mm |
| Stroke | 25 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 PSB12X25SR
| PSB | JIS pen-size single acting, push type (spring return) mini-cylinder series. |
|---|---|
| 12 | Bore size in mm. |
| ×25 | 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 PSB12X25SR Is Used
Part Ejection
Pushes machined aluminum brackets out of a CNC fixture. The spring-return design guarantees the ejector clears the workspace if compressed air drops unexpectedly.
Flap Deflection
Extends to guide cardboard carton flaps on a packing line. The single air line simplifies tubing, while the fail-safe retract prevents jamming during line stops.
Sorting Gate
Acts as a diverter arm to route small plastic bottles. The built-in magnet confirms gate position, and the compact body fits neatly between conveyor belts.
Is the Airtac PSB Single Acting Compact Cylinder PSB12X25SR the Right Cylinder?
This 12 mm bore yields 42.9 N net push at 0.5 MPa. If you need less force, stepping down to the 10 mm bore provides 29.8 N; moving up to the 16 mm bore offers 74.8 N. The internal return spring requires a minimum operating pressure of 0.2 MPa before the rod begins moving. Because the rod is only Ø5 mm, use an external guide or linear bearing for off-axis loads over this 25 mm stroke.
Confirm your ordering essentials: 12 mm bore, 25 mm stroke, -S magnet, R axial inlet, and your preferred mounting bracket. The fixed TPU bumper handles light end-of-stroke deceleration, but meter-out the exhaust if moving heavy tooling mass.
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 PSB12X25SR 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 dictates a minimum operating pressure of 0.2 MPa to extend the rod. Upon air loss, the spring fails-safe to the retracted position.
It uses a fixed TPU bumper at the stroke ends to absorb impact, which is not adjustable. The -S suffix denotes a built-in piston magnet for use with AirTAC reed or electronic switches. For high-speed tooling mass, add an external shock absorber.
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Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models usually ship in 3-4 days.
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Most inquiries answered within 7-8 hours.
Related AirTAC PSB Pen-Size Cylinders
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