Airtac PSB Single Acting Compact Cylinder PSB12X25R
The AirTAC Airtac PSB Single Acting Compact Cylinder PSB12X25R 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 PSB12X25R
The AirTAC PSB12X25R is a JIS pen-size single-acting push cylinder with a 12mm bore and 25mm stroke. Air entering the M5x0.8 port extends the Ø5mm rod, while an internal spring ensures fail-safe retraction upon air loss. You get 42.9 N of net push at 0.5 MPa, or 65.5 N at the 0.7 MPa maximum.
This slim SUS304 stainless body simplifies valving because only one solenoid line is required. A fixed TPU bumper cushions the stroke ends. For smooth operation, plan for a safe working load of about 26 N, which accounts for seal friction and travel consistency.
Airtac PSB Single Acting Compact Cylinder PSB12X25R Technical Specifications
| Model | Airtac PSB Single Acting Compact Cylinder PSB12X25R |
|---|---|
| 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 PSB12X25R
| 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 PSB12X25R Is Used
Part Ejection
Pushes machined aluminum parts out of a CNC fixture. The spring-return design guarantees the ejector clears the work area if compressed air drops unexpectedly.
Diverter Gate
Actuates a lightweight routing flap on a packaging conveyor. One air line drives the push stroke, cutting tubing complexity and valve costs in tight control panels.
Carton Clamp
Holds a small cardboard carton stationary during a labeling cycle. Upon release, the cylinder vents and the internal spring immediately retracts the clamp.
Is the Airtac PSB Single Acting Compact Cylinder PSB12X25R the Right Cylinder?
This 12mm bore provides 42.9 N net push at 0.5 MPa. If you need less force, the 10mm version offers 29.8 N; stepping up to the 16mm bore yields 74.8 N. The internal return spring sets a 0.2 MPa minimum pressure before motion begins, holding the rod safely retracted without live air.
Confirm your ordering essentials: 12mm bore, 25mm stroke, no magnet, R axial inlet, and required mounting bracket. The slender Ø5mm rod handles coaxial thrust well, but add an external guide for any off-axis loads.
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 PSB12X25R FAQ
It delivers 42.9 N net push at 0.5 MPa and 65.5 N at 0.7 MPa. Because an internal spring returns the rod, a minimum of 0.2 MPa is required to overcome the spring before the cylinder extends.
It uses a fixed TPU bumper at each end to decelerate the stroke over the last few millimeters. The bumper is not adjustable, so at higher speeds with heavy tooling mass you should meter-out the exhaust or add an external shock absorber.
Authorized Export Seller
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.
Fast Reply
Most inquiries answered within 7-8 hours.
Related AirTAC PSB Pen-Size Cylinders
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