Airtac PSB Single Acting Compact Cylinder PSB12X25SCB
The AirTAC Airtac PSB Single Acting Compact Cylinder PSB12X25SCB 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 PSB12X25SCB
The AirTAC PSB12X25SCB is a JIS pen-size single-acting push cylinder. Air entering the 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. It provides 42.9 N of net push at 0.5 MPa and 65.5 N at 0.7 MPa.
The built-in -S magnet supports reed or electronic switches for position sensing. A CB double clevis back cover accommodates pivoting loads. The SUS304 stainless barrel and slim body fit tight jigs. For practical sizing, plan for a safe working load of about 26 N, which accounts for seal friction at 60 percent of the 0.5 MPa rating.
Airtac PSB Single Acting Compact Cylinder PSB12X25SCB Technical Specifications
| Model | Airtac PSB Single Acting Compact Cylinder PSB12X25SCB |
|---|---|
| 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 PSB12X25SCB
| 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 PSB12X25SCB Is Used
Pivoting Part Ejector
Uses the CB double clevis to swing and push finished metal parts off a CNC milling table during automated unloading.
Fail-Safe Carton Flap
Holds packaging flaps open on a filling line; the spring automatically retracts the rod to clear the path when air cuts out.
Diverter Gate Actuator
Pushes a lightweight routing gate to sort small products on a conveyor, relying on the single air line for simple valving.
Is the Airtac PSB Single Acting Compact Cylinder PSB12X25SCB the Right Cylinder?
This 12 mm bore generates 42.9 N net push at 0.5 MPa. Stepping down to a 10 mm bore yields 29.8 N, while moving up to a 16 mm bore provides 74.8 N. The internal return spring requires a minimum 0.2 MPa operating pressure before motion begins. With a 2:1 safety margin, it lifts about 2.2 kg vertically.
The Ø5 mm piston rod handles coaxial thrust well, but add an external guide for off-axis loads over this 25 mm stroke. A fixed TPU bumper decelerates the end of travel; meter-out the exhaust if moving heavy tooling. Confirm your ordering code includes the S magnet, CB double clevis, and required stroke.
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 PSB12X25SCB FAQ
The net push force is 42.9 N at 0.5 MPa and 65.5 N at 0.7 MPa. Because the internal spring opposes the air stroke, a minimum operating pressure of 0.2 MPa is required before the rod extends. The spring ensures the rod fails safe in the retracted position upon air loss.
This cylinder uses a fixed TPU bumper to decelerate the stroke over the last few millimeters. It is not an adjustable shock absorber, so meter-out the exhaust if cycling heavy tooling at high speeds. The built-in S magnet works with AirTAC reed or electronic switches for precise end-of-stroke detection.
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
Request a Quote for Airtac PSB Single Acting Compact Cylinder PSB12X25SCB
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.