Airtac PSB Single Acting Compact Cylinder PSB12X40SCB
The AirTAC Airtac PSB Single Acting Compact Cylinder PSB12X40SCB is a single acting, push type (spring return) pen-size mini cylinder with a Ø12mm bore and 40mm 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
- Stroke40 mm
- Port sizeM5×0.8
- Acting typePush, single acting
- Rod threadM10×1.0
- ReturnSpring
About the Airtac PSB Single Acting Compact Cylinder PSB12X40SCB
The AirTAC PSB12X40SCB 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. With a 12 mm bore, it provides 42.9 N of net push at 0.5 MPa.
This 40 mm stroke model includes a built-in piston magnet for position sensing with reed or electronic switches. The CB double clevis back cover accommodates pivoting loads. A fixed TPU bumper decelerates the stroke at the ends, and the SUS304 stainless build resists moisture in tight jigs.
Airtac PSB Single Acting Compact Cylinder PSB12X40SCB Technical Specifications
| Model | Airtac PSB Single Acting Compact Cylinder PSB12X40SCB |
|---|---|
| Series | PSB JIS pen-size mini cylinder |
| Bore size | Ø12 mm |
| Rod diameter | Ø5 mm |
| Stroke | 40 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 PSB12X40SCB
| PSB | JIS pen-size single acting, push type (spring return) mini-cylinder series. |
|---|---|
| 12 | Bore size in mm. |
| ×40 | 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 PSB12X40SCB Is Used
Pivoting Part Ejector
Uses the CB double clevis to swing and push finished metal parts off a CNC machining center conveyor.
Carton Flap Folder
Extends to fold corrugated box flaps, with the spring ensuring a safe retract when air is cut off.
Clamp Release Mechanism
Pushes a lightweight lever to release clamped wooden components in an automated assembly jig.
Is the Airtac PSB Single Acting Compact Cylinder PSB12X40SCB the Right Cylinder?
This 12 mm bore yields 42.9 N net push at 0.5 MPa. Stepping down to the Ø10 bore drops output to 29.8 N, whereas the Ø16 bore raises it to 74.8 N. The return spring imposes a 0.2 MPa minimum pressure before motion begins. Plan for a safe working load of roughly 26 N, which is about 60 percent of the rated figure, to account for friction.
The Ø5 mm rod handles coaxial thrust well, but over this 40 mm stroke an external guide prevents side-load wear. Confirm your ordering essentials: 12 mm bore, 40 mm stroke, S magnet, CB double clevis, and any LB/FA/CJ mounting bracket.
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 PSB12X40SCB 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 moves. The spring also ensures the rod fails safe in the retracted position.
The fixed TPU bumper decelerates the piston over the last few millimeters of travel but is not adjustable; at high speeds with heavy tooling, meter-out the exhaust or add an external shock absorber. The built-in S magnet works with AirTAC reed or electronic switches for position confirmation.
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 PSB12X40SCB
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.