Airtac PSB Single Acting Compact Cylinder PSB12X40SR
The AirTAC Airtac PSB Single Acting Compact Cylinder PSB12X40SR 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 PSB12X40SR
The AirTAC PSB12X40SR is a JIS pen-size single-acting push cylinder with a 12mm bore and 40mm stroke. Air entering the M5x0.8 port extends the Ø5mm rod, while an internal spring retracts it upon exhaust, ensuring a fail-safe home position if air pressure drops. Because the spring counteracts the air stroke, this model provides 42.9 N of net push at 0.5 MPa and 65.5 N at 0.7 MPa.
Equipped with a built-in piston magnet (-S) for position sensing with reed or electronic switches, it features an R axial inlet for streamlined plumbing. The SUS304 stainless barrel and slim body fit tight spaces, while a fixed TPU bumper decelerates the stroke near the ends. 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 PSB12X40SR Technical Specifications
| Model | Airtac PSB Single Acting Compact Cylinder PSB12X40SR |
|---|---|
| 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 PSB12X40SR
| 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 PSB12X40SR Is Used
Part Ejection Arm
Pushes machined aluminum rings out of a lathe chuck; the spring safely pulls the ejector pin back when air cuts off.
Sorting Diverter
Extends a lightweight deflector plate to route small plastic bottles down a secondary packaging line.
Clamp Release
Applies 26 N of safe holding force to secure a thin fiberboard panel during a light gluing operation.
Is the Airtac PSB Single Acting Compact Cylinder PSB12X40SR the Right Cylinder?
When sizing this 12mm bore unit, consider the 10mm variant offering 29.8 N net push at 0.5 MPa for lighter duties, or the 16mm version providing 74.8 N if your jig needs more force. The internal return spring requires a minimum operating pressure of 0.2 MPa before motion begins, and the rod safely stays retracted during air loss. Confirm your ordering essentials: 12mm bore, 40mm stroke, S magnet, R axial back cover, and any mounting brackets.
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 PSB12X40SR FAQ
It delivers 42.9 N net push at 0.5 MPa and 65.5 N at 0.7 MPa maximum. The internal spring requires at least 0.2 MPa to overcome spring resistance and extend the rod, retracting it safely on air loss.
It uses a fixed TPU bumper to decelerate the stroke over the last few millimeters; for heavy tooling at high speeds, add an external shock absorber. The built-in magnet (-S) supports both reed and electronic AirTAC switches.
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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