Airtac PSB Single Acting Compact Cylinder PSB12X40SU
The AirTAC Airtac PSB Single Acting Compact Cylinder PSB12X40SU 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 PSB12X40SU
The AirTAC PSB12X40SU is a JIS pen-size single-acting push cylinder, meaning air entering its single M5x0.8 port extends the rod while an internal spring handles the return. This design cuts your tubing and solenoid costs in half compared to double-acting units. It supplies 42.9 N of net push at 0.5 MPa, with the spring force already deducted.
Built with a SUS304 stainless steel barrel and a slim 12 mm body, it fits easily into tight jigs and light end-of-arm tooling. The U suffix adds a 90-degree side inlet for flat plumbing. If power drops, the spring pulls the rod safely back to its retracted home position.
Airtac PSB Single Acting Compact Cylinder PSB12X40SU Technical Specifications
| Model | Airtac PSB Single Acting Compact Cylinder PSB12X40SU |
|---|---|
| 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 PSB12X40SU
| 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 PSB12X40SU Is Used
Stamping Ejector
Pushes finished metal blanks out of a press die. The spring-return fail-safe guarantees the ejector pin clears the mold when air is shut off.
Package Diverter
Acts as a slim routing gate on a packaging conveyor. The 90-degree side inlet keeps the plumbing flat against the machine frame.
Vertical Lift Stop
Raises a lightweight product stop. With a 2:1 safety margin, it lifts about 2.2 kg vertically against gravity.
Is the Airtac PSB Single Acting Compact Cylinder PSB12X40SU the Right Cylinder?
This 12 mm bore provides 42.9 N net push at 0.5 MPa and 65.5 N at the 0.7 MPa maximum. Sizing both ways: a 10 mm bore gives 29.8 N, while a 16 mm bore yields 74.8 N at 0.5 MPa. The internal return spring requires at least 0.2 MPa before motion begins. Plan for a safe working load of roughly 26 N (about 60 percent of the 0.5 MPa rating) to account for friction.
The 40 mm stroke sits well within the 60 mm single-acting limit. The S suffix equips the piston with a magnet for reed or electronic switches. Confirm your ordering essentials: 12 mm bore, 40 mm stroke, magnet, U side inlet, and your preferred 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 PSB12X40SU FAQ
The net push force is 42.9 N at 0.5 MPa and 65.5 N at the 0.7 MPa maximum. Because the internal spring opposes the air stroke, a minimum of 0.2 MPa is required before the rod extends.
It uses a fixed TPU bumper to decelerate the rod over the last few millimeters. At high speeds with heavy tooling, meter-out the exhaust or add an external shock absorber. The S suffix provides a piston magnet for reed or electronic switches.
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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.
Fast Reply
Most inquiries answered within 7-8 hours.
Related AirTAC PSB Pen-Size Cylinders
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