Airtac PSB Single Acting Compact Cylinder PSB12X5U
The AirTAC Airtac PSB Single Acting Compact Cylinder PSB12X5U is a single acting, push type (spring return) pen-size mini cylinder with a Ø12mm bore and 5mm 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
- Stroke5 mm
- Port sizeM5×0.8
- Acting typePush, single acting
- Rod threadM10×1.0
- ReturnSpring
About the Airtac PSB Single Acting Compact Cylinder PSB12X5U
The AirTAC PSB12X5U is a JIS pen-size single-acting push cylinder that extends via one M5x0.8 air port and retracts via an internal spring. It provides 42.9 N of net push force at 0.5 MPa and 65.5 N at 0.7 MPa. Because it uses only one solenoid line, wiring and tubing are simpler than double-acting alternatives. The U back cover features a 90-degree side inlet for flat plumbing in tight spaces.
If air pressure drops, the built-in spring ensures the rod fails safe in the retracted position. The SUS304 stainless barrel and slim body suit damp or cramped jigs. A fixed TPU bumper cushions the stroke ends. 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 PSB12X5U Technical Specifications
| Model | Airtac PSB Single Acting Compact Cylinder PSB12X5U |
|---|---|
| Series | PSB JIS pen-size mini cylinder |
| Bore size | Ø12 mm |
| Rod diameter | Ø5 mm |
| Stroke | 5 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 PSB12X5U
| PSB | JIS pen-size single acting, push type (spring return) mini-cylinder series. |
|---|---|
| 12 | Bore size in mm. |
| ×5 | 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 PSB12X5U Is Used
Short-Stroke Part Ejector
Pushes small machined clips out of a lathe collet using 42.9 N of force, retracting safely when air is cut.
Diverter Gate Actuator
Extends a lightweight routing flap on a packaging line, with the 90-degree side inlet keeping the profile flat.
Clamp Release Mechanism
Overrides a mechanical hold-down on a test fixture, relying on the spring to withdraw the pin on exhaust.
Is the Airtac PSB Single Acting Compact Cylinder PSB12X5U 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 before the rod begins moving. The 5 mm stroke keeps the Ø5 mm rod highly rigid, but always avoid side loads by guiding external tooling.
When ordering, confirm the 12 mm bore, 5 mm stroke, U side inlet, and your mounting bracket. This configuration omits the magnetic sensor option. The M10x1.0 rod-end thread secures tooling directly.
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 PSB12X5U FAQ
It delivers 42.9 N net push at 0.5 MPa and 65.5 N at 0.7 MPa maximum. The return spring dictates a 0.2 MPa minimum pressure before the rod extends, and the rod fails safe retracted on air loss.
It uses a fixed TPU bumper at the stroke ends rather than an adjustable shock. Because the bumper only decelerates the last few millimeters, you should meter-out the exhaust or add an external shock absorber when moving heavy tooling at high speeds.
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Standard models usually ship in 3-4 days.
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Related AirTAC PSB Pen-Size Cylinders
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