Airtac PSB Single Acting Compact Cylinder PSB12X60U
The AirTAC Airtac PSB Single Acting Compact Cylinder PSB12X60U is a single acting, push type (spring return) pen-size mini cylinder with a Ø12mm bore and 60mm 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
- Stroke60 mm
- Port sizeM5×0.8
- Acting typePush, single acting
- Rod threadM10×1.0
- ReturnSpring
About the Airtac PSB Single Acting Compact Cylinder PSB12X60U
The AirTAC PSB12X60U is a JIS pen-size single-acting push cylinder that extends a 5 mm rod using one air line, relying on an internal spring to retract automatically upon exhaust release. It supplies 42.9 N of net push at 0.5 MPa and 65.5 N at 0.7 MPa, with the spring force already subtracted from these usable figures. The U back cover provides a 90-degree side inlet for flat plumbing in confined spaces.
A single solenoid line simplifies tubing and wiring compared to double-acting units, while the fail-safe retract ensures the rod pulls home safely if air pressure drops. The slim SUS304 stainless body resists moisture in tight jigs. Because the internal spring creates resistance, a minimum operating pressure of 0.2 MPa is required before the piston moves. Plan for a safe working load of about 26 N, which represents roughly 60 percent of the 0.5 MPa rating, to account for seal friction and smooth travel.
Airtac PSB Single Acting Compact Cylinder PSB12X60U Technical Specifications
| Model | Airtac PSB Single Acting Compact Cylinder PSB12X60U |
|---|---|
| Series | PSB JIS pen-size mini cylinder |
| Bore size | Ø12 mm |
| Rod diameter | Ø5 mm |
| Stroke | 60 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 PSB12X60U
| PSB | JIS pen-size single acting, push type (spring return) mini-cylinder series. |
|---|---|
| 12 | Bore size in mm. |
| ×60 | 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 PSB12X60U Is Used
Part Ejection Arm
Pushes machined aluminum parts out of a CNC chuck using one air line, with the spring safely pulling the ejector pin back when air is cut.
Carton Flap Folder
Extends 60 mm to fold corrugated box flaps on a packaging line, relying on the fail-safe retract to clear the path during jams.
Sorting Gate Diverter
Acts as a spring-return diverter gate on a conveyor belt, pushing lightweight parcels onto a secondary track before retracting automatically.
Is the Airtac PSB Single Acting Compact Cylinder PSB12X60U the Right Cylinder?
This 12 mm bore, 60 mm stroke model sits at the maximum single-acting stroke limit. If your project needs less travel, the 10 mm bore variant offers 29.8 N net push at 0.5 MPa, while stepping up to the 16 mm bore yields 74.8 N at 0.5 MPa for heavier tooling. The fixed M5x0.8 port and M10x1.0 rod-end thread must match your fittings. Confirm your ordering essentials: bore, stroke, the U side inlet, and mounting brackets.
The internal return spring sets a 0.2 MPa minimum pressure before extension begins, and the rod stays retracted without live air. A fixed TPU bumper decelerates the piston at the end of travel, but at high speeds with real mass, you should meter-out the exhaust or add an external shock absorber. Over this long 60 mm stroke, the slender 5 mm rod requires an external guide or linear bearing to prevent side-load damage.
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 PSB12X60U FAQ
The net usable 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 operating pressure of 0.2 MPa is required before the rod extends.
A fixed TPU bumper decelerates the piston over the last few millimeters of travel, but it is not adjustable or a lock. The spring ensures the rod fails safe in the retracted position on air loss, requiring only one solenoid line to drive the push motion.
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