Airtac PSB Single Acting Compact Cylinder PSB12X45U
The AirTAC Airtac PSB Single Acting Compact Cylinder PSB12X45U is a single acting, push type (spring return) pen-size mini cylinder with a Ø12mm bore and 45mm 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
- Stroke45 mm
- Port sizeM5×0.8
- Acting typePush, single acting
- Rod threadM10×1.0
- ReturnSpring
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac PSB Single Acting Compact Cylinder PSB12X45U
The AirTAC PSB12X45U 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 at 0.5 MPa, simplifying valving since only one solenoid line is required. The U option designates a 90-degree side inlet for flat plumbing in confined spaces.
Built with a SUS304 stainless steel rod and barrel, this slim mini body handles damp or tight jig environments. The fail-safe design ensures the rod pulls home automatically upon air loss. A fixed TPU bumper cushions the stroke ends, and the M10x1.0 rod-end thread handles tooling attachment.
Airtac PSB Single Acting Compact Cylinder PSB12X45U Technical Specifications
| Model | Airtac PSB Single Acting Compact Cylinder PSB12X45U |
|---|---|
| Series | PSB JIS pen-size mini cylinder |
| Bore size | Ø12 mm |
| Rod diameter | Ø5 mm |
| Stroke | 45 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 PSB12X45U
| PSB | JIS pen-size single acting, push type (spring return) mini-cylinder series. |
|---|---|
| 12 | Bore size in mm. |
| ×45 | 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 PSB12X45U Is Used
Part Ejection Arm
Uses the spring-return push to eject machined components from a CNC fixture, guaranteeing the arm retracts safely when air drops.
Sorting Diverter
Employs the 90-degree side inlet to fit within a narrow conveyor frame, pushing lightweight packages onto a secondary track.
Flap Hold-down
Clamps carton flaps during a taping sequence, relying on the single air line to maintain 42.9 N of holding thrust at 0.5 MPa.
Is the Airtac PSB Single Acting Compact Cylinder PSB12X45U the Right Cylinder?
This 12mm bore generates 42.9 N net push at 0.5 MPa. Sizing down, the 10mm bore yields 29.8 N; sizing up, the 16mm bore provides 74.8 N at the same pressure. The internal spring sets a 0.2 MPa minimum operating pressure before motion begins. Plan for a safe working load of about 26 N (roughly 60 percent of the 0.5 MPa rating) to account for seal friction.
With a 45mm stroke, the slender Ø5 mm piston rod requires an external guide or linear bearing if subjected to off-axis loads. Confirm your ordering essentials: 12mm bore, 45mm stroke, U side inlet, and no magnet. The TPU bumper only decelerates the last few millimeters, so meter-out the exhaust if moving heavy tooling.
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 PSB12X45U FAQ
The net push force is 42.9 N at 0.5 MPa and 65.5 N at the 0.7 MPa maximum. Because an internal spring returns the rod, a minimum operating pressure of 0.2 MPa is required before the piston moves. The rod stays retracted if air pressure is lost.
The U suffix indicates a 90-degree side air inlet for flat plumbing. Cushioning is handled by a fixed TPU bumper at each end that decelerates the last few millimeters of travel; it is not adjustable. At high speeds with real tooling mass, meter-out the exhaust or add an external shock absorber.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models are processed and dispatched in 3-5 business days.
Fast Reply
Most inquiries answered within 7-8 hours.
Related AirTAC PSB Pen-Size Cylinders
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