Airtac PSB Single Acting Compact Cylinder PSB12X45R
The AirTAC Airtac PSB Single Acting Compact Cylinder PSB12X45R 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
About the Airtac PSB Single Acting Compact Cylinder PSB12X45R
The AirTAC PSB12X45R is a JIS pen-size single-acting push cylinder that extends its Ø5 mm rod via one M5x0.8 air line. An internal spring brings the tooling back upon exhaust, ensuring a fail-safe retracted state if air pressure drops. This single-line setup cuts tubing complexity and solenoid costs compared to double-acting units.
Delivering 42.9 N of net push at 0.5 MPa (65.5 N at 0.7 MPa maximum), the SUS304 stainless barrel suits damp or space-constrained environments. The R axial inlet keeps plumbing in-line. A practical safe working load is about 26 N, meaning you can reliably lift roughly 2.2 kg vertically with a sane 2:1 margin.
Airtac PSB Single Acting Compact Cylinder PSB12X45R Technical Specifications
| Model | Airtac PSB Single Acting Compact Cylinder PSB12X45R |
|---|---|
| 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 PSB12X45R
| 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 PSB12X45R Is Used
Part Ejection Arm
Pushes machined aluminum brackets out of a CNC fixture; the spring safely pulls the ejector pin back when air cuts off.
Sorting Diverter
Extends to deflect small plastic bottles down a reject lane on a packaging line, returning home automatically between cycles.
Clamp Release Mechanism
Applies 26 N of holding force to secure a lightweight wooden jig during drilling, releasing instantly on air loss.
Is the Airtac PSB Single Acting Compact Cylinder PSB12X45R the Right Cylinder?
This 12 mm bore provides 42.9 N net thrust at 0.5 MPa. If your task is lighter, the Ø10 version offers 29.8 N; for heavier pushes, the Ø16 yields 74.8 N. The internal return spring demands at least 0.2 MPa before motion begins, so size your regulator accordingly. Confirm your ordering essentials: 45 mm stroke, no magnet, R back cover, and required mount.
Because the rod is a slender Ø5 mm, use an external guide or linear bearing for this 45 mm stroke to prevent off-axis side loading. The fixed TPU bumper decelerates the final few millimeters of travel; at high cycling speeds with real tooling mass, meter-out the exhaust or add an external shock absorber.
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 PSB12X45R FAQ
It provides 42.9 N of net push at 0.5 MPa and 65.5 N at 0.7 MPa maximum. The internal spring requires at least 0.2 MPa before the rod extends, and the cylinder fails safe to the retracted position on air loss.
It uses a fixed TPU bumper at each end to decelerate travel over the last few millimeters. This bumper is not adjustable or a locking brake; for high-speed cycles with heavy tooling, add an external shock absorber or meter-out the exhaust.
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1-Year Warranty
Covers non-human-caused product damage.
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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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