Airtac PSB Single Acting Compact Cylinder PSB12X45SCB
The AirTAC Airtac PSB Single Acting Compact Cylinder PSB12X45SCB 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 PSB12X45SCB
The AirTAC PSB12X45SCB is a JIS pen-size single-acting push cylinder. Air entering the M5x0.8 port extends the Ø5 mm rod, while an internal spring retracts it upon exhaust. This fail-safe design ensures the rod returns home if air pressure drops, making it ideal for clamp-release or part-eject duties. It delivers 42.9 N of net push at 0.5 MPa.
Built with a SUS304 stainless barrel and a CB double clevis for pivoting loads, this slim mini body fits tight jigs. A fixed TPU bumper decelerates the stroke. The built-in magnet (-S) supports reed or electronic switches. For a 45 mm stroke, plan for a safe working load of about 26 N (roughly 60% of the 0.5 MPa rating) to account for seal friction.
Airtac PSB Single Acting Compact Cylinder PSB12X45SCB Technical Specifications
| Model | Airtac PSB Single Acting Compact Cylinder PSB12X45SCB |
|---|---|
| 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 PSB12X45SCB
| 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 PSB12X45SCB Is Used
Pivoting Part Ejector
Uses the CB double clevis to swing and push finished parts off an angled machining fixture, relying on the spring to safely retract the plunger.
Vertical Lift Gate
Raises a light sorting flap on a packaging line; the fail-safe spring drop closes the gate when air is removed, halting product flow.
Spring-Return Clamp
Applies 26 N of safe clamping force on a delicate PCB during testing, releasing instantly to zero pressure on exhaust.
Is the Airtac PSB Single Acting Compact Cylinder PSB12X45SCB the Right Cylinder?
This 12 mm bore provides 42.9 N net push at 0.5 MPa and 65.5 N at 0.7 MPa. If you need less force, the Ø10 bore offers 29.8 N at 0.5 MPa; for heavier tasks, the Ø16 bore yields 74.8 N. The internal spring sets a 0.2 MPa minimum pressure before motion begins. With a 45 mm stroke, the slender Ø5 mm rod needs an external guide to prevent side-load binding.
Confirm your ordering essentials: 12 mm bore, 45 mm stroke, -S magnet, CB double clevis, and any mounting brackets. The M10x1.0 rod-end thread secures your tooling. If you require force in both directions without spring loss, consider the PB double-acting series instead.
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 PSB12X45SCB FAQ
The net usable push force is 42.9 N at 0.5 MPa and 65.5 N at 0.7 MPa (maximum). Because the internal return spring opposes the air stroke, a minimum of 0.2 MPa is required before the rod moves. The spring ensures the rod fails safe to the retracted position on air loss.
This cylinder uses a fixed TPU bumper to decelerate the last few millimeters of travel; it is not adjustable. At higher speeds with real tooling mass, meter-out the exhaust or add an external shock absorber. The -S suffix indicates a built-in piston magnet compatible with AirTAC reed or electronic switches.
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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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