Airtac PSB Single Acting Compact Cylinder PSB12X20SCB
The AirTAC Airtac PSB Single Acting Compact Cylinder PSB12X20SCB is a single acting, push type (spring return) pen-size mini cylinder with a Ø12mm bore and 20mm 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
- Stroke20 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 PSB12X20SCB
The AirTAC PSB12X20SCB is a JIS pen-size single-acting push cylinder with a 12mm bore and 20mm stroke. Air entering the single M5x0.8 port extends the Ø5mm rod, while an internal spring ensures fail-safe retraction upon air loss. This design requires only one solenoid line, cutting tubing and wiring complexity. It provides 42.9 N of net push at 0.5 MPa and 65.5 N at 0.7 MPa.
Built with a SUS304 stainless barrel and rod, the slim mini body fits tight jigs. The CB double clevis back cover accommodates pivoting loads. A fixed TPU bumper decelerates the stroke near the ends. The built-in magnet (-S) supports AirTAC reed or electronic switches for position sensing.
Airtac PSB Single Acting Compact Cylinder PSB12X20SCB Technical Specifications
| Model | Airtac PSB Single Acting Compact Cylinder PSB12X20SCB |
|---|---|
| Series | PSB JIS pen-size mini cylinder |
| Bore size | Ø12 mm |
| Rod diameter | Ø5 mm |
| Stroke | 20 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 PSB12X20SCB
| PSB | JIS pen-size single acting, push type (spring return) mini-cylinder series. |
|---|---|
| 12 | Bore size in mm. |
| ×20 | 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 PSB12X20SCB Is Used
Pivoting Part Ejector
Uses the CB double clevis to swing and push finished metal parts off a machining center conveyor, relying on the spring to safely retract the pin during air loss.
Carton Flap Folder
Deploys the rod to fold corrugated cardboard flaps on a packaging line, with the single air line simplifying valve manifold wiring in tight spaces.
Diverter Gate Actuator
Pushes a lightweight routing gate to redirect product flow on a sorting table, using the fail-safe spring return to clear the path when air is exhausted.
Is the Airtac PSB Single Acting Compact Cylinder PSB12X20SCB the Right Cylinder?
This 12mm bore yields 42.9 N net push at 0.5 MPa. Sizing both ways: the 10mm bore offers 29.8 N, while 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. For real-world planning, target a safe working load of about 26 N (roughly 60% of the 0.5 MPa rating) to account for seal friction.
The CB double clevis is ideal for pivoting mechanisms. Keep in mind the Ø5mm rod is for coaxial thrust; over the 20mm stroke, avoid side loads by adding an external linear bearing. Confirm your ordering essentials: 12mm bore, 20mm stroke, S magnet, CB clevis, and any mounting brackets.
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 PSB12X20SCB FAQ
The net push force is 42.9 N at 0.5 MPa and 65.5 N at the 0.7 MPa maximum. Because the internal return spring opposes the air stroke, a minimum operating pressure of 0.2 MPa is required before the rod moves, and the rod fails safe to the retracted position on air loss.
This cylinder uses a fixed TPU bumper at each end to decelerate the last few millimeters of travel; it is not adjustable, so at higher speeds with real tooling mass you should meter-out the exhaust or add an external shock absorber. The -S option includes a built-in piston magnet compatible with AirTAC reed or electronic switches.
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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