Airtac PSB Single Acting Compact Cylinder PSB12X40CB
The AirTAC Airtac PSB Single Acting Compact Cylinder PSB12X40CB is a single acting, push type (spring return) pen-size mini cylinder with a Ø12mm bore and 40mm 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
- Stroke40 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 PSB12X40CB
The AirTAC PSB12X40CB is a JIS pen-size single-acting push cylinder that extends via one M5x0.8 air line and uses a built-in spring to retract. This fail-safe design ensures the rod pulls home on air loss, making it ideal for clamp-release or part-eject duties. It yields 42.9 N of net push at 0.5 MPa.
Built with a SUS304 stainless rod and barrel, the slim body fits tight jigs. The CB double clevis accommodates pivoting loads, while a fixed TPU bumper decelerates the stroke. Plan for a safe working load of about 26 N (roughly 60 percent of the 0.5 MPa rating) to account for seal friction.
Airtac PSB Single Acting Compact Cylinder PSB12X40CB Technical Specifications
| Model | Airtac PSB Single Acting Compact Cylinder PSB12X40CB |
|---|---|
| Series | PSB JIS pen-size mini cylinder |
| Bore size | Ø12 mm |
| Rod diameter | Ø5 mm |
| Stroke | 40 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 PSB12X40CB
| PSB | JIS pen-size single acting, push type (spring return) mini-cylinder series. |
|---|---|
| 12 | Bore size in mm. |
| ×40 | 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 PSB12X40CB Is Used
Pivoting Part Ejector
Uses the CB double clevis to swing and push finished metal parts off a CNC conveyor, relying on the spring to safely retract the pin on air loss.
Carton Flap Folder
Extends to fold cardboard flaps during case packing, with the fail-safe return preventing jams if the pneumatic supply drops unexpectedly.
Diverter Gate Actuator
Pushes a lightweight routing gate to sort items on a packaging line, benefiting from the single air line to simplify valving and tubing.
Is the Airtac PSB Single Acting Compact Cylinder PSB12X40CB 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 10 mm version offers 29.8 N at 0.5 MPa; for heavier jobs, the 16 mm delivers 74.8 N. Remember the internal spring requires at least 0.2 MPa before motion begins. The thin 5 mm rod handles coaxial thrust well, but over this 40 mm stroke you should add an external guide for any off-axis loads.
Confirm your ordering essentials: 12 mm bore, 40 mm stroke, CB double clevis back cover, and no magnet. The fixed TPU bumper only absorbs the final few millimeters, so meter-out the exhaust if moving real tooling mass at higher speeds.
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 PSB12X40CB FAQ
It delivers 42.9 N of net push at 0.5 MPa and 65.5 N at 0.7 MPa. Because an internal spring opposes the air stroke, a minimum of 0.2 MPa is required before the rod moves. The spring also ensures the rod fails safe retracted when air is removed.
It uses a fixed TPU bumper at each end to decelerate the last few millimeters of travel; it is not adjustable. The CB back cover provides a double clevis for pivoting loads. At higher speeds with heavy tooling, meter-out the exhaust or add an external shock absorber.
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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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