Airtac PSB Single Acting Compact Cylinder PSB6X25R
The AirTAC Airtac PSB Single Acting Compact Cylinder PSB6X25R is a single acting, push type (spring return) pen-size mini cylinder with a Ø6mm bore and 25mm 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.
- BoreØ6 mm
- Stroke25 mm
- Port sizeM5×0.8
- Acting typePush, single acting
- Rod threadM5×0.8
- ReturnSpring
About the Airtac PSB Single Acting Compact Cylinder PSB6X25R
The AirTAC PSB6X25R is a JIS pen-size single-acting push cylinder that extends its Ø3 mm rod via one M5x0.8 air port. An internal spring brings the rod home automatically when exhaust occurs, ensuring a fail-safe retracted state if air pressure drops. You get 10.6 N of net push at 0.5 MPa, making it ideal for light-duty ejection and clamping.
Built with a SUS304 stainless barrel and a slim mini body, it fits easily into tight jigs and end-of-arm tooling. The fixed TPU bumper cushions the last few millimeters of travel, while the R axial inlet keeps plumbing neatly in line. Plan for a safe working load of roughly 6 N to account for seal friction and smooth motion.
Airtac PSB Single Acting Compact Cylinder PSB6X25R Technical Specifications
| Model | Airtac PSB Single Acting Compact Cylinder PSB6X25R |
|---|---|
| Series | PSB JIS pen-size mini cylinder |
| Bore size | Ø6 mm |
| Rod diameter | Ø3 mm |
| Stroke | 25 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 (Ø6mm)
| Pressure | Net push force |
|---|---|
| 0.5 MPa | 10.6 N |
| 0.7 MPa (max) | 16.3 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 PSB6X25R
| PSB | JIS pen-size single acting, push type (spring return) mini-cylinder series. |
|---|---|
| 6 | Bore size in mm. |
| ×25 | 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 PSB6X25R Is Used
Small Part Ejection
Pushes lightweight plastic components out of machining fixtures, relying on the spring to retract safely when air is cut.
Sorting Diverter
Acts as a compact gate to deflect small items on a packaging line, saving space with its pen-size body.
Test Probe Actuation
Applies a precise 6 N safe contact force against electronic test points before springing back to a home position.
Is the Airtac PSB Single Acting Compact Cylinder PSB6X25R the Right Cylinder?
This 6 mm bore generates 10.6 N net push at 0.5 MPa. If you need less force, the Ø4 bore offers 4.1 N; for heavier tasks, the Ø10 bore provides 29.8 N. A minimum of 0.2 MPa is required to overcome the return spring before the rod moves. The 25 mm stroke is well within the 60 mm single-acting limit.
Confirm your ordering essentials: 6 mm bore, 25 mm stroke, R axial back cover, and no magnet (S). Because the Ø3 mm rod is slender, add an external guide for any off-axis loads over this 25 mm travel.
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 PSB6X25R FAQ
It provides 10.6 N net push at 0.5 MPa and 16.3 N at 0.7 MPa maximum. The internal spring requires at least 0.2 MPa before the rod extends, and the cylinder fails safely retracted on air loss.
It uses a fixed TPU bumper at the end of stroke to decelerate the rod over the last few millimeters. It is not adjustable, so at higher speeds with real tooling mass you should 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 usually ship in 3-4 days.
Fast Reply
Most inquiries answered within 7-8 hours.
Related AirTAC PSB Pen-Size Cylinders
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