Airtac PSB Single Acting Compact Cylinder PSB6X25SR
The AirTAC Airtac PSB Single Acting Compact Cylinder PSB6X25SR 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 PSB6X25SR
The AirTAC PSB6X25SR is a JIS pen-size single-acting push cylinder with a 6 mm bore and 25 mm stroke. Air entering the single M5x0.8 port extends the Ø3 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 and ejection tasks. It delivers 10.6 N of net push at 0.5 MPa.
Because the return spring constantly opposes motion, the cylinder requires a minimum 0.2 MPa to move. The built-in piston magnet (-S) supports AirTAC reed or electronic switches for position sensing. A fixed TPU bumper cushions the stroke ends, and the SUS304 stainless build suits damp or tight jigs. Plan for a safe working load of about 6 N, which is roughly 60 percent of the rated force, to account for friction.
Airtac PSB Single Acting Compact Cylinder PSB6X25SR Technical Specifications
| Model | Airtac PSB Single Acting Compact Cylinder PSB6X25SR |
|---|---|
| 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 PSB6X25SR
| 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 PSB6X25SR Is Used
Small Part Ejection
Pushes light stamped electronics from a die. The spring-return keeps the retracted path clear during air loss.
Package Diverter Gate
Acts as a lightweight routing flap on a packaging line. Fail-safe retract opens the lane when the line stops.
Lab Test Clamp
Holds a sample vial against a sensor. The single air line simplifies tubing while the bumper softens contact.
Is the Airtac PSB Single Acting Compact Cylinder PSB6X25SR the Right Cylinder?
This 6 mm bore provides 10.6 N net push at 0.5 MPa and 16.3 N at 0.7 MPa. If your task needs less force, the 4 mm bore offers 4.1 N at 0.5 MPa. For heavier pushing, step up to the 10 mm bore yielding 29.8 N at 0.5 MPa. The internal spring sets a 0.2 MPa minimum operating pressure before the rod extends. With a 2:1 safety margin, this model lifts about 0.5 kg vertically.
Confirm your ordering essentials: 6 mm bore, 25 mm stroke, built-in magnet (S), and R axial inlet. The slim Ø3 mm rod handles coaxial thrust only, so add an external guide for any off-axis loads. The fixed TPU bumper decelerates the final few millimeters, but meter-out the exhaust if moving heavy tooling mass at high 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 PSB6X25SR FAQ
The net push force is 10.6 N at 0.5 MPa and 16.3 N at 0.7 MPa. Because the internal return spring opposes the air stroke, a minimum operating pressure of 0.2 MPa is required before the rod moves.
The cylinder uses a fixed TPU bumper at each end to decelerate the last few millimeters of travel. The built-in magnet works with AirTAC reed or electronic switches for position sensing, and the spring ensures the rod retracts safely on air loss.
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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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Most inquiries answered within 7-8 hours.
Related AirTAC PSB Pen-Size Cylinders
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