Airtac PSBR Single Acting Square Head Compact Cylinder PSBR12X25R
The AirTAC Airtac PSBR Single Acting Square Head Compact Cylinder PSBR12X25R is a single acting, push type (spring return) pen-size mini cylinder with direct front-cover mounting (M5×0.8 thread). A single air port drives the push stroke on a Ø12mm bore, 25mm stroke; the return spring resets the rod when air is released.
- BoreØ12 mm
- Stroke25 mm
- Port sizeM5×0.8
- Front-mount threadM5×0.8
- Acting typePush, single acting
- ReturnSpring
About the Airtac PSBR Single Acting Square Head Compact Cylinder PSBR12X25R
The AirTAC PSBR12X25R is a single-acting push pen cylinder that extends via one M5x0.8 air port and retracts via an internal spring. It provides 42.9 N of net push at 0.5 MPa and 65.5 N at 0.7 MPa. Because the return spring constantly pulls the rod home, the actuator fails safe to the retracted position on air loss. An R axial inlet accommodates in-line plumbing.
You mount this actuator directly using the M5x0.8 front-cover thread, eliminating extra brackets in tight jigs. The SUS316L stainless barrel shrinks the footprint while a fixed TPU bumper cushions the stroke ends. For practical sizing, plan for a safe working load of about 26 N, which is roughly 60 percent of the 0.5 MPa rating.
Airtac PSBR Single Acting Square Head Compact Cylinder PSBR12X25R Technical Specifications
| Model | Airtac PSBR Single Acting Square Head Compact Cylinder PSBR12X25R |
|---|---|
| Series | PSBR JIS pen-size front-mount cylinder |
| Bore size | Ø12 mm |
| Rod diameter | Ø5 mm |
| Stroke | 25 mm |
| Acting type | Single acting, push type (spring return) |
| Front-mount thread | M5×0.8 |
| Port size | M5×0.8 |
|---|---|
| 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 75 mm |
The spring holds the rod retracted; applying air pushes the rod out, and removing air lets the spring return it. Front cover carries the mounting thread (M5×0.8); barrel is SUS316L. Forces below are NET spring-deducted values. Confirm against the product label.
Net Push Force (Ø12mm)
| Pressure | Net push force |
|---|---|
| 0.5 MPa | 42.9 N |
| 0.7 MPa (max) | 65.5 N |
These are usable push forces after the return spring is subtracted, 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 PSBR Single Acting Square Head Compact Cylinder PSBR12X25R
| PSBR | JIS pen-size front-mount single acting, push type (spring return) series. |
|---|---|
| 12 | Bore size in mm. |
| ×25 | Stroke length in mm. |
| S | Built-in magnet for magnetic-switch position sensing (omit = no magnet). |
| U / R | Back cover: U 90° side inlet or R axial inlet (bore-dependent). |
Mounting: direct front-cover thread (M5×0.8). Related PBR-family variants: PBR (double acting), PTBR (single-acting pull).
Where the Airtac PSBR Single Acting Square Head Compact Cylinder PSBR12X25R Is Used
Part Ejector
Pushes machined components out of a fixture. The fail-safe retract spring guarantees the ejector clears the workspace if compressed air drops.
Panel Pusher
Advances a light panel into a testing cradle using the direct front-cover thread. The slim SUS316L barrel fits narrow machine gaps.
Clamp Release
Overrides a mechanical latch to free a workpiece. The single solenoid line simplifies wiring while the spring holds the latch open.
Is the Airtac PSBR Single Acting Square Head Compact Cylinder PSBR12X25R the Right Cylinder?
This 12 mm bore generates 42.9 N net push at 0.5 MPa. Stepping down to a 10 mm bore yields 29.8 N, while moving up to a 16 mm bore provides 74.8 N. Choose this 25 mm stroke model when your fixture needs moderate push force within a 75 mm maximum single-acting limit.
The internal spring requires a minimum 0.2 MPa to overcome its resistance before motion begins. Secure the cylinder via the direct M5x0.8 front-cover thread, and confirm your air line uses the separate M5x0.8 port. This specific configuration includes an R axial back cover inlet and no sensor magnet.
Quick checklist
- ✓ Net push force at your working pressure
- ✓ Bolt directly through the front cover (M5×0.8)
- ✓ Only one air line / solenoid needed
- ✓ Fail-safe retract on air loss
- ✓ Magnet (S) for sensors?
- ✓ Stroke ≤ 75 mm (single-acting limit)
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 Match bolt size and engagement to the front thread.
- check Do not add an external return mechanism.
- check Keep the load coaxial; avoid side load on the thin rod.
Airtac PSBR Single Acting Square Head Compact Cylinder PSBR12X25R FAQ
The bore delivers 42.9 N net push at 0.5 MPa and 65.5 N at 0.7 MPa. Because an internal spring drives the return, a minimum 0.2 MPa is required before the rod extends, and the cylinder fails safe to the retracted position on air loss.
It bolts directly to a fixture via the M5x0.8 front-cover thread. Air enters through a separate M5x0.8 port on the R axial inlet back cover. The SUS316L stainless barrel resists corrosion in damp environments.
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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 PSBR Pen-Size Cylinders
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