Airtac PSBR Single Acting Square Head Compact Cylinder PSBR12X25SR
The AirTAC Airtac PSBR Single Acting Square Head Compact Cylinder PSBR12X25SR 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 PSBR12X25SR
The AirTAC PSBR12X25SR is a JIS pen-size single-acting push cylinder with a 12mm bore and 25mm stroke. Air entering the M5x0.8 port extends the rod, while an internal spring ensures fail-safe retraction upon air loss. It supplies about 42.9 N of net push at 0.5 MPa, rising to 65.5 N at the 0.7 MPa maximum.
This model features a built-in piston magnet for reed or electronic switches and an R axial inlet. The direct M5x0.8 front-cover mounting thread allows straight bolting to your fixture, saving space. The SUS316L stainless barrel suits damp environments, and a fixed TPU bumper cushions the stroke ends.
Airtac PSBR Single Acting Square Head Compact Cylinder PSBR12X25SR Technical Specifications
| Model | Airtac PSBR Single Acting Square Head Compact Cylinder PSBR12X25SR |
|---|---|
| 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 PSBR12X25SR
| 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 PSBR12X25SR Is Used
Part Ejection
Uses the spring-return push to eject machined components from a jig, guaranteeing the arm pulls back safely if compressed air drops.
Panel Pusher
Bolts directly via the front-cover thread to push lightweight panels into a machining cell, keeping the assembly footprint minimal.
Clamp Release
Applies 42.9 N of net thrust at 0.5 MPa to disengage a holding clamp, relying on the internal spring to secure the retracted home position.
Is the Airtac PSBR Single Acting Square Head Compact Cylinder PSBR12X25SR the Right Cylinder?
This 12mm bore provides 42.9 N net push at 0.5 MPa. Stepping down to the 10mm bore yields 29.8 N, while the 16mm bore offers 74.8 N. Plan for a safe working load of roughly 26 N (about 60% of the 0.5 MPa figure) to account for seal friction. It can also lift about 2.2 kg vertically with a 2:1 safety margin.
The spring sets a 0.2 MPa minimum pressure before motion begins. The thin Ø5 mm rod is built for coaxial thrust, so add an external guide if handling off-axis loads. Confirm your M5x0.8 front-mount thread engagement and note the fixed TPU bumper may require exhaust metering at high speeds.
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 PSBR12X25SR FAQ
It delivers 42.9 N of net push at 0.5 MPa and 65.5 N at the 0.7 MPa maximum. Because it is spring-return, a 0.2 MPa minimum pressure is required to overcome the spring and extend the rod.
It mounts directly via an M5x0.8 front-cover thread. The -S suffix indicates a built-in piston magnet compatible with reed or electronic switches. The SUS316L stainless barrel provides corrosion resistance.
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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.
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Most inquiries answered within 7-8 hours.
Related AirTAC PSBR Pen-Size Cylinders
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