Airtac PSBR Single Acting Square Head Compact Cylinder PSBR12X25U
The AirTAC Airtac PSBR Single Acting Square Head Compact Cylinder PSBR12X25U 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 PSBR12X25U
The AirTAC PSBR12X25U is a single-acting push pen cylinder that extends via one M5x0.8 air port and retracts via an internal spring. It delivers 42.9 N of net push at 0.5 MPa, providing fail-safe retraction on air loss. The U suffix indicates a 90-degree side inlet for flat plumbing in tight spaces.
A DIRECT M5x0.8 front-cover mounting thread bolts straight to your fixture, saving space without extra brackets. The SUS316L stainless barrel resists corrosion in damp environments. For practical sizing, plan for a safe working load of about 26 N, which accounts for seal friction. The fixed TPU bumper decelerates the rod near the end of stroke.
Airtac PSBR Single Acting Square Head Compact Cylinder PSBR12X25U Technical Specifications
| Model | Airtac PSBR Single Acting Square Head Compact Cylinder PSBR12X25U |
|---|---|
| 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 PSBR12X25U
| 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 PSBR12X25U Is Used
Part Ejector
Pushes machined pins out of a fixture. The spring automatically retracts the rod on air loss, preventing jams during machine stops.
Panel Pusher
Indexes lightweight electronic panels along a conveyor. The direct front-cover thread bolts directly to the conveyor frame.
Clamp Release
Overrides a mechanical latch to release clamped parts. The 90-degree side inlet keeps air lines flat against the assembly.
Is the Airtac PSBR Single Acting Square Head Compact Cylinder PSBR12X25U the Right Cylinder?
This 12 mm bore provides 42.9 N net push at 0.5 MPa. If you need less force, the 10 mm bore yields 29.8 N; for heavier tasks, the 16 mm bore offers 74.8 N. The internal spring requires a minimum 0.2 MPa operating pressure before the rod moves.
The DIRECT M5x0.8 front-cover thread mounts straight to your jig, while the M5x0.8 air port handles incoming air. The thin Ø5 mm piston rod is built for coaxial thrust, so add an external guide for any off-axis loads. Confirm your mounting thread engagement and the U side-inlet orientation when ordering.
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 PSBR12X25U FAQ
The net push force is 42.9 N at 0.5 MPa and 65.5 N at the 0.7 MPa maximum. Because an internal spring returns the rod, a minimum 0.2 MPa pressure is required to overcome the spring before extension.
It mounts directly via an M5x0.8 thread on the front cover, separate from the M5x0.8 air port. The SUS316L stainless barrel provides corrosion resistance for damp environments. This model has no magnet.
Authorized Export Seller
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 PSBR Pen-Size Cylinders
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