Airtac PSBR Single Acting Square Head Compact Cylinder PSBR12X40SR
The AirTAC Airtac PSBR Single Acting Square Head Compact Cylinder PSBR12X40SR 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, 40mm stroke; the return spring resets the rod when air is released.
- BoreØ12 mm
- Stroke40 mm
- Port sizeM5×0.8
- Front-mount threadM5×0.8
- Acting typePush, single acting
- ReturnSpring
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac PSBR Single Acting Square Head Compact Cylinder PSBR12X40SR
The AirTAC PSBR12X40SR is a JIS pen-size single-acting push cylinder with a 12mm bore and 40mm stroke. Air entering the M5x0.8 port extends the rod, while an internal spring retracts it on air loss for fail-safe operation. It provides 42.9 N of net push at 0.5 MPa and 65.5 N at 0.7 MPa.
This model features a built-in piston magnet for electronic or reed switches and an R axial inlet. The direct M5x0.8 front-cover mounting thread bolts straight to your fixture, saving space. A fixed TPU bumper decelerates the stroke ends, and the SUS316L stainless barrel suits damp environments.
Airtac PSBR Single Acting Square Head Compact Cylinder PSBR12X40SR Technical Specifications
| Model | Airtac PSBR Single Acting Square Head Compact Cylinder PSBR12X40SR |
|---|---|
| Series | PSBR JIS pen-size front-mount cylinder |
| Bore size | Ø12 mm |
| Rod diameter | Ø5 mm |
| Stroke | 40 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 PSBR12X40SR
| PSBR | JIS pen-size front-mount single acting, push type (spring return) series. |
|---|---|
| 12 | Bore size in mm. |
| ×40 | 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 PSBR12X40SR Is Used
Part Ejector
Pushes finished parts off a machining fixture; the spring automatically pulls the rod back when air drops.
Panel Pusher
Direct front-mount threads secure the body tightly to a narrow machine frame for compact sorting tasks.
Clamp Release
Applies 42.9 N of thrust to open a lightweight holding jig, returning to a safe closed state on air loss.
Is the Airtac PSBR Single Acting Square Head Compact Cylinder PSBR12X40SR the Right Cylinder?
This 12mm bore provides 42.9 N net push at 0.5 MPa, sitting between the 10mm (29.8 N) and 16mm (74.8 N) options. If your payload is lighter, the 10mm saves space; for heavier tooling, step up to the 16mm. The spring sets a 0.2 MPa minimum pressure before motion begins.
The Ø5 mm rod handles coaxial thrust well, but over long strokes add an external guide to prevent side load. Confirm the M5x0.8 front-mount thread engagement and select your preferred reed or solid-state switch.
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 PSBR12X40SR FAQ
It delivers 42.9 N net push at 0.5 MPa and 65.5 N at 0.7 MPa maximum. The internal return spring requires a minimum 0.2 MPa operating pressure to extend the rod, and the cylinder fails safely retracted if air is lost.
It mounts directly via an M5x0.8 thread on the front cover, eliminating extra brackets. The -S suffix indicates a built-in piston magnet compatible with AirTAC reed or electronic switches, housed inside a SUS316L stainless barrel.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models are processed and dispatched in 3-5 business days.
Fast Reply
Most inquiries answered within 7-8 hours.
Related AirTAC PSBR Pen-Size Cylinders
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