Airtac PSBR Single Acting Square Head Compact Cylinder PSBR12X20R
The AirTAC Airtac PSBR Single Acting Square Head Compact Cylinder PSBR12X20R 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, 20mm stroke; the return spring resets the rod when air is released.
- BoreØ12 mm
- Stroke20 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 PSBR12X20R
The AirTAC PSBR12X20R is a JIS pen-size single-acting push cylinder with a 12mm bore and 20mm stroke. It supplies 42.9 N of net push at 0.5 MPa. A built-in return spring retracts the rod automatically when air pressure drops, ensuring a fail-safe home position. The SUS316L stainless barrel shrinks the footprint for tight jigs.
You mount this actuator directly via its front-cover M5x0.8 thread, eliminating extra brackets. Air enters the M5x0.8 port to extend the rod, while the R axial inlet keeps plumbing perfectly in-line. A fixed TPU bumper cushions the stroke ends. 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 PSBR12X20R Technical Specifications
| Model | Airtac PSBR Single Acting Square Head Compact Cylinder PSBR12X20R |
|---|---|
| Series | PSBR JIS pen-size front-mount cylinder |
| Bore size | Ø12 mm |
| Rod diameter | Ø5 mm |
| Stroke | 20 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 PSBR12X20R
| PSBR | JIS pen-size front-mount single acting, push type (spring return) series. |
|---|---|
| 12 | Bore size in mm. |
| ×20 | 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 PSBR12X20R Is Used
Part Ejection
Uses the spring-return push to eject small machined components from a fixture, guaranteeing the arm retracts safely if compressed air is lost.
Panel Pusher
Bolts directly via the front M5x0.8 thread to press a lightweight panel into a recessed slot within a compact assembly station.
Clamp Release
Applies 42.9 N of net push at 0.5 MPa to disengage a holding clamp, relying on the return spring to reset the mechanism.
Is the Airtac PSBR Single Acting Square Head Compact Cylinder PSBR12X20R the Right Cylinder?
This 12mm bore yields 42.9 N net push at 0.5 MPa and 65.5 N at the 0.7 MPa maximum. If you need less force, the 10mm bore version provides 29.8 N at 0.5 MPa. Stepping up to the 16mm bore raises output to 74.8 N at 0.5 MPa. The internal spring requires at least 0.2 MPa to overcome initial resistance before motion begins.
The direct M5x0.8 front-cover thread bolts straight to your fixture. The thin Ø5 mm piston rod handles coaxial thrust well, but add an external guide for any off-axis loads. This specific configuration includes an R axial back cover inlet and lacks a 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 PSBR12X20R FAQ
It delivers 42.9 N of net push at 0.5 MPa and 65.5 N at the 0.7 MPa maximum. Because a return spring is built in, a minimum pressure of 0.2 MPa is required before the rod extends. The spring automatically retracts the rod on air loss.
It mounts directly using the M5x0.8 thread on the front cover, saving space without extra brackets. This R variant features an axial air inlet, and the air supply connects via an M5x0.8 port. The SUS316L stainless barrel suits damp environments.
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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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