Airtac PSBR Single Acting Square Head Compact Cylinder PSBR12X50R
The AirTAC Airtac PSBR Single Acting Square Head Compact Cylinder PSBR12X50R 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, 50mm stroke; the return spring resets the rod when air is released.
- BoreØ12 mm
- Stroke50 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 PSBR12X50R
The AirTAC PSBR12X50R is a JIS pen-size single-acting push cylinder with a 12mm bore and 50mm stroke. Air entering the M5x0.8 port extends the rod, while an internal spring retracts it. It provides 42.9 N of net push at 0.5 MPa and 65.5 N at 0.7 MPa. The return spring ensures the rod fails safe to the retracted position on air loss, requiring only one solenoid line.
This model mounts directly via its front-cover M5x0.8 thread, saving space in tight jigs. The SUS316L stainless barrel suits damp environments, and a fixed TPU bumper cushions the stroke ends. For real-world sizing, plan for a safe working load of about 26 N (roughly 60% of the 0.5 MPa figure), which equates to lifting about 2.2 kg vertically with a 2:1 margin.
Airtac PSBR Single Acting Square Head Compact Cylinder PSBR12X50R Technical Specifications
| Model | Airtac PSBR Single Acting Square Head Compact Cylinder PSBR12X50R |
|---|---|
| Series | PSBR JIS pen-size front-mount cylinder |
| Bore size | Ø12 mm |
| Rod diameter | Ø5 mm |
| Stroke | 50 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 PSBR12X50R
| PSBR | JIS pen-size front-mount single acting, push type (spring return) series. |
|---|---|
| 12 | Bore size in mm. |
| ×50 | 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 PSBR12X50R Is Used
Part Ejector
Pushes machined components out of a fixture. The spring automatically retracts the rod when air stops, ensuring the ejector clears the workspace.
Panel Pusher
Advances a lightweight panel into a test station. The direct front-cover thread bolts directly to the machine frame to save build space.
Clamp Release
Overrides a mechanical clamp to release a packed carton. Fail-safe retraction keeps the clamp open if the air supply drops.
Is the Airtac PSBR Single Acting Square Head Compact Cylinder PSBR12X50R the Right Cylinder?
For a 12mm bore at 0.5 MPa, this model yields 42.9 N of usable thrust. If your fixture needs less force, stepping down to a 10mm bore provides 29.8 N. If pushing heavier parts, scaling up to a 16mm bore offers 74.8 N. The internal spring sets a 0.2 MPa minimum pressure before motion begins.
The direct M5x0.8 front-mount thread bolts straight to your fixture, eliminating extra brackets. The axial R back cover allows in-line plumbing. Because the 5mm rod is slender over this 50mm stroke, add an external linear bearing for any off-axis loads.
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 PSBR12X50R FAQ
The net push force is 42.9 N at 0.5 MPa and 65.5 N at the 0.7 MPa maximum. The internal return spring requires a minimum of 0.2 MPa before the rod can extend. The spring also pulls the rod back automatically on air loss.
It mounts directly via an M5x0.8 thread on the front cover, which bolts straight into your jig without a separate bracket. The barrel is made of SUS316L stainless steel for durability in damp environments. This specific model does not include a sensor magnet.
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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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Related AirTAC PSBR Pen-Size Cylinders
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