Airtac PSBR Single Acting Square Head Compact Cylinder PSBR8X15R
The AirTAC Airtac PSBR Single Acting Square Head Compact Cylinder PSBR8X15R is a single acting, push type (spring return) pen-size mini cylinder with direct front-cover mounting (M4×0.7 thread). A single air port drives the push stroke on a Ø8mm bore, 15mm stroke; the return spring resets the rod when air is released.
- BoreØ8 mm
- Stroke15 mm
- Port sizeM5×0.8
- Front-mount threadM4×0.7
- Acting typePush, single acting
- ReturnSpring
About the Airtac PSBR Single Acting Square Head Compact Cylinder PSBR8X15R
The AirTAC PSBR8X15R is a JIS pen-size single-acting push cylinder with a 15 mm stroke. Air entering the M5x0.8 port extends the Ø4 mm rod, while an internal spring retracts it on air loss for fail-safe retraction. It supplies 18.7 N of net push at 0.5 MPa, rising to 28.7 N at the 0.7 MPa maximum.
You bolt this slim SUS316L stainless body straight to a fixture via the direct M4x0.7 front-cover thread. The R axial inlet keeps plumbing perfectly in-line to save space. A fixed TPU bumper cushions the stroke ends, and the spring sets a 0.2 MPa minimum pressure before motion begins.
Airtac PSBR Single Acting Square Head Compact Cylinder PSBR8X15R Technical Specifications
| Model | Airtac PSBR Single Acting Square Head Compact Cylinder PSBR8X15R |
|---|---|
| Series | PSBR JIS pen-size front-mount cylinder |
| Bore size | Ø8 mm |
| Rod diameter | Ø4 mm |
| Stroke | 15 mm |
| Acting type | Single acting, push type (spring return) |
| Front-mount thread | M4×0.7 |
| 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 60 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 (M4×0.7); barrel is SUS316L. Forces below are NET spring-deducted values. Confirm against the product label.
Net Push Force (Ø8mm)
| Pressure | Net push force |
|---|---|
| 0.5 MPa | 18.7 N |
| 0.7 MPa (max) | 28.7 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 PSBR8X15R
| PSBR | JIS pen-size front-mount single acting, push type (spring return) series. |
|---|---|
| 8 | Bore size in mm. |
| ×15 | 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 (M4×0.7). Related PBR-family variants: PBR (double acting), PTBR (single-acting pull).
Where the Airtac PSBR Single Acting Square Head Compact Cylinder PSBR8X15R Is Used
Short-Stroke Part Ejector
Pushes small stamped parts out of a die using 18.7 N of force, with the spring safely pulling the rod back when air is cut.
Panel Push-Off Station
Ejects thin electronic panels from a test nest using the direct M4x0.7 front thread to save valuable jig space.
Clamp Release Mechanism
Opens a lightweight holding clamp via the axial R inlet; the fail-safe retract automatically releases tension on air loss.
Is the Airtac PSBR Single Acting Square Head Compact Cylinder PSBR8X15R the Right Cylinder?
This 8 mm bore provides 18.7 N net push at 0.5 MPa. Stepping down to the 6 mm bore yields 10.6 N, while the 10 mm bore offers 29.8 N, letting you match exact clamping needs. Plan for a safe working load of about 11 N, which is roughly 60 percent of the 0.5 MPa rating, to account for seal friction.
The direct M4x0.7 front mount eliminates extra brackets, and the spring ensures the rod returns home safely if air pressure drops. Confirm your porting needs, as this R variant features an axial inlet. The thin Ø4 mm rod handles coaxial thrust well, but add an external guide for any off-axis loads.
Quick checklist
- ✓ Net push force at your working pressure
- ✓ Bolt directly through the front cover (M4×0.7)
- ✓ Only one air line / solenoid needed
- ✓ Fail-safe retract on air loss
- ✓ Magnet (S) for sensors?
- ✓ Stroke ≤ 60 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 PSBR8X15R FAQ
It delivers 18.7 N of net push at 0.5 MPa and 28.7 N at the 0.7 MPa maximum. Because it is spring-return, a minimum pressure of 0.2 MPa is required before the rod moves, and the spring holds the rod retracted on air loss.
It mounts directly via the M4x0.7 thread on the front cover, requiring no separate bracket. A fixed TPU bumper decelerates the last few millimeters of travel, but at higher speeds with real tooling mass you should meter-out the exhaust or add an external shock absorber.
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Genuine AirTAC parts produced by AirTAC factory.
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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