Airtac PSBR Single Acting Square Head Compact Cylinder PSBR8X30SR
The AirTAC Airtac PSBR Single Acting Square Head Compact Cylinder PSBR8X30SR 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, 30mm stroke; the return spring resets the rod when air is released.
- BoreØ8 mm
- Stroke30 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 PSBR8X30SR
The AirTAC PSBR8X30SR is a JIS pen-size single-acting push cylinder with a 30mm stroke. Air entering the M5x0.8 port extends the rod, while an internal spring ensures fail-safe retraction upon air loss. It supplies 18.7N of net push at 0.5MPa, with the return spring force already deducted.
You bolt this slim SUS316L stainless body straight to a jig via the direct M4x0.7 front-cover thread, saving space. The integrated -S magnet works with reed or electronic switches for position sensing. A fixed TPU bumper cushions the stroke ends, and the axial R back-cover inlet keeps plumbing perfectly in-line.
Airtac PSBR Single Acting Square Head Compact Cylinder PSBR8X30SR Technical Specifications
| Model | Airtac PSBR Single Acting Square Head Compact Cylinder PSBR8X30SR |
|---|---|
| Series | PSBR JIS pen-size front-mount cylinder |
| Bore size | Ø8 mm |
| Rod diameter | Ø4 mm |
| Stroke | 30 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 PSBR8X30SR
| PSBR | JIS pen-size front-mount single acting, push type (spring return) series. |
|---|---|
| 8 | Bore size in mm. |
| ×30 | 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 PSBR8X30SR Is Used
Part Ejection
Uses the spring-return push to eject small machined components from a fixture, ensuring the arm safely retracts if compressed air drops.
Panel Pusher
Bolts via the front M4x0.7 thread to press a lightweight panel into a locating slot, saving space in tight assembly modules.
Clamp Release
Extends to hold a carton flap for gluing, then relies on the internal spring to pull back and clear the packaging path.
Is the Airtac PSBR Single Acting Square Head Compact Cylinder PSBR8X30SR the Right Cylinder?
This 8mm bore yields 18.7N net push at 0.5MPa and 28.7N at 0.7MPa. Stepping down to a 6mm bore gives 10.6N, while a 10mm bore provides 29.8N. Plan for a safe working load of about 11N, which is roughly 60% of the 0.5MPa rating, to account for friction. This also equates to lifting about 1kg vertically with a 2:1 safety margin.
The return spring sets a 0.2MPa minimum pressure before motion begins. The direct M4x0.7 front-mount thread secures it without extra brackets, and the single solenoid line keeps wiring simple. The thin 4mm rod requires an external guide if subjected to 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 PSBR8X30SR FAQ
The net push force is 18.7N at 0.5MPa and 28.7N at 0.7MPa (maximum pressure). Because it is spring-return, a minimum of 0.2MPa is required to overcome the spring and extend the rod.
It mounts directly via the M4x0.7 thread on the front cover, eliminating separate brackets. The included -S magnet supports both reed and electronic switches for position detection.
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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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Most inquiries answered within 7-8 hours.
Related AirTAC PSBR Pen-Size Cylinders
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