Airtac PSBR Single Acting Square Head Compact Cylinder PSBR8X30U
The AirTAC Airtac PSBR Single Acting Square Head Compact Cylinder PSBR8X30U 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 PSBR8X30U
The AirTAC PSBR8X30U is a single-acting push pen-size mini cylinder with a 30 mm stroke. Air entering the M5x0.8 port extends the rod, while an internal spring retracts it on air release, ensuring a fail-safe retracted position. It supplies 18.7 N of net push at 0.5 MPa and 28.7 N at 0.7 MPa.
This model bolts directly to a fixture via its front-cover M4x0.7 thread, saving space in tight jigs. The SUS316L stainless barrel resists corrosion in damp environments. A fixed TPU bumper cushions the stroke ends, and the U back cover provides a 90-degree side inlet for flat plumbing. Plan for a safe working load of about 11 N, which accounts for seal friction and smooth travel.
Airtac PSBR Single Acting Square Head Compact Cylinder PSBR8X30U Technical Specifications
| Model | Airtac PSBR Single Acting Square Head Compact Cylinder PSBR8X30U |
|---|---|
| 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 PSBR8X30U
| 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 PSBR8X30U Is Used
Panel Pusher
Uses the 18.7 N net push to index thin panels forward, with the spring returning the rod automatically when air stops.
Part Ejector
Mounts directly via the M4x0.7 front thread to push light parts off a belt, relying on fail-safe retraction to clear the path.
Clamp Release
Applies a safe 11 N working load to hold a small workpiece, releasing it instantly when the single solenoid line vents.
Is the Airtac PSBR Single Acting Square Head Compact Cylinder PSBR8X30U the Right Cylinder?
Selecting this 8 mm bore yields 18.7 N net push at 0.5 MPa. If your task needs less force, the 6 mm bore offers 10.6 N; stepping up to the 10 mm bore provides 29.8 N. The internal spring sets a 0.2 MPa minimum pressure before motion begins, and the unit fails safe to the retracted position on air loss.
The direct front-cover M4x0.7 thread mounts straight to your tooling without extra brackets. The thin 4 mm rod handles coaxial thrust well, but over this 30 mm stroke or under off-axis loads, add an external guide or linear bearing to prevent side-load wear. Confirm the 90-degree side inlet fits your plumbing path.
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 PSBR8X30U FAQ
It delivers 18.7 N net push at 0.5 MPa and 28.7 N at 0.7 MPa. The return spring requires a minimum of 0.2 MPa to overcome the spring and move the rod.
It mounts directly via the front-cover M4x0.7 thread. The barrel is SUS316L stainless steel, and the U back cover features a 90-degree side air inlet for compact routing.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models usually ship in 3-4 days.
Fast Reply
Most inquiries answered within 7-8 hours.
Related AirTAC PSBR Pen-Size Cylinders
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