Airtac PSBR Single Acting Square Head Compact Cylinder PSBR12X20SU
The AirTAC Airtac PSBR Single Acting Square Head Compact Cylinder PSBR12X20SU 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
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac PSBR Single Acting Square Head Compact Cylinder PSBR12X20SU
The AirTAC PSBR12X20SU is a single-acting push pen cylinder with a 12mm bore and 20mm stroke. Air entering the M5x0.8 port extends the rod, while an internal spring retracts it. This fail-safe design ensures the rod returns home on air loss. It delivers 42.9 N of net push at 0.5 MPa, with the spring force already deducted.
You mount this cylinder directly via its front-cover M5x0.8 thread, eliminating extra brackets for tight jigs. The SUS316L stainless barrel resists corrosion in damp environments. A built-in magnet enables position sensing with reed or electronic switches, while a fixed TPU bumper cushions the stroke ends.
Airtac PSBR Single Acting Square Head Compact Cylinder PSBR12X20SU Technical Specifications
| Model | Airtac PSBR Single Acting Square Head Compact Cylinder PSBR12X20SU |
|---|---|
| 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 PSBR12X20SU
| 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 PSBR12X20SU Is Used
Part Ejector
Pushes finished parts off a conveyor line. The spring-return design saves air by using one solenoid line, and fail-safe retract prevents jams during a pressure drop.
Panel Pusher
Indexes lightweight panels into a testing fixture. The direct front-mount M5x0.8 thread bolts straight to the machine frame, keeping the overall footprint slim.
Clamp Release
Overcomes a mechanical clamp spring to release a workpiece. The 90-degree side inlet allows neat tubing runs in confined tooling spaces.
Is the Airtac PSBR Single Acting Square Head Compact Cylinder PSBR12X20SU the Right Cylinder?
This 12mm bore provides 42.9 N net push at 0.5 MPa and 65.5 N at 0.7 MPa. If you need less force, the 10mm bore offers 29.8 N at 0.5 MPa. For heavier tasks, the 16mm bore yields 74.8 N at 0.5 MPa.
The U suffix adds a 90-degree side air inlet for flat plumbing. The internal spring sets a 0.2 MPa minimum pressure before motion begins. Use the direct M5x0.8 front-cover thread for secure attachment, and add an external guide if your application involves off-axis loads on the 5mm rod.
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 PSBR12X20SU FAQ
The net push force is 42.9 N at 0.5 MPa and 65.5 N at 0.7 MPa. Because it is single-acting push, the internal return spring is already deducted from these figures. The spring sets a 0.2 MPa minimum pressure before the rod extends.
The S suffix indicates a built-in piston magnet compatible with reed or electronic switches. Mounting is direct via the front-cover M5x0.8 thread, which bolts straight into your fixture without a separate bracket.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models are processed and dispatched in 3-5 business days.
Fast Reply
Most inquiries answered within 7-8 hours.
Related AirTAC PSBR Pen-Size Cylinders
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