
The AirTAC Airtac PSBR Single Acting Square Head Compact Cylinder PSBR10X20R 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 Ø10mm bore, 20mm stroke; the return spring resets the rod when air is released.
The AirTAC PSBR10X20R is a JIS pen-size single-acting push cylinder with a 10mm bore and 20mm stroke. It provides 29.8 N of net push at 0.5 MPa and 45.5 N at 0.7 MPa. A built-in return spring ensures the rod retracts automatically on air loss, making it fail-safe for simple ejection tasks.
This compact actuator features a SUS316L stainless barrel and bolts directly via its front-cover M4x0.7 thread, eliminating bulky brackets. Air enters through the M5x0.8 port to extend the rod. A fixed TPU bumper cushions the stroke ends.
| Model | Airtac PSBR Single Acting Square Head Compact Cylinder PSBR10X20R |
|---|---|
| Series | PSBR JIS pen-size front-mount cylinder |
| Bore size | Ø10 mm |
| Rod diameter | Ø4 mm |
| Stroke | 20 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.
| Pressure | Net push force |
|---|---|
| 0.5 MPa | 29.8 N |
| 0.7 MPa (max) | 45.5 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.
| PSBR | JIS pen-size front-mount single acting, push type (spring return) series. |
|---|---|
| 10 | 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 (M4×0.7). Related PBR-family variants: PBR (double acting), PTBR (single-acting pull).
Uses the spring-return push to eject small machined components from a fixture, guaranteeing the arm pulls back safely if air pressure drops.
Advances a light panel into a testing cradle using the direct M4x0.7 front-mount thread to save space inside a densely packed electronics chassis.
Extends momentarily to unseat a filled carton from a packaging guide, relying on the fixed TPU bumper to soften the end-of-stroke impact.
This 10mm bore yields 29.8 N net push at 0.5 MPa. Stepping down, the Ø8 version provides 18.7 N, while stepping up to Ø12 offers 42.9 N. Choose the PSBR10X20R when your fixture requires moderate push force within a tight footprint. The direct front-cover M4x0.7 thread mounts straight to your jig, and the R axial inlet keeps plumbing in-line.
Remember the internal return spring sets a 0.2 MPa minimum pressure before motion begins. The rod is a slender 4mm, so use an external guide for any off-axis loads. Confirm your ordering code specifies the R back cover for axial air entry, as this model has no magnet.
Quick checklist
The usable push force is 29.8 N at 0.5 MPa and 45.5 N at 0.7 MPa. Because an internal spring retracts the rod, a minimum pressure of 0.2 MPa is required before the cylinder can move. The rod fails safe to the retracted position on air loss.
It mounts directly via a front-cover M4x0.7 thread, which bolts straight to your fixture without extra brackets. The barrel is made of SUS316L stainless steel for durability in damp environments, and the air inlet port is M5x0.8. This specific configuration does not include a sensor magnet.
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