Airtac PSBR Single Acting Square Head Compact Cylinder PSBR12X40R
The AirTAC Airtac PSBR Single Acting Square Head Compact Cylinder PSBR12X40R 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, 40mm stroke; the return spring resets the rod when air is released.
- BoreØ12 mm
- Stroke40 mm
- Port sizeM5×0.8
- Front-mount threadM5×0.8
- Acting typePush, single acting
- ReturnSpring
About the Airtac PSBR Single Acting Square Head Compact Cylinder PSBR12X40R
The AirTAC PSBR12X40R is a single-acting push pen cylinder that extends via one air port and uses an internal spring to retract. It supplies about 42.9 N of net push force at 0.5 MPa, with the spring deduction already applied. The fail-safe spring design ensures the rod pulls safely back to its home position whenever air pressure drops.
This 12 mm bore, 40 mm stroke unit features a direct M5x0.8 front-cover mounting thread for bolting straight into tight fixtures. The SUS316L stainless barrel shrinks the footprint for light end-of-arm tooling. Air connects through an M5x0.8 port, and a fixed TPU bumper cushions the stroke ends. For smooth operation, plan for a safe working load of roughly 26 N, which is about 60 percent of the rated 0.5 MPa push force.
Airtac PSBR Single Acting Square Head Compact Cylinder PSBR12X40R Technical Specifications
| Model | Airtac PSBR Single Acting Square Head Compact Cylinder PSBR12X40R |
|---|---|
| Series | PSBR JIS pen-size front-mount cylinder |
| Bore size | Ø12 mm |
| Rod diameter | Ø5 mm |
| Stroke | 40 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 PSBR12X40R
| PSBR | JIS pen-size front-mount single acting, push type (spring return) series. |
|---|---|
| 12 | Bore size in mm. |
| ×40 | 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 PSBR12X40R Is Used
Part Ejector
Pushes machined parts off a conveyor line with 42.9 N net force, relying on the spring to retract safely during air loss.
Panel Pusher
Direct front-mount M5x0.8 thread bolts straight into tight jig frames to push lightweight panels into a nesting fixture.
Clamp Release
Applies targeted push pressure to disengage a holding clamp, with the TPU bumper absorbing the impact at full extension.
Is the Airtac PSBR Single Acting Square Head Compact Cylinder PSBR12X40R the Right Cylinder?
This 12 mm bore yields 42.9 N net push at 0.5 MPa and 65.5 N at the 0.7 MPa maximum. If your task needs less force, the 10 mm bore version offers 29.8 N at 0.5 MPa. If you require more power, stepping up to the 16 mm bore provides 74.8 N at 0.5 MPa. The internal return spring sets a 0.2 MPa minimum pressure before the rod moves, and the direct front-mount thread simplifies placement.
The slim Ø5 mm rod handles coaxial thrust well, but over this 40 mm stroke or under off-axis loads you should add an external guide or linear bearing to prevent side load damage. The R axial inlet keeps plumbing perfectly in-line. Confirm your M5x0.8 mounting thread engagement when bolting to bottom surfaces.
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 PSBR12X40R FAQ
It delivers 42.9 N net push at 0.5 MPa and 65.5 N at 0.7 MPa. Because it is single-acting push with a return spring, it requires a minimum of 0.2 MPa to overcome the spring and move the rod.
The cylinder bolts directly via an M5x0.8 front-cover thread, eliminating extra brackets. The SUS316L stainless barrel provides corrosion resistance in damp environments, and the R axial inlet keeps air plumbing in-line.
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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