Airtac PSBR Single Acting Square Head Compact Cylinder PSBR12X40SU
The AirTAC Airtac PSBR Single Acting Square Head Compact Cylinder PSBR12X40SU 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
- 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 PSBR12X40SU
The AirTAC PSBR12X40SU is a single-acting push pen cylinder that extends via one M5x0.8 air port and retracts automatically via an internal spring. It delivers 42.9 N of net push at 0.5 MPa and 65.5 N at 0.7 MPa. A built-in piston magnet enables position sensing with reed or electronic switches.
This slim mini body bolts straight to your jig using its direct M5x0.8 front-cover mounting thread. The SUS316L stainless barrel suits damp environments, while a fixed TPU bumper cushions the stroke ends.
Airtac PSBR Single Acting Square Head Compact Cylinder PSBR12X40SU Technical Specifications
| Model | Airtac PSBR Single Acting Square Head Compact Cylinder PSBR12X40SU |
|---|---|
| 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 PSBR12X40SU
| 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 PSBR12X40SU Is Used
Part Ejection
Uses the spring return to safely pull back after pushing a machined part off a conveyor belt.
Panel Pusher
Bolts via the front thread to push lightweight electronic panels into test fixtures.
Clamp Release
Extends to relieve holding pressure, letting the internal spring retract the rod on air loss.
Is the Airtac PSBR Single Acting Square Head Compact Cylinder PSBR12X40SU the Right Cylinder?
This 12 mm bore provides 42.9 N net push at 0.5 MPa. If you need less force, the 10 mm bore yields 29.8 N; if you need more, the 16 mm bore yields 74.8 N. The internal return spring ensures the rod fails safe retracted on air loss, requiring only one solenoid line.
The direct front-cover M5x0.8 thread mounts flush without a separate bracket. The U suffix provides a 90-degree side air inlet for flat plumbing. Confirm your stroke does not exceed the 75 mm limit for this bore.
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 PSBR12X40SU FAQ
The net push force is 42.9 N at 0.5 MPa and 65.5 N at 0.7 MPa. Because it is spring-return, the spring sets a minimum pressure of 0.2 MPa before the rod moves, and the cylinder fails safe retracted on air loss.
It mounts directly via the M5x0.8 front-cover thread, eliminating separate brackets. The S suffix indicates a built-in piston magnet compatible with reed or electronic switches, and the SUS316L barrel resists corrosion.
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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