Airtac PSB Single Acting Compact Cylinder PSB6X40SR
The AirTAC Airtac PSB Single Acting Compact Cylinder PSB6X40SR is a single acting, push type (spring return) pen-size mini cylinder with a Ø6mm bore and 40mm stroke. A single air port drives the push stroke; the built-in return spring resets the rod when air is released, so only one solenoid line is needed.
- BoreØ6 mm
- Stroke40 mm
- Port sizeM5×0.8
- Acting typePush, single acting
- Rod threadM5×0.8
- ReturnSpring
About the Airtac PSB Single Acting Compact Cylinder PSB6X40SR
The AirTAC PSB6X40SR is a JIS pen-size single-acting push cylinder with a 6 mm bore and 40 mm stroke. Air entering the single M5x0.8 port extends the Ø3 mm rod, while an internal spring retracts it upon exhaust release. This single-line design simplifies valving and tubing, providing 10.6 N of net push at 0.5 MPa after spring deduction.
Built with a SUS304 stainless barrel and slim body, it fits tight jigs and light end-of-arm tooling. The built-in magnet (-S) supports reed or electronic switches, and the R axial inlet keeps plumbing inline. A fixed TPU bumper cushions the stroke ends, though at higher speeds with real mass you should meter-out the exhaust or add an external shock absorber.
Airtac PSB Single Acting Compact Cylinder PSB6X40SR Technical Specifications
| Model | Airtac PSB Single Acting Compact Cylinder PSB6X40SR |
|---|---|
| Series | PSB JIS pen-size mini cylinder |
| Bore size | Ø6 mm |
| Rod diameter | Ø3 mm |
| Stroke | 40 mm |
| Acting type | Single acting, push type (spring return) |
| Port size | M5×0.8 |
| Fluid | Air (filtered by 40µm element) |
|---|---|
| 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. Forces below are the NET spring-deducted values from the AirTAC thrust table. Confirm against the product label before installation.
Net Push Force (Ø6mm)
| Pressure | Net push force |
|---|---|
| 0.5 MPa | 10.6 N |
| 0.7 MPa (max) | 16.3 N |
These are the usable push forces after the return spring is subtracted, taken directly 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 PSB Single Acting Compact Cylinder PSB6X40SR
| PSB | JIS pen-size single acting, push type (spring return) mini-cylinder series. |
|---|---|
| 6 | Bore size in mm. |
| ×40 | Stroke length in mm. |
| S | Built-in magnet for magnetic-switch position sensing (omit = no magnet). |
| R / U / CB | Back cover: R axial inlet, U 90° side inlet, CB double clevis (bore-dependent). |
Mounting accessories: LB, FA, CJ. Related PB-family variants: PB (double acting), PTB (single-acting pull), PBD (double rod), PBR (front-mount).
Where the Airtac PSB Single Acting Compact Cylinder PSB6X40SR Is Used
Small Part Ejection
Pushes lightweight plastic components out of a machining fixture, with the spring safely pulling the rod back when air drops.
Package Deflector
Acts as a compact sorting gate on a narrow conveyor, using 10.6 N net push to redirect small cartons down a chute.
Lab Sample Clamp
Holds a delicate test tube against a sensor plate, providing a gentle 6 N safe working load without crushing the glass.
Is the Airtac PSB Single Acting Compact Cylinder PSB6X40SR the Right Cylinder?
At 0.5 MPa this 6 mm bore yields 10.6 N net push (16.3 N at the 0.7 MPa maximum). Plan for a safe working load of about 6 N (roughly 60% of the 0.5 MPa figure) to account for seal friction. If you need less force, the Ø4 bore offers 4.1 N; for heavier tasks, the Ø10 bore provides 29.8 N. The internal spring ensures the rod fails-safe to the retracted position on air loss, but also sets a 0.2 MPa minimum pressure before motion begins.
With a 40 mm stroke, the slender Ø3 mm rod needs an external guide or linear bearing to prevent side-loading. Confirm your ordering essentials: 6 mm bore, 40 mm stroke, -S magnet, R axial back cover, and any LB/FA/CJ mounting brackets.
Quick checklist
- ✓ Net push force at your working pressure
- ✓ Only one air line / solenoid needed
- ✓ Fail-safe retract on air loss
- ✓ Magnet (S) for sensors?
- ✓ Stroke ≤ 60 mm (single-acting limit)
- ✓ Keep the load coaxial — avoid side load
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 Do not add an external return mechanism.
- check Keep the load coaxial; avoid side load on the thin rod.
- check Do not dismantle the front or back cover.
Airtac PSB Single Acting Compact Cylinder PSB6X40SR FAQ
The net usable push force is 10.6 N at 0.5 MPa and 16.3 N at 0.7 MPa (the maximum operating pressure). Because the internal return spring opposes the air stroke, a minimum of 0.2 MPa is required before the rod moves. On air loss, the spring fails-safe to the retracted position.
The -S suffix indicates a built-in piston magnet compatible with AirTAC reed or electronic switches. Cushioning is handled by a fixed TPU bumper at each end that decelerates the last few millimeters of travel. It is not adjustable, so at high speeds with real tooling mass you should meter-out the exhaust or add an external shock absorber.
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1-Year Warranty
Covers non-human-caused product damage.
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Standard models usually ship in 3-4 days.
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Related AirTAC PSB Pen-Size Cylinders
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