Airtac PSB Single Acting Compact Cylinder PSB16X40U
The AirTAC Airtac PSB Single Acting Compact Cylinder PSB16X40U is a single acting, push type (spring return) pen-size mini cylinder with a Ø16mm 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.
- BoreØ16 mm
- Stroke40 mm
- Port sizeM5×0.8
- Acting typePush, single acting
- Rod threadM10×1.0
- ReturnSpring
About the Airtac PSB Single Acting Compact Cylinder PSB16X40U
The AirTAC PSB16X40U is a single-acting push cylinder that extends its Ø5 mm rod using one air line, while an internal spring ensures fail-safe retraction upon exhaust. It supplies 74.8 N of net push at 0.5 MPa and 115 N at the 0.7 MPa maximum. The U suffix designates a 90-degree side inlet, keeping plumbing flat against your jig.
Built with a SUS304 stainless barrel and rod, this slim mini body saves space in tight assemblies. A fixed TPU bumper cushions the stroke ends. Because the return spring creates resistance, a minimum of 0.2 MPa is required before motion begins. Plan for a safe working load of roughly 45 N, which is about 60 percent of the 0.5 MPa rating, to account for seal friction.
Airtac PSB Single Acting Compact Cylinder PSB16X40U Technical Specifications
| Model | Airtac PSB Single Acting Compact Cylinder PSB16X40U |
|---|---|
| Series | PSB JIS pen-size mini cylinder |
| Bore size | Ø16 mm |
| Rod diameter | Ø5 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 (Ø16mm)
| Pressure | Net push force |
|---|---|
| 0.5 MPa | 74.8 N |
| 0.7 MPa (max) | 115.0 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 PSB16X40U
| PSB | JIS pen-size single acting, push type (spring return) mini-cylinder series. |
|---|---|
| 16 | 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 PSB16X40U Is Used
Part Ejector
Pushes finished machined brackets off a conveyor line; the spring safely pulls the rod back when air drops.
Carton Flap Folder
Extends to tuck minor flaps on a packing line, relying on the 90-degree side inlet to fit narrow machine gaps.
Clamp Release
Acts as a fail-safe release mechanism for a pneumatic clamp, automatically unlocking the part if compressed air fails.
Is the Airtac PSB Single Acting Compact Cylinder PSB16X40U the Right Cylinder?
This 16 mm bore provides the highest net push in the series at 74.8 N at 0.5 MPa, making it the top choice when the smaller 12 mm bore (42.9 N) lacks power. Since it is the largest available pen size, stepping up requires moving to a different body style. The 40 mm stroke sits comfortably within the 60 mm single-acting limit.
Remember the internal spring holds the rod retracted during any air loss, ideal for part ejection. The Ø5 mm rod handles coaxial thrust well, but over this 40 mm stroke you should add an external guide for off-axis loads. Confirm your ordering essentials: 16 mm bore, 40 mm stroke, U side inlet, and no magnet.
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 PSB16X40U FAQ
It delivers 74.8 N of net push at 0.5 MPa and 115 N at the 0.7 MPa maximum. Because an internal spring returns the rod, a minimum of 0.2 MPa is needed to overcome the spring before the cylinder moves.
It uses a fixed TPU bumper at each end to decelerate the last few millimeters of travel. The bumper is not adjustable, so at higher speeds with heavy 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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