Airtac PSB Single Acting Compact Cylinder PSB16X20SU
The AirTAC Airtac PSB Single Acting Compact Cylinder PSB16X20SU is a single acting, push type (spring return) pen-size mini cylinder with a Ø16mm bore and 20mm 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
- Stroke20 mm
- Port sizeM5×0.8
- Acting typePush, single acting
- Rod threadM10×1.0
- ReturnSpring
About the Airtac PSB Single Acting Compact Cylinder PSB16X20SU
The AirTAC PSB16X20SU is a JIS pen-size single-acting push cylinder that extends its Ø5 mm rod via one M5x0.8 air line. A built-in spring handles the exhaust return, meaning you only need one solenoid for simpler tubing and lower wiring costs. It supplies 74.8 N of net push at 0.5 MPa and 115 N at the 0.7 MPa maximum.
This variant includes a built-in piston magnet for position sensing with reed or electronic switches, plus a U-type 90-degree side inlet for flat plumbing. The SUS304 stainless body fits tight jigs, and a fixed TPU bumper cushions the stroke ends. Plan for a safe working load of about 45 N, which is roughly 60 percent of the 0.5 MPa rating to account for seal friction.
Airtac PSB Single Acting Compact Cylinder PSB16X20SU Technical Specifications
| Model | Airtac PSB Single Acting Compact Cylinder PSB16X20SU |
|---|---|
| Series | PSB JIS pen-size mini cylinder |
| Bore size | Ø16 mm |
| Rod diameter | Ø5 mm |
| Stroke | 20 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 PSB16X20SU
| PSB | JIS pen-size single acting, push type (spring return) mini-cylinder series. |
|---|---|
| 16 | Bore size in mm. |
| ×20 | 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 PSB16X20SU Is Used
Part Ejection
Uses the spring-return push to eject machined components from a CNC fixture, ensuring the rod safely retracts if air pressure drops.
Gate Diverter
Actuates a lightweight routing gate on a packaging line, with the 90-degree side inlet keeping the profile flat against the frame.
Clamp Release
Holds a carton briefly for labeling, then relies on the fail-safe spring retract to clear the space when the line halts.
Is the Airtac PSB Single Acting Compact Cylinder PSB16X20SU the Right Cylinder?
This 16 mm bore provides 74.8 N net push at 0.5 MPa. If you need less force, the 12 mm bore offers 42.9 N; since 16 mm is the largest in this series, moving beyond 115 N at 0.7 MPa requires a different body type. The internal spring ensures the rod retracts safely upon air loss, but it also sets a 0.2 MPa minimum pressure before motion begins.
The Ø5 mm rod is built for coaxial thrust, so over this 20 mm stroke or with off-axis loads, add an external guide to prevent side loading. Confirm your ordering essentials: 16 mm bore, 20 mm stroke, S magnet, U side inlet, and your preferred mounting bracket.
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 PSB16X20SU FAQ
The net push force is 74.8 N at 0.5 MPa and 115 N at 0.7 MPa. Because the internal return spring opposes the air stroke, a minimum of 0.2 MPa is required before the rod extends.
It uses a fixed TPU bumper to decelerate the stroke at both ends. The S suffix denotes a built-in piston magnet for trackable positioning with reed or solid-state electronic switches.
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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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