
The AirTAC SAIJ80 Adjustable Cylinder SAIJ80AX150-75 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 150mm stroke, G3/8 air ports and adjustable end cushioning. Its standardized mounting interface makes it interchangeable with other ISO 15552 cylinders at the mounting interface.
The AirTAC SAIJ80X150-75 is a double-acting ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster that allows you to trim the effective travel back by up to 75 mm. This creates a highly flexible usable stroke window of 75 to 150 mm, letting you dial in the exact end position during commissioning without swapping out the barrel. The 80 mm bore delivers substantial thrust, pushing with 2513 N and pulling with 2268 N at a 0.5 MPa operating pressure.
Built with a SUS420J2 stainless steel rod for enhanced corrosion resistance, this model uses a PT tapered port thread and operates at speeds between 30 and 800 mm/s. The extruded aluminum barrel includes sensor grooves on both sides for flexible switch placement. It is important to note that the rear adjuster acts strictly as a travel stop to set deceleration points and does not function as a load-holding lock when air pressure is removed.
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80AX150-75 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 150 mm |
| Acting type | Double acting |
| Port size | G3/8 |
| Rod thread | M20×1.5 |
| Fluid | Air (filtered by 40µm element) |
|---|---|
| Operating pressure | 0.15 – 1.0 MPa |
| Proof pressure | 1.5 MPa |
| Temperature | -20 to +70 °C |
| Speed range | 30 – 800 mm/s |
| Cushion | Adjustable, 36 mm |
| Max stroke | Up to 1500 mm |
Specifications follow the official AirTAC SAI series datasheet and ISO 15552 dimensions. Confirm against the product label before installation. Port options: G (BSPP) / NPT.
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 2268 N | 2268 N |
| 0.7 MPa | 3175 N | — |
| Max (@1.0 MPa) | 463 kgf | |
Double-rod model: the rod passes through the rear cover, so both piston faces lose rod area and push is shown at the annular-area value. Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×150 | Stroke length in mm. |
| -S | Optional built-in magnet for sensor position sensing. |
Related SAI-family variants: SAID (double rod), SAIJ (adjustable stroke), SAIL (with lock), SAIF (with valve), BSAI (enclasp / clamp-lock), and SAI-S with built-in magnet. Rod material: carbon steel (blank) / SUS420J2 (A) / SUS304 (B); seals: TPU (blank) / Viton H / NBR N.
Fine-tune the retract end position from 75 to 150 mm during machine changeover to accommodate varying product lengths without replacing hardware.
Dial in the exact 80 mm bore clamping distance—up to 2513 N at 0.5 MPa—during setup to prevent overtravel and workpiece damage.
Use the rear stopper screw to set precise deceleration points at the end of travel, optimizing cycle times without external stops.
Choose this 80 mm bore adjustable cylinder when your application requires a variable end-stop within a 75 to 150 mm travel window, avoiding the need to inventory multiple fixed-stroke SAI cylinders for different product sizes.
Because this is an adjustable-stroke profile cylinder, the mounting interface is limited to Basic, FA, LB, TC, FTC, TCM1, and TCM2 configurations, omitting the FB, CA, CB, and CR mounts. For any load-holding requirements without live air pressure, a plain SAIJ cannot hold position, so you should look to the SAIL or BSAI locking cylinder series instead.
Quick checklist
The 150 mm nominal stroke can be adjusted back by up to 75 mm, providing a usable travel window of 75 to 150 mm.
No, the rear adjuster is a travel stop, not a lock. The cylinder requires live air pressure to hold position. For fail-safe load holding, consider the SAIL or BSAI locking cylinder series.
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