
The AirTAC SAIJ80 Adjustable Cylinder SAIJ80AX950-75S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 950mm 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 SAIJ80X950-75-S is a double-acting, double-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. By turning the external rear stopper screw, you can fine-tune the effective travel anywhere within an 875-950mm window, providing precise end-position calibration without adding bulky external stops.
This specific SKU includes a SUS420J2 stainless steel rod (option A) for improved corrosion resistance and comes factory-fitted with a magnet (-S) for seamless compatibility with AirTAC CMSE reed and DMSE electronic solid-state sensors. The extruded aluminum barrel incorporates sensor grooves on both sides, and the cylinder relies on variable air cushions at both ends to decelerate the load over its 950mm run.
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80AX950-75S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 950 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. |
| ×950 | 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.
Dial in the exact 875-950mm feed length on a machining station during product changeover without swapping cylinders.
Fine-tune the retract distance of a conveyor sorting gate to accommodate varying package sizes on the fly.
Use the 75mm rear adjustment window to perfectly phase the end-of-stroke position with machine sensors during initial setup.
The adjustable 875-950mm travel window is ideal for machine setups requiring exact end-position tuning during commissioning or product changeover, replacing the need to swap out a fixed-stroke SAI cylinder.
Because the nominal stroke is 950mm, an external guide is strongly recommended to prevent excessive side-loading on the extended rod. Remember that the rear adjuster functions strictly as a travel stop and the air cushions only manage deceleration; neither will hold a load without continuous air pressure. For load-holding requirements, consider the SAIL or BSAI series. This model uses a PT tapered port thread and is dimensionally interchangeable per ISO 15552.
Quick checklist
At the maximum 1.0 MPa pressure, it delivers up to 513 kgf.
The rear adjuster screw acts as a mechanical stop, allowing you to shorten the effective stroke from 950mm down to as little as 875mm. This allows precise end-position tuning during commissioning without changing the cylinder.
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