
The AirTAC SAIJ80 Adjustable Cylinder SAIJ80BX290-100 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 290mm 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.
It features a SUS304 stainless steel rod for superior corrosion resistance and utilizes PT tapered ports. An external adjusting screw at the rear allows you to dial back the 290mm nominal stroke, creating a precise 190-290mm usable travel window for on-the-fly positioning.
Because the adjuster acts purely as a mechanical stop to set the retract end position, it does not lock the load without continuous live air pressure. The extruded aluminum barrel includes dual sensor grooves for CMSE or DMSE switches, though this specific SKU is configured without a magnet. Mounting options include Basic, FA, LB, TC, FTC, TCM1, and TCM2, deliberately omitting FB, CA, CB, and CR configurations.
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80BX290-100 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 290 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. |
| ×290 | 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 190-290mm travel window on a packaging conveyor to accommodate different carton sizes without physically relocating the cylinder mount.
Quickly reconfigure the retract end-stop during production line format changes, using the rear adjuster to hit precise intermediate positions.
The 100mm adjustment range is ideal for product-size changeovers on a packaging line, allowing operators to fine-tune the end stop without swapping cylinders or adding external stops. For fixed-position tasks requiring no end-tuning, a standard SAI cylinder is sufficient. If your process demands true load-holding without live air pressure, consider the SAIL or BSAI series instead.
When replacing an ISO 15552 cylinder, match the 80mm bore, 290mm stroke, 100mm adjustment, PT port thread, and SUS304 rod material. Given the 290mm stroke, ensure adequate external guiding to prevent excessive side-loading on the rod, even with the sturdy M20x1.5 rod thread.
Quick checklist
At 0.7 MPa, the push force increases to 3518N.
The rear adjusting screw acts as a mechanical stop, allowing you to shorten the effective travel from its 290mm nominal stroke down to 190mm. It only sets the end position and does not hold the load without live air.
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