
The AirTAC SAIJ80 Adjustable Cylinder SAIJ80AX280-10 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 280mm 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 25mm carbon steel rod and a PT G3/8 port. By integrating a rear stopper screw, this actuator provides a usable travel window of 270-280mm, enabling precise end-position tuning during commissioning without swapping out the entire unit.
This model utilizes an extruded aluminum barrel with dual sensor grooves, accepting CMSE reed or DMSE electronic switches if a magnet is added later. The rod is constructed from SUS420J2 stainless steel (material code A) for enhanced durability against moisture. It supports a speed range of 30-800mm/s and relies on adjustable air cushions at both ends to decelerate the load smoothly.
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80AX280-10 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 280 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. |
| ×280 | 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 270-280mm travel window during product size changes to set new end positions rapidly without adding external physical stops.
Uses the rear stopper to set a hard mechanical limit for pressing operations, while the SUS420J2 stainless rod resists minor environmental moisture.
Choose this 80mm bore actuator when an application requires moderate thrust and on-the-fly stroke trimming; if you need less force, the 63mm bore provides 1559N at 0.5 MPa, while stepping up to 100mm yields 3927N. The 10mm adjustment range is ideal for dialing in a final end-stop during product changeovers rather than relying on a fixed-stroke SAI cylinder. To match your exact ISO 15552 replacement requirements, confirm the 280mm stroke, 10mm adjuster, PT G3/8 port, and preferred mounting bracket (Basic, FA, LB, TC, FTC, TCM1, or TCM2).
Because the nominal stroke is 280mm, ensure adequate external guiding to support the load and prevent excessive side-loading on the rod. Remember that the rear adjuster and air cushions act only as travel stops and deceleration devices; they do not hold the load without live air pressure. For true load-holding, consider an external rod lock or the AirTAC SAIL series.
Quick checklist
At 0.7 MPa, the push force increases to 3518N.
The rear adjuster screw allows you to shorten the effective travel from the nominal 280mm down to 270mm, creating a 270-280mm usable window. This stopper fine-tunes the end position but does not lock the load without continuous air pressure.
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