
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80X170-50S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 170mm stroke, G3/8 air ports and adjustable end cushioning. Its standardized mounting interface makes it a drop-in replacement for other ISO 15552 cylinders in automation lines.
The AirTAC SAIJ80X170-50-S is a double-acting, single-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. It features a 170 mm nominal stroke that can be dialed back by up to 50 mm, providing an effective 120-170 mm usable travel window for precise end-position tuning at commissioning. Delivering 2513 N of push force at 0.5 MPa, it handles demanding positioning tasks.
This model includes a magnetic piston (-S) for position sensing via CMSE reed or DMSE electronic switches. It uses a PT tapered port and a robust 25 mm carbon steel rod with an M20x1.5 thread, providing high side-load resistance. The extruded aluminum barrel incorporates sensor grooves on both sides, and the mounting set includes Basic, FA, LB, TC, FTC, TCM1, and TCM2 options.
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80X170-50S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 170 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 | 2513 N | 2268 N |
| 0.7 MPa | 3519 N | — |
| Max (@1.0 MPa) | 513 kgf | |
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. |
| ×170 | 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 120-170 mm stroke window during format changes on packaging lines without swapping out the entire actuator.
Use the rear adjuster to precisely set the retraction end position during machine commissioning, avoiding costly mechanical shimming.
Adapt the travel distance on the fly for assembly stations processing parts of varying heights within the 50 mm adjustment range.
Select this 80 mm bore when an application requires substantial thrust, such as 2513 N push at 0.5 MPa, combined with variable end-stops for product changeovers. If your setup needs less force, stepping down to a 63 mm bore yields 1559 N push at 0.5 MPa. The rear adjusting screw acts purely as a travel stop to fine-tune the 120-170 mm window without adding external stops; it does not hold the load without live air. For load-holding requirements, consider an external rod lock or the AirTAC SAIL series.
Because the 170 mm stroke exceeds 300 mm? No, but even at 170 mm, ensure external guiding for heavy loads to prevent rod binding. To replace an ISO 15552 cylinder, match the 80 mm bore, 170 mm stroke, 50 mm adjustment, PT G3/8 port, and the -S magnet requirement.
Quick checklist
At 0.5 MPa operating pressure, this 80 mm bore cylinder provides 2513 N of push force and 2268 N of pull force. At 0.7 MPa, the push force increases to 3518 N.
The rear adjuster screw allows you to shorten the effective travel from the nominal 170 mm down to 120 mm. This stopper fine-tunes the retraction end position but does not lock the load without continuous air pressure.
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