The AirTAC Airtac SAIJ50 Adjustable Cylinder SAIJ50AX180-30 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø50mm bore and 180mm stroke, G1/4 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 SAIJ50X180-30 is a double-acting, single-rod ISO 15552 profile cylinder featuring a rear mechanical stroke adjuster. It provides a usable travel window of 150 to 180 mm, allowing you to dial back the nominal 180 mm stroke by up to 30 mm. This bore size delivers 982 N of push force and 825 N of pull force at 0.5 MPa, making it well-suited for medium-duty handling tasks.
The extruded aluminum barrel includes sensor grooves on both sides, though this specific configuration omits the internal magnet, meaning position sensing via CMSE or DMSE switches is not supported without a model change. The piston rod is constructed from SUS420J2 stainless steel (option A) for enhanced corrosion resistance, and the PT tapered port threads ensure a robust, sealed pneumatic connection.
| Model | Airtac SAIJ50 Adjustable Cylinder SAIJ50AX180-30 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø50 mm |
| Stroke | 180 mm |
| Acting type | Double acting |
| Port size | G1/4 |
| Rod thread | M16×1.5 |
| 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, 30 mm |
| Max stroke | Up to 1200 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 | 982 N | 825 N |
| 0.7 MPa | 1374 N | — |
| Max (@1.0 MPa) | 200 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. |
|---|---|
| 50 | Bore size in mm. |
| ×180 | 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 distance within the 150-180 mm window during machine commissioning to achieve exact positioning without external shims.
Quickly adapt automated machinery to varying product sizes by dialing the stroke stopper back by up to 30 mm during line setup.
Leverage the 982 N push force at 0.5 MPa for positioning medium-weight workpieces on an assembly line with repeatable accuracy.
Choose this 50 mm bore adjustable-stroke cylinder when your application requires precise end-position tuning at commissioning or during product changeover without the need to physically swap out components or add external stops. If your process demands less force, stepping down to a 40 mm bore yields 628 N of push force at 0.5 MPa; conversely, stepping up to a 63 mm bore provides 1559 N.
The rear adjuster acts solely as a travel stop to set the retract position and does not hold the load without live air pressure. For true fail-safe load holding, consider the SAIL or BSAI series instead. Because the 180 mm stroke is under the 300 mm threshold, side-load stress is minimal, but always ensure proper alignment. This model utilizes the standard SAIJ mounting subset (Basic, FA, LB, TC, FTC, TCM1, TCM2) and is dimensionally interchangeable per ISO 15552.
Quick checklist
At a 0.5 MPa operating pressure, this 50 mm bore cylinder provides 982 N of push force and 825 N of pull force. At the maximum 1.0 MPa pressure, it can deliver up to 200 kgf.
The rear adjuster screw allows you to mechanically shorten the effective travel from the 180 mm nominal stroke down to 150 mm. This creates a 150-180 mm usable window for fine-tuning the end stop without replacing the cylinder.
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