
The AirTAC Airtac SAIJ50 Adjustable Cylinder SAIJ50BX700-100 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø50mm bore and 700mm 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 SAIJ50X700-100 is a double-acting ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It provides a 600-700 mm usable travel window, allowing you to trim the effective stroke by up to 100 mm during commissioning without swapping the cylinder. Delivering 982 N of push force at 0.5 MPa, it handles mid-range automation tasks with precision.
This model features a SUS304 stainless steel rod for superior corrosion resistance and uses PT tapered port threads. The extruded aluminum barrel includes sensor grooves on both sides. Note that the rear adjuster acts strictly as a travel stop for end-position tuning, not as a load-holding lock.
| Model | Airtac SAIJ50 Adjustable Cylinder SAIJ50BX700-100 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø50 mm |
| Stroke | 700 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. |
| ×700 | 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 600-700 mm travel window during format changes on packaging lines, avoiding the need to physically swap out long-stroke cylinders.
Set precise retraction limits for diverter arms on conveyors where multiple package sizes require different end positions from the same actuator.
Fine-tune the rear stopper during initial commissioning to perfectly align tooling hits, absorbing mechanical tolerances over a 100 mm range.
Choose this 50 mm bore when an application requires approximately 982 N of push force at 0.5 MPa, stepping up from a 40 mm bore that provides 628 N. The 100 mm adjustment window is ideal for product changeovers on a line, allowing variable end-stops without adding external stops. For fixed travel without the adjuster, a standard SAI cylinder is sufficient.
Because the 700 mm stroke is substantial, an external guide is recommended to prevent excessive side-loading on the SUS304 rod. This cylinder uses PT tapered ports and supports Basic, FA, LB, TC, FTC, TCM1, and TCM2 mounts. If the load must be held without live air pressure, use a SAIL or BSAI cylinder instead, as the SAIJ adjuster is only a stop.
Quick checklist
The rear adjuster screw allows you to shorten the nominal 700 mm stroke by up to 100 mm, creating a 600-700 mm usable travel window. It acts as a mechanical stop to fine-tune the end position without altering the cylinder itself.
At 0.5 MPa operating pressure, it provides 982 N of push force and 825 N of pull force. At 0.7 MPa, the push force increases to 1374 N.
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