
The AirTAC SAIJ100 Adjustable Cylinder SAIJ100BX550-75S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø100mm bore and 550mm stroke, G1/2 air ports and adjustable end cushioning. Its standardized mounting interface makes it interchangeable with other ISO 15552 cylinders at the mounting interface.
The AirTAC SAIJ100X550-75-S is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that creates a usable travel window of 475 to 550 mm. The extruded aluminum barrel includes sensor grooves on both sides for flexible switch mounting.
This model uses PT tapered ports (G1/2) and accepts AirTAC CMSE reed and DMSE electronic sensors. The rear adjustment screw allows precise end-position tuning at commissioning without swapping hardware. The adjuster functions strictly as a travel stop to set deceleration, not as a lock to hold the load without live air.
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100BX550-75S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø100 mm |
| Stroke | 550 mm |
| Acting type | Double acting |
| Port size | G1/2 |
| 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 | 3682 N | 3682 N |
| 0.7 MPa | 5154 N | — |
| Max (@1.0 MPa) | 751 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. |
|---|---|
| 100 | Bore size in mm. |
| ×550 | 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 exact end-stop during product size transitions without physically replacing the cylinder or repositioning hard stops.
Adjust the travel window from 475 to 550 mm to fine-tune where parts are pushed or gated on a moving line.
Trim the stroke precisely during setup to control engagement depth, preventing damage to components.
The 75 mm adjustment range is ideal for product changeovers on a line, allowing you to dial back the 550 mm stroke to a 475 mm minimum without adding external stops. For fixed travel needs without commissioning tweaks, a standard SAI cylinder is sufficient.
When specifying a replacement, match the 100 mm bore, 550 mm stroke, 75 mm adjustment, PT port, and -S magnet. Mounting options are limited to Basic, FA, LB, TC, FTC, TCM1, and TCM2. Because the stroke is 550 mm, an external guide is recommended to prevent excessive side-load on the 25 mm rod. For load-holding without live pressure, select a SAIL or BSAI cylinder instead.
Quick checklist
At 0.9 MPa, the push force increases to 7068 N.
The rear adjuster screw lets you shorten the 550 mm nominal stroke by up to 75 mm, creating a 475 to 550 mm travel window. It acts as a mechanical stop for end-position tuning and does not hold the load without air pressure.
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