
The AirTAC SAIJ100 Adjustable Cylinder SAIJ100AX210-20 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø100mm bore and 210mm 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 SAIJ100X210-20 is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, allowing you to dial back the 210 mm nominal travel by up to 20 mm. This creates a precise 190-210 mm usable window, giving you the freedom to fine-tune end positions at commissioning without adding external stops. It delivers substantial thrust, pushing 5497 N at 0.7 MPa, making it well-suited for heavy-duty positioning tasks.
This SKU features a SUS420J2 stainless steel rod (option A) for improved corrosion resistance and carries a G1/2 PT tapered port. The extruded aluminum barrel includes sensor grooves on both sides for flexible mounting of CMSE reed or DMSE electronic switches. Remember that the rear adjuster acts purely as a travel stop and does not hold the load without live air pressure.
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100AX210-20 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø100 mm |
| Stroke | 210 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. |
| ×210 | 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 190-210 mm travel window during format size changes on a packaging line, avoiding the need to physically swap out the entire cylinder.
Fine-tune the retract end-position during initial commissioning to perfectly align tooling, saving time over machining custom external stop blocks.
The adjustable stroke is ideal for product-size changeovers on a line, letting you shift the end-stop by up to 20 mm in place rather than swapping to a fixed-stroke SAI cylinder. Because the nominal stroke is 210 mm, an external guide is recommended to manage side loads on the 25 mm rod.
For a direct ISO 15552 replacement, match the 100 mm bore, 210 mm stroke, 20 mm adjustment, G1/2 PT port, and your required mounting choice from the SAIJ subset: Basic, FA, LB, TC, FTC, TCM1, or TCM2. If your application requires holding a load without continuous air pressure, this cylinder is not suitable; instead, look to the SAIL or BSAI locking variants.
Quick checklist
At 0.5 MPa, the push force is 3927 N.
The rear adjuster screw acts as a mechanical stop, allowing you to shorten the 210 mm nominal stroke by up to 20 mm, resulting in a 190-210 mm usable travel window. It sets the end position but does not lock the load without live air.
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