
The AirTAC SAIJ100 Adjustable Cylinder SAIJ100AX325-100 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø100mm bore and 325mm 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 SAIJ100X325-100 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster.
This model uses a SUS420J2 stainless steel rod (code A) for corrosion resistance and features PT tapered port threads. The rear adjuster acts purely as a mechanical stop for end-position tuning; it does not hold the load without live air pressure, so an external rod lock or SAIL cylinder is required for position holding.
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100AX325-100 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø100 mm |
| Stroke | 325 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. |
| ×325 | 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 225-325mm travel window on packaging lines to handle different carton sizes without swapping cylinders or adding external mechanical stops.
Fine-tune the retract end-position during machine commissioning to absorb mechanical tolerances and achieve precise pressing or clamping depth.
Accommodate varying material heights in automated forming stations by adjusting the stroke back from 325mm to precisely 225mm on the fly.
The 100mm adjustment range is ideal for machinery requiring frequent product-size changeovers, replacing fixed-stroke SAI cylinders to eliminate external stop hardware.
Because the 325mm stroke is substantial, the 25mm diameter rod and M20x1.5 thread handle high side loads, though an external guide is still recommended for unsupported loads. For ISO 15552 replacement matching, verify the 325mm stroke, 100mm adjustment, G3/8 port, and mounting set (Basic, FA, LB, TC, FTC, TCM1, TCM2; no FB/CA/CB/CR).
Quick checklist
The rear adjuster screw acts as a mechanical stop, allowing you to shorten the effective travel from the 325mm nominal stroke down to a minimum of 225mm. This creates a 100mm adjustable window for fine-tuning end positions without changing the cylinder.
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