
The AirTAC SAIJ100 Adjustable Cylinder SAIJ100AX325-75S 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 SAIJ100X325-75-S is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster. This allows you to dial in the exact end position during commissioning without adding external stops. It includes a magnetic piston for CMSE reed and DMSE electronic sensors.
This unit is built with a SUS420J2 stainless steel rod (option A) for superior corrosion resistance and uses PT tapered port threads. The extruded aluminum barrel includes sensor grooves on both sides. Remember the rear adjuster acts only as a travel stop, not a load lock, so maintain live air to hold position.
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100AX325-75S |
|---|---|
| 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 250-325mm travel window on the fly to accommodate different material thicknesses during pressing and forming tasks.
Quickly reposition the rear stopper to handle varying package sizes on a packaging line without swapping out the cylinder.
Fine-tune the end-of-stroke position during initial commissioning to perfectly time machine sequencing without external hard stops.
The adjustable 250-325mm window is ideal for product changeovers where end-stops frequently shift. For fixed requirements, a standard SAI cylinder suffices. To match this exact configuration, specify bore 100, stroke 325, 75mm adjustment, PT ports, SUS420J2 rod, and a -S magnet.
Because the 325mm stroke is substantial, the 25mm rod diameter needs external guidance to prevent side-load wear on the seals. The SAIJ mounting set includes Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting FB, CA, CB, and CR. If you need true load-holding without air pressure, select a SAIL or BSAI cylinder instead of relying on the adjuster.
Quick checklist
The rear adjuster stopper lets you trim the effective travel anywhere within a 250 to 325 mm window, functioning as a stop rather than a load lock.
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