
The AirTAC SAIJ100 Adjustable Cylinder SAIJ100AX35-20 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø100mm bore and 35mm 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 SAIJ100X35-20 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that allows you to fine-tune the travel window from 15 to 35 mm without adding external stops. The extruded aluminum barrel includes sensor grooves on both sides for flexible switch placement.
This adjustable-stroke model uses a reduced mounting set (Basic, FA, LB, TC, FTC, TCM1, TCM2), omitting the FB, CA, CB, and CR brackets found on some standard cylinders. The rear adjuster acts purely as a mechanical stop to set the retract end position; it does not lock the load, meaning live air is required to hold position. For load-holding without pressure, consider the SAIL or BSAI series.
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100AX35-20 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø100 mm |
| Stroke | 35 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. |
| ×35 | 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 15-35 mm pressing distance for light assembly operations, ensuring precise contact force without replacing the cylinder.
Quickly adjust the retract end-stop during product size transitions on a packaging line, saving setup time by using the built-in 20 mm adjuster.
Fine-tune end-of-stroke positions during machine commissioning to compensate for mechanical tolerances, avoiding the need for custom shims.
The integrated 20 mm adjuster is ideal for product changeovers, letting you dial in the exact end position during commissioning rather than machining custom spacers.
To match this exact configuration for an ISO 15552 interchange, specify a 100 mm bore, 35 mm nominal stroke, 20 mm adjustment range, PT G1/2 port thread, and SUS420J2 (code A) stainless steel rod material. Because the nominal stroke is under 300 mm, side-load stress on the 25 mm rod is minimal, but an external guide remains recommended for heavy lateral loads.
Quick checklist
At the maximum 1.0 MPa pressure, it can deliver up to 801 kgf of push force.
The rear adjusting screw acts as a mechanical stop that lets you trim the effective travel back by up to 20 mm. This creates a usable 15 to 35 mm stroke window, allowing precise end-position tuning without swapping the cylinder or adding external stops.
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