
The AirTAC SAIJ100 Adjustable Cylinder SAIJ100AX55-30S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø100mm bore and 55mm 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 SAIJ100X55-30-S is a double-acting, double-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster.
This variant features a SUS420J2 stainless steel rod (code A) for enhanced corrosion resistance and includes a magnet (-S) for CMSE reed or DMSE electronic sensors. The extruded aluminum barrel provides sensor grooves on both sides, and the G1/2 port handles the air volume needed for its 30-800mm/s speed range.
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100AX55-30S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø100 mm |
| Stroke | 55 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. |
| ×55 | 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.
Fine-tune the end-of-stroke position within the 25-55mm window during initial machine commissioning to achieve perfect pressing depth without external shims.
Quickly adjust the cylinder travel by up to 30mm when switching the line to run a different product size, minimizing downtime between batches.
The adjustable 25-55mm window is ideal for product changeovers on a line, letting you dial in the exact end position rather than machining external stops or buying a fixed-stroke SAI cylinder.
For dimensionally interchangeable ISO 15552 replacements, match the 100mm bore, 55mm stroke, 30mm adjustment, PT tapered port threads, and the -S magnet. Remember that the rear adjuster is a travel stop, not a lock; it cannot hold a load without live air. For dead-pilot holding, use a SAIL or BSAI cylinder.
Quick checklist
The rear adjuster acts as a mechanical stop that lets you shorten the 55mm nominal stroke by up to 30mm, creating a 25-55mm usable travel window. It only sets the end position and does not lock the load without continuous air pressure.
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