
The AirTAC SAIJ100 Adjustable Cylinder SAIJ100AX450-75S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø100mm bore and 450mm 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 SAIJ100X450-75-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, allowing you to fine-tune the end position during commissioning without external stops. It provides a usable travel window of 375 to 450 mm, giving you 75 mm of flexibility to dial in the exact retract distance.
This unit features a SUS420J2 stainless steel rod for enhanced corrosion resistance and includes a magnet for position sensing with AirTAC CMSE reed or DMSE electronic switches. The extruded aluminum barrel includes sensor grooves on both sides, and the PT tapered ports ensure a tight, leak-free pneumatic connection.
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100AX450-75S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø100 mm |
| Stroke | 450 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. |
| ×450 | 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.
Quickly dial in the retract distance by up to 75 mm during production line changeovers to accommodate different product lengths without replacing the cylinder.
Set exact travel limits during machine setup using the rear stopper screw, ensuring accurate positioning across varying assembly dimensions.
The adjustable stroke is ideal for machine changeovers where product sizes vary, letting you set a new end-stop without swapping the cylinder. Because the stroke is 450 mm, an external guide is recommended to prevent excessive side-loading on the rod.
When matching your ISO 15552 replacement, verify the 100 mm bore, 450 mm nominal stroke, 75 mm adjustment range, PT G1/2 ports, and the -S magnet option. Remember that the rear adjuster acts as a travel stop, not a lock; if you need to hold a load vertically without live air, select an AirTAC SAIL or BSAI locking cylinder instead.
Quick checklist
The rear adjuster screw lets you shorten the effective stroke by up to 75 mm, providing a usable travel window of 375 to 450 mm. This allows you to fine-tune the end position without adding external stops or changing the cylinder.
At 0.9 MPa, the push force increases to 7068 N.
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