
The AirTAC Adjustable Cylinder SAIJ32 SAIJ32BX120-75 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø32mm bore and 120mm stroke, G1/8 air ports and adjustable end cushioning. Its standardized mounting interface makes it interchangeable with other ISO 15552 cylinders at the mounting interface.
The AirTAC SAIJ32X120-75 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that allows you to trim the effective travel back by up to 75 mm. This creates a highly versatile 45-120 mm usable travel window, letting you dial in the exact end position during commissioning without swapping out the physical unit.
Built with a SUS304 stainless steel rod and PT tapered ports, this 32 mm bore model handles demanding environments where corrosion resistance and a tight seal are paramount. The extruded aluminum barrel includes sensor grooves on both sides, and while no magnet is specified here, adding one enables compatibility with CMSE reed and DMSE electronic sensors. The rear adjuster acts purely as a mechanical stop to set the retract end, meaning it will not hold the load dynamically without live air pressure.
| Model | Airtac Adjustable Cylinder SAIJ32 SAIJ32BX120-75 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø32 mm |
| Stroke | 120 mm |
| Acting type | Double acting |
| Port size | G1/8 |
| Rod thread | M10×1.25 |
| 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, 27 mm |
| Max stroke | Up to 1000 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 | 346 N | 346 N |
| 0.7 MPa | 484 N | — |
| Max (@1.0 MPa) | 70 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. |
|---|---|
| 32 | Bore size in mm. |
| ×120 | 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 adjust the 45-120 mm travel window during product size transitions on a packaging line without replacing the cylinder.
Fine-tune the retract stroke at commissioning to hit exact mechanical stops, compensating for fixture tolerances.
Choose this 75 mm adjustable variant when your machine setup requires significant end-position variance or frequent product changeovers that alter the required stroke length. Unlike a fixed-stroke SAI cylinder, this model lets you fine-tune the retract position externally rather than adding mechanical stops to your fixture.
Because the total stroke is 120 mm, side-loading risks are moderate, but you should still ensure proper guiding for any unsupported loads. For load-holding without continuous air pressure, note that the rear adjuster on this SAIJ is a travel stop and not a lock; you would need to look at an SAIL or BSAI series cylinder for true pneumatic locking. This cylinder is dimensionally interchangeable per ISO 15552 and uses a reduced mounting set including Basic, FA, LB, TC, FTC, TCM1, and TCM2.
Quick checklist
At 0.9 MPa, the push force increases to 724 N.
The rear adjuster acts as a mechanical stop that lets you shorten the nominal 120 mm stroke by up to 75 mm. This provides a usable travel window of 45 to 120 mm, which can be fine-tuned during setup, though it does not lock the load without live air.
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