
The AirTAC Adjustable Cylinder SAIJ32 SAIJ32BX125-20 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø32mm bore and 125mm 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 SAIJ32X125-20 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 20 mm, creating a usable 105-125 mm window for precise end-position tuning at commissioning. The extruded aluminum barrel includes sensor grooves on both sides for flexible mounting of CMSE reed or DMSE electronic switches.
This model features a PT tapered G1/8 port and achieves a standard speed range of 30-800 mm/s. The rear adjuster acts purely as a mechanical stop to set the retract position and does not lock the load without live air pressure. It supports a reduced mounting subset of Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting the FB, CA, CB, and CR options available on fixed-stroke variants.
| Model | Airtac Adjustable Cylinder SAIJ32 SAIJ32BX125-20 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø32 mm |
| Stroke | 125 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. |
| ×125 | 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 105-125 mm retract position during product size changes without swapping out the cylinder or re-engineering the fixture.
Fine-tune the final retract position during commissioning to perfect a pressing or clamping operation within a 20 mm window.
Adjust the travel limit on a pneumatic diverter gate to handle varying package sizes on a single conveyor line.
If your setup needs higher thrust, stepping up to the 40 mm bore yields 628 N, while the adjustable 105-125 mm travel window here is perfect for accommodating minor product size changes on a single machine. Remember that the rear adjuster only decelerates the travel end; for true load-holding without live air, consider the SAIL or BSAI series.
When replacing an ISO 15552 cylinder, match the 32 mm bore, 125 mm stroke, 20 mm adjustment, PT G1/8 port, and your required mounting style. Because the stroke is under 300 mm, side-load stress on the 12 mm rod is minimal, though long unsupported loads should still use an external guide.
Quick checklist
A rear adjusting screw acts as a mechanical stopper, allowing you to shorten the 125 mm nominal stroke by up to 20 mm. This creates a usable travel window of 105-125 mm, which can be fine-tuned during commissioning without adding external stops.
At the maximum 1.0 MPa pressure, it can deliver up to 82 kgf.
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