
The AirTAC Adjustable Cylinder SAIJ32 SAIJ32BX25-20S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø32mm bore and 25mm 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 SAIJ32X25-20-S is a double-acting, double-rod ISO 15552 profile cylinder featuring a rear stroke adjuster. It provides a 5-25 mm usable travel window, allowing you to dial back the 25 mm nominal stroke by up to 20 mm during commissioning. The extruded aluminum barrel includes sensor grooves on both sides for flexible mounting.
This variant uses a SUS304 stainless steel rod (code B) for corrosion resistance and includes a magnet for CMSE reed and DMSE electronic sensors. It features PT tapered ports and adjustable air cushions at both ends. Remember, the rear adjuster acts as a travel stop, not a lock; it cannot hold a load without live air pressure.
| Model | Airtac Adjustable Cylinder SAIJ32 SAIJ32BX25-20S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø32 mm |
| Stroke | 25 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. |
| ×25 | 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 5 to 25 mm travel window during machine commissioning to accommodate varying product sizes without adding external mechanical stops.
Quickly modify the retract end-position on packaging lines when switching between different product lengths, minimizing downtime.
Choose this 32 mm bore when a compact, light-force actuator is needed and 402 N at 0.5 MPa is sufficient. The adjustable stroke is perfect for setups requiring exact end-position tuning without swapping cylinders. If your application needs more force, stepping up to the 40 mm bore yields 628 N. For load-holding without continuous air pressure, select a SAIL or BSAI cylinder instead. To match this ISO 15552 replacement exactly, specify bore 32, stroke 25, 20 mm adjustment, PT port, and the -S magnet.
Because the 25 mm stroke is short, side-loading is minimal, but the 12 mm rod and M10x1.25 thread still require a guide for lateral loads. The SAIJ mounting set includes Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting FB, CA, CB, and CR.
Quick checklist
The rear adjuster screw lets you shorten the 25 mm nominal stroke by up to 20 mm, creating a 5 to 25 mm usable travel window. It acts as a mechanical stop to fine-tune the end position without changing the cylinder.
At the maximum 1.0 MPa pressure, it delivers up to 82 kgf.
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