
The AirTAC Adjustable Cylinder SAIJ32 SAIJ32BX550-100S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø32mm bore and 550mm 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 SAIJ32X550-100-S 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 100 mm, creating a highly versatile 450-550 mm usable window.
Because this 32 mm bore cylinder uses an extruded aluminum barrel rather than a tie-rod design, it provides standard sensor grooves on both sides. The rear adjuster functions strictly as a travel stop to dial in the end position during commissioning without adding external stops; it does not hold the load without live air pressure.
| Model | Airtac Adjustable Cylinder SAIJ32 SAIJ32BX550-100S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø32 mm |
| Stroke | 550 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. |
| ×550 | 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 450-550 mm travel window during line changeovers to accommodate different product lengths without physically swapping the cylinder.
Fine-tune the exact retract position at commissioning using the rear adjuster, eliminating the need to machine custom external spacers.
Adjust the stroke on the fly for diverting different package sizes on a conveyor line, ensuring precise physical contact without reprogramming.
Choose this adjustable model over a fixed SAI when your machine setup requires variable end-stops or product changeovers, allowing you to fine-tune the 550 mm stroke on the fly. Conversely, if you need less force, the 32 mm bore is the smallest standard ISO 15552 option available.
When replacing an ISO 15552 cylinder, match the 32 mm bore, 550 mm stroke, 100 mm adjustment range, PT tapered port thread, and the -S magnet requirement. Because the stroke is 550 mm, the 12 mm rod is highly susceptible to side-loading; always use an external guide to prevent binding and premature seal wear. For load-holding without live pressure, consider the SAIL or BSAI series, as the SAIJ adjuster is only a stop.
Quick checklist
At the maximum 1.0 MPa pressure, it can deliver up to 82 kgf.
The rear adjuster acts as a mechanical stop that lets you shorten the 550 mm nominal stroke by up to 100 mm, providing a usable travel window of 450-550 mm. It functions as a travel stop, not a lock, and cannot hold the load without continuous air pressure.
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