
The AirTAC Adjustable Cylinder SAIJ32 SAIJ32BX550-50 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 SAIJ32X550-50 is a double-acting, double-rod ISO 15552 profile cylinder featuring a rear stroke adjuster. It provides a usable travel window of 500-550 mm, allowing you to dial back the 550 mm nominal stroke by up to 50 mm during commissioning. The extruded aluminum barrel includes sensor grooves on both sides for flexible switch mounting.
This variant uses a SUS304 stainless steel rod for corrosion resistance and a PT tapered port thread. The rear adjuster acts strictly as a mechanical stop to fine-tune the end position without swapping the cylinder, but it does not hold the load without live air pressure. The mounting interface covers Basic, FA, LB, TC, FTC, TCM1, and TCM2 options.
| Model | Airtac Adjustable Cylinder SAIJ32 SAIJ32BX550-50 |
|---|---|
| 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 exact 500 to 550 mm end position during commissioning without replacing the cylinder or adding external mechanical stops.
Quickly adapt the stroke length on automated lines handling varying product dimensions by adjusting the rear screw up to 50 mm.
The adjustable stroke is ideal for machine setups requiring variable end stops or product changeovers, avoiding the need for fixed-stroke SAI cylinders or external stopper blocks. Because the nominal stroke is 550 mm, the 12 mm rod demands an external guide to prevent excessive side-loading and buckling. For any load-holding requirements without continuous air pressure, select a SAIL or BSAI cylinder instead, as the SAIJ adjuster is not a lock.
Quick checklist
The rear adjuster screw acts as a mechanical stop, allowing you to shorten the effective stroke from 550 mm down to 500 mm. It sets the travel end but does not lock or hold the load without live air pressure.
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