
The AirTAC Adjustable Cylinder SAIJ32 SAIJ32AX270-20 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø32mm bore and 270mm 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 SAIJ32X270-20 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that creates a 250-270mm usable travel window. The extruded aluminum barrel includes sensor grooves on both sides, and this specific configuration uses a SUS420J2 stainless steel rod for improved corrosion resistance.
Instead of swapping components during product changeovers, the rear stopper screw lets you dial in the retract end position precisely. The PT tapered port provides a tight pneumatic seal, and the cylinder operates at speeds of 30-800 mm/s. It is a true profile cylinder, dimensionally interchangeable per ISO 15552 standards without relying on tie-rod construction.
| Model | Airtac Adjustable Cylinder SAIJ32 SAIJ32AX270-20 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø32 mm |
| Stroke | 270 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. |
| ×270 | 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.
Fine-tune the 250-270mm retract position on the fly to accommodate different product lengths without changing the cylinder.
Dial in the exact end-stop during commissioning to perfect the mechanical timing of your assembly process.
Adjust the stroke window dynamically for sorting or diverting operations that require flexible positioning.
The adjustable stroke is selected over a fixed SAI when you need variable end-stops for machine setup or product-size changes. Remember that the rear adjuster is a travel stop, not a lock—the cylinder cannot hold a load without live air. For load-holding without pressure, consider an external rod lock or the SAIL series.
To replace an ISO 15552 cylinder, match the 32mm bore, 270mm stroke, 20mm adjustment, PT G1/8 port, and your required mounting style. SAIJ supports Basic, FA, LB, TC, FTC, TCM1, and TCM2 mounts, omitting FB, CA, CB, and CR. Because the 270mm stroke is relatively long for this compact bore, ensure adequate external guidance to prevent excessive rod side-loading.
Quick checklist
The rear adjuster acts as a mechanical stop, allowing you to shorten the effective stroke from 270mm down to 250mm. It sets the travel end but does not lock the load without live air pressure.
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