
The AirTAC SAIJ80 Adjustable Cylinder SAIJ80AX225-40S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 225mm stroke, G3/8 air ports and adjustable end cushioning. Its standardized mounting interface makes it interchangeable with other ISO 15552 cylinders at the mounting interface.
The AirTAC SAIJ80X225-40-S is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that allows you to fine-tune the effective travel anywhere between 185 and 225 mm.
This variant features a SUS420J2 stainless steel rod for superior corrosion resistance and includes a magnet for CMSE reed and DMSE electronic sensors. The extruded aluminum barrel integrates sensor grooves on both sides, and the PT G3/8 tapered ports ensure a tight pneumatic connection for high-speed 30-800 mm/s operations.
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80AX225-40S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 225 mm |
| Acting type | Double acting |
| Port size | G3/8 |
| Rod thread | M20×1.5 |
| 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, 36 mm |
| Max stroke | Up to 1500 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 | 2268 N | 2268 N |
| 0.7 MPa | 3175 N | — |
| Max (@1.0 MPa) | 463 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. |
|---|---|
| 80 | Bore size in mm. |
| ×225 | 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 retract distance between 185 and 225 mm during machine setup to accommodate varying material thicknesses without mechanical rebuilds.
Quickly reconfigure the stroke length on packaging lines when switching between different carton sizes, minimizing downtime and maximizing throughput.
Trim the travel back by up to 40 mm to perfectly align the tooling endpoint, compensating for mechanical tolerances without swapping cylinders.
The 40mm adjustment range is perfect for applications needing a variable end-stop for product changeovers, saving you from swapping out a fixed-stroke SAI cylinder or adding bulky external stops.
Remember that the rear adjuster acts only as a travel stop and does not hold the load without live air pressure; for fail-safe load holding, consider an SAIL or BSAI cylinder. Because the usable stroke is 225mm, you should guide the load externally to prevent excessive side loads on the M20x1.5 rod thread. This cylinder is dimensionally interchangeable per ISO 15552 mounting interfaces, supporting Basic, FA, LB, TC, FTC, TCM1, and TCM2 mounts.
Quick checklist
At a 0.7MPa operating pressure, this 80mm bore cylinder provides a push thrust of 3518N and a pull thrust of 2268N.
A rear adjusting screw acts as a mechanical stop, allowing you to shorten the nominal 225mm stroke by up to 40mm. This creates a usable travel window of 185-225mm, which is set at commissioning and does not lock the load without live air pressure.
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