
The AirTAC SAIJ80 Adjustable Cylinder SAIJ80AX70-10 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 70mm 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.
Its 70mm nominal stroke can be dialed back by up to 10mm, creating a precise 60-70mm usable travel window for fine end-position tuning at commissioning. This eliminates the need to swap cylinders or bolt on external stops during machine setup.
Built with an SUS420J2 stainless steel rod, this 80mm bore unit handles demanding environments and carries side loads well thanks to its M20x1.5 rod thread. It features PT tapered port threads (G3/8) and variable air cushions at both ends. The rear adjuster acts strictly as a travel stop for deceleration, meaning it will not hold a load without live air pressure.
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80AX70-10 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 70 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. |
| ×70 | 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 60-70mm travel distance during machine commissioning to perfect part seating without adding external mechanical stops.
Quickly adjust the rear screw by up to 10mm to accommodate slightly different product lengths on the same production line.
The 10mm adjustment range is ideal for dialing in exact endpoints during product changeovers rather than relying on a fixed-stroke SAI cylinder.
For ISO 15552 replacement matching, specify the 80mm bore, 70mm stroke, 10mm adjustment, PT port thread, and your required mounting style. SAIJ supports a specific subset of mounts: Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting FB, CA, CB, and CR. Because it lacks a magnet, it does not support CMSE or DMSE sensors. Remember that for load-holding without live pressure, you must use a SAIL lock, BSAI clamp-lock, or external rod lock, as the adjuster here is only a stop.
Quick checklist
At 0.7 MPa, the push force increases to 3518N.
The rear adjuster screw allows you to shorten the 70mm nominal stroke by up to 10mm, providing a usable travel window of 60-70mm. This stopper fine-tunes the end position but does not lock the load without continuous air pressure.
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