
The AirTAC SAIJ80 Adjustable Cylinder SAIJ80BX135-10S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 135mm 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 SAIJ80X135-10-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster. It features an 80mm bore and a 135mm nominal stroke that can be fine-tuned down by up to 10mm, providing a usable travel window of 125 to 135mm.
This adjustable-stroke design allows you to dial in the exact end position during commissioning without adding external stops. The rear adjuster acts purely as a travel stop and works alongside the standard air cushions at both ends to decelerate the load. It includes a magnet for CMSE reed and DMSE electronic sensors, and uses the standard SAIJ mounting set (Basic, FA, LB, TC, FTC, TCM1, TCM2).
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80BX135-10S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 135 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. |
| ×135 | 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 125-135mm travel window during product size changeovers without swapping the cylinder or adding external shims.
Dial in the exact retract position at commissioning using the rear stopper, perfect for setting precise pressing depths.
If your force requirements are lower, stepping down to a 63mm bore provides 2805N at 0.9 MPa, while moving up to a 100mm bore yields 7068N. The 10mm adjustment range is ideal for precision machine setup and product changeovers where a fixed-stroke SAI cylinder would require shimming or mechanical rework.
Because the stroke is 135mm, side loads are moderate, but the 25mm rod and M20x1.5 thread handle standard loads well; always guide long unsupported travels externally. Remember that this plain SAIJ cylinder does not hold its load without live air—the rear adjuster is a stop, not a lock. For drop prevention, use a SAIL or BSAI cylinder. This model is dimensionally interchangeable per ISO 15552.
Quick checklist
The rear adjuster acts as a mechanical stop that lets you shorten the 135mm nominal stroke by up to 10mm, creating a 125-135mm usable travel window. It is a travel stop, not a lock, and does not hold the load without live air pressure.
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