
The AirTAC SAIJ80 Adjustable Cylinder SAIJ80BX260-50S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 260mm 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.
It features a SUS304 stainless steel rod and a PT tapered port thread. The integrated magnet (-S) supports electronic DMSE and reed CMSE sensors housed within the dual-side extruded aluminum barrel grooves.
With a 260mm nominal stroke and a 50mm adjustment range, this unit provides a usable travel window of 210-260mm. You can fine-tune the retract end-position at commissioning without external stops. The rear adjuster acts purely as a travel stop for deceleration alongside the variable air cushions, not as a load lock.
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80BX260-50S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 260 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. |
| ×260 | 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 210-260mm travel window during format changes on a packaging line, using the rear stopper to set precise retract distances without mechanical rebuilds.
Sort or push items of varying sizes on a conveyor by adjusting the stroke up to 50mm to accommodate different package depths on the fly.
Fine-tune the final end position during initial commissioning to perfect alignment, relying on the 25mm SUS304 rod to handle high side-load stresses.
The 50mm adjustment window is ideal for product changeovers on a packaging line, allowing you to dial in the exact 210-260mm travel without swapping the cylinder. For fixed-position tasks, a standard SAI cylinder suffices.
When replacing an ISO 15552 cylinder, match the 80mm bore, 260mm stroke, G3/8 PT ports, and the -S magnet. Mounting options include Basic, FA, LB, TC, FTC, TCM1, and TCM2. Because the 260mm stroke is relatively long, the 25mm rod should be paired with an external guide to prevent excessive side-loading. For load-holding without live air, select a SAIL or BSAI cylinder instead.
Quick checklist
The rear adjuster allows you to shorten the 260mm nominal stroke by up to 50mm, creating a 210-260mm usable travel window. It functions as a mechanical stop to set the end position and does not hold the load without continuous air pressure.
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