
The AirTAC SAIJ80 Adjustable Cylinder SAIJ80BX275-10S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 275mm 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 SAIJ80X275-10-S is a double-acting, double-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. This variant includes a SUS304 stainless steel rod for superior corrosion resistance and a built-in magnet for position sensing.
It uses a PT tapered G3/8 port and operates at speeds of 30-800mm/s. The extruded aluminum barrel includes sensor grooves on both sides, directly supporting AirTAC CMSE reed and DMSE electronic solid-state switches. Mounting options include Basic, FA, LB, TC, FTC, TCM1, and TCM2, deliberately omitting FB, CA, CB, and CR configurations.
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80BX275-10S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 275 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. |
| ×275 | 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 265 to 275mm end position during product size changeovers without swapping out the entire actuator.
Fine-tune the retract stroke limit at machine commissioning to prevent mechanical interference and optimize tooling alignment.
The 10mm rear adjuster acts purely as a travel stop to fine-tune the retract end position; it does not lock or hold the load without continuous live air pressure. For load-holding requirements, consider an AirTAC SAIL or BSAI cylinder, or use an external pilot-operated check valve.
To replace an ISO 15552 cylinder, match the 80mm bore, 275mm stroke, 10mm adjustment range, PT G3/8 port, and the -S magnet requirement. Because the 275mm stroke is relatively long, the 25mm rod and M20x1.5 rod thread provide rigidity, but an external guide is still recommended to prevent excessive side-loading on the piston.
Quick checklist
At 0.7 MPa, the push force increases to 3518N.
The rear adjuster allows you to shorten the 275mm nominal stroke by up to 10mm, creating a 265-275mm travel window. It functions as a physical stop and does not lock the load without air pressure.
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