
The AirTAC SAIJ80 Adjustable Cylinder SAIJ80BX40-10 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 40mm 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.
By integrating a SUS304 stainless steel rod, this configuration provides superior corrosion resistance for harsh industrial environments. It operates at speeds between 30 and 800 mm/s.
This model features a 40mm nominal stroke paired with a 10mm adjustment range, creating a precise 30-40mm usable travel window. This built-in adjustability allows you to fine-tune the retract end position during commissioning without adding external stops. The extruded aluminum barrel includes dual sensor grooves, and the mounting options cover Basic, FA, LB, TC, FTC, TCM1, and TCM2.
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80BX40-10 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 40 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. |
| ×40 | 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 30-40mm retract position during machine commissioning to perfect part seating without machining custom spacers.
Quickly adjust the stroke end by up to 10mm on packaging lines when switching between slightly different product sizes.
The adjustable 30-40mm travel window is ideal for short-stroke setups requiring exact end-position tuning rather than a fixed SAI cylinder. To match this ISO 15552 replacement exactly, specify the PT tapered port, SUS304 rod, and the required mounting hardware.
Because the stroke is under 300mm, side-load stress on the 25mm rod is minimal, though external guidance is still recommended for heavy lateral loads. Remember that the rear adjuster functions only as a travel stop; it cannot hold a load without continuous air pressure. For true pneumatic locking without live air, consider the SAIL or BSAI cylinder series.
Quick checklist
At 0.7 MPa, the push force increases to 3518N.
The rear adjuster screw acts as a mechanical stop, allowing you to trim the effective travel back from the 40mm nominal stroke down to 30mm. This creates a 30-40mm usable window for fine-tuning the end position without swapping the cylinder.
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