
The AirTAC SAIJ80 Adjustable Cylinder SAIJ80BX375-30 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 375mm 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 SAIJ80X375-30 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that allows you to fine-tune the end position. With a nominal stroke of 375 mm and a 30 mm adjustment range, it provides a usable travel window of 345 to 375 mm.
This specific configuration includes a SUS304 stainless steel rod for enhanced corrosion resistance and uses PT tapered port threads. The extruded aluminum barrel incorporates sensor grooves on both sides. Because the stroke is 375 mm, an external guide is recommended to prevent excessive side-loading on the rod.
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80BX375-30 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 375 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. |
| ×375 | 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 end position during product size changes on a packaging line using the 30 mm rear adjuster, avoiding physical cylinder swaps.
Set precise retract distances for diverter arms without installing external stopper blocks, keeping the ISO 15552 footprint clean.
The adjustable stroke is ideal for machine setup and product changeover, allowing you to dial in the exact end-stop without swapping out the cylinder or adding external mechanical stops. It supports a speed range of 30-800 mm/s.
When matching this for an ISO 15552 replacement, verify the 375 mm stroke, 30 mm adjustment, PT port threads, and the lack of a magnet. Note that the rear adjuster acts only as a travel stop and does not hold the load without live air pressure; for true load-holding without air, consider the SAIL or BSAI series. The SAIJ mounting set includes Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting FB, CA, CB, and CR.
Quick checklist
It can deliver up to 4523 N at 0.9 MPa.
The rear adjuster screw lets you shorten the effective travel from the nominal 375 mm down to 345 mm, creating a 345-375 mm usable window. It acts as a mechanical stop to decelerate the load and set the end position, but it is not a lock and will not hold the load without live air pressure.
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