
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80X325-30S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 325mm stroke, G3/8 air ports and adjustable end cushioning. Its standardized mounting interface makes it a drop-in replacement for other ISO 15552 cylinders in automation lines.
The AirTAC SAIJ80X325-30-S is a double-acting, single-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. It delivers 2513N of push force at 0.5 MPa and features a 325mm nominal stroke that can be fine-tuned down by up to 30mm, creating a precise 295-325mm usable travel window. This built-in adjustability allows operators to dial in exact retract end positions during commissioning without swapping out the entire unit.
Fitted with a PT tapered port thread and a robust 25mm carbon steel rod with an M20x1.5 thread, this extruded aluminum barrel handles demanding cycles. The integrated -S magnet enables position detection via AirTAC CMSE reed or DMSE electronic solid-state sensors housed in the dual-side sensor grooves. Because the stroke exceeds 300mm, external guiding is recommended to manage side loads, and the rear stopper should never be mistaken for a lock, as it cannot hold a load without live air pressure.
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80X325-30S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 325 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 | 2513 N | 2268 N |
| 0.7 MPa | 3519 N | — |
| Max (@1.0 MPa) | 513 kgf | |
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. |
| ×325 | 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.
Quickly adjust the retract distance from 325mm down to 295mm during packaging line size changes without replacing hardware.
Fine-tune the exact end-stop position during initial commissioning to perfect material feeding and prevent mechanical crashes.
Accommodate multiple part lengths on a single conveyor system by rotating the rear adjuster screw to shift the stroke window.
Select this 80mm bore when an application requires substantial thrust, such as the 2513N push or 2268N pull at 0.5 MPa, but still needs on-the-fly end-position tuning. If your setup demands less force, stepping down to a 63mm bore yields 1559N push force, whereas moving up to a 100mm bore provides 3927N. The SAIJ series is chosen over a fixed-stroke SAI cylinder when product changeovers require variable end-stops, utilizing the rear screw to trim the 325mm stroke back to a 295mm minimum.
For a drop-in ISO 15552 replacement, match the 80mm bore, 325mm stroke, 30mm adjustment, PT port thread, and -S magnet. Mounting options are restricted to Basic, FA, LB, TC, FTC, TCM1, and TCM2, deliberately omitting FB, CA, CB, and CR brackets. Remember that the rear adjuster acts solely as a travel stop and deceleration point; for true load-holding without live air, utilize an external rod lock or explore the SAIL or BSAI cylinder variants.
Quick checklist
At 0.5 MPa operating pressure, this 80mm bore cylinder provides 2513N of push force and 2268N of pull force. At the maximum 1.0 MPa pressure, it achieves a peak push force of 4523N.
The rear adjusting screw acts as a mechanical stopper that lets you shorten the 325mm nominal stroke by up to 30mm, providing a usable travel window of 295-325mm. This allows precise end-position tuning at commissioning without adding external stops, though it does not lock the load without live air.
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