
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80X105-40S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 105mm 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 SAIJ80X105-40-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster. It delivers a robust 2513N push and 2268N pull force at 0.5 MPa. The external stopper lets you dial back the 105mm nominal stroke by up to 40mm, creating a precise 65-105mm usable travel window for product changeovers without swapping the barrel.
This unit includes a standard piston magnet for CMSE reed and DMSE electronic sensors, which seat directly into the dual-side extruded aluminum barrel grooves. It features a 25mm carbon steel rod with an M20x1.5 thread, providing high side-load resistance. The SAIJ mounting set omits FB, CA, CB, and CR options, utilizing Basic, FA, LB, TC, FTC, TCM1, and TCM2 interfaces.
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80X105-40S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 105 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. |
| ×105 | 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 65-105mm stroke window during format changeovers to accommodate different package sizes without replacing the cylinder.
Use the 40mm rear adjuster to fine-tune the exact retract position during machine setup, eliminating the need for external spacers.
Leverage the 2513N push force to secure heavy workpieces, adjusting the clamp reach on the fly for varying part geometries.
Select this 80mm bore when a 50mm bore yields insufficient force (982N push at 0.5 MPa) and a 100mm bore is oversized (3927N push). The 40mm adjustment range is ideal for lines running variable product sizes, allowing you to fine-tune the retract end-position at commissioning rather than machining external stops or reverting to a fixed-stroke SAI cylinder.
When matching ISO 15552 replacements, verify the 105mm stroke, 40mm adjustment code, PT tapered port thread, and the -S magnet requirement. The rear adjuster acts strictly as a mechanical travel stop, not a lock; it cannot hold a load without live air. For true load-holding, use an external rod lock or specify an AirTAC SAIL or BSAI cylinder.
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, the push force reaches 4523N.
The rear adjuster screw acts as a mechanical stop that trims the 105mm nominal stroke, giving you a usable 65-105mm travel window. It only sets the end position and does not lock the load without continuous air pressure.
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