This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI80X410, with the same bore, stroke, output force, port and mounting, so it fits the same application. The SAI replacement keeps the same ISO 15552 mounting interface, bore, stroke, output force and accessories, so it drops straight into existing fixtures. It is the current-production version of this cylinder with an upgraded piston seal.

The AirTAC SI80 Standard Air Cylinder SI80X410 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø80mm bore and 410mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI80X410, which matches its ISO interface, bore, stroke, force and mounting.
The AirTAC SI80X410 is a discontinued double-acting ISO 15552 profile cylinder with an 80mm bore and 410mm stroke. Delivering 2513N push and 2268N pull at 0.5MPa via a G3/8 port, it is directly replaced by the SAI80X410. This direct successor matches the original interface, M20x1.5 rod thread, and 36mm cushions.
The SAI upgrade features two Y-shaped one-way piston seals for low start-up pressure and extended life. This no-magnet SKU cannot accept sensors, though legacy -S versions used CS1-B/DS1-B switches. For high heat, Viton H seals raise the limit to 150C.
| Model | Airtac SI80 Standard Air Cylinder SI80X410 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI80X410 |
| Bore size | Ø80 mm |
| Stroke | 410 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 standard stroke | Up to 1500 mm |
Specifications follow the official AirTAC SI datasheet (now discontinued). The SAI80X410 carries the same ISO 15552 ratings. Confirm against the product label before installation. Thread options: PT / G / NPT.
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 2513 N | 2268 N |
| 0.7 MPa | 3519 N | — |
| Max (@1.0 MPa) | 513 kgf | |
The SAI80X410 produces the same force from the same bore. Actual usable force is lower than theoretical; size with a margin.
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 80 | Bore size in mm. |
| ×410 | Stroke length in mm. |
| -S | Optional built-in magnet for sensor position sensing. |
Legacy SI-family variants: SID (double rod), SIJ (adjustable stroke) — each maps to its SAI equivalent (SID→SAID, SIJ→SAIJ). Rod material: carbon steel (blank) / SUS420J2 (A) / SUS304 (B).
Routes heavy pallets across packaging lines using the 2513N push force, with the 410mm stroke clearing wide transfer plates.
Ejects formed metal components from hydraulic presses, relying on the 36mm adjustable cushions to brake the load smoothly.
To replace the SI80X410, order the SAI80X410, confirming the ISO 15552 mounting interface, 80mm bore, 410mm stroke, G3/8 port, and M20x1.5 thread. Because this SKU lacks the -S magnet, it cannot accept position sensors. If sizing up or down, neighboring bores are 63mm (1559N push @0.5MPa) and 100mm (3927N push @0.5MPa). Note that a plain cylinder drifts on air loss—the cushion only decelerates—so use an external rod lock, pilot check valve, or the SAIL/BSAI lock variant for load holding. Finally, at 410mm, this long stroke requires external guides to prevent rod bending under side loads.
Replacement checklist
Yes, the SI80X410 is discontinued. The direct replacement is the SAI80X410. It is dimensionally interchangeable per ISO 15552, matching the 80mm bore, 410mm stroke, G3/8 port, output force, and mounting accessories.
The 80mm bore uses a G3/8 port. It delivers 2513N push and 2268N pull at 0.5MPa, 3518N push at 0.7MPa, 4523N push at 0.9MPa, and a theoretical max of 513kgf at 1.0MPa.
Send us the quantity and destination. We confirm price, stock and lead time on the SAI80X410 replacement — usually within 7-8 hours.