This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI80X560S, 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 SI80X560S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø80mm bore and 560mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI80X560S, which matches its ISO interface, bore, stroke, force and mounting.
The AirTAC SI80X560S is a discontinued double-acting ISO 15552 profile cylinder with a 560 mm stroke. Generating 2513 N push force at 0.5 MPa, it features a Ø25 mm rod, M20x1.5 thread, G3/8 port, and 36 mm cushions. The direct replacement is the SAI80X560S, retaining identical mounting, bore, stroke, force, and porting.
The SAI upgrade introduces a two Y-shaped one-way piston seal for low start-up pressure and long life. The SAI family also adds SAIL, SAIF, and BSAI lock variants the SI lacked. Your -S magnet works with legacy CS1-B/DS1-B sensors, while the SAI uses current AirTAC switches.
| Model | Airtac SI80 Standard Air Cylinder SI80X560S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI80X560S |
| Bore size | Ø80 mm |
| Stroke | 560 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 SAI80X560S 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 SAI80X560S 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. |
| ×560 | 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 transfer lines using the 2513 N push force, while the 560 mm stroke handles wide lane spacing.
Ejects formed metal parts from machinery, utilizing the 36 mm adjustable cushions to decelerate the rod smoothly at stroke end.
To replace the SI80X560S, order the SAI80X560S. Verify the ISO 15552 interface, 80 mm bore, 560 mm stroke, G3/8 port (PT/G/NPT), and mounting accessory. Because this is a 560 mm stroke, prevent rod bending by using external guides to absorb side loads. Size both ways: a 63 mm bore yields 1559 N push at 0.5 MPa, while a 100 mm bore gives 3927 N. Note that a plain cylinder drifts on air loss; the cushion only decelerates. For load holding, use an external pilot check valve or the SAIL/BSAI lock variant.
Replacement checklist
Yes, the SI80X560S is discontinued. The direct replacement is the SAI80X560S. It is dimensionally interchangeable per ISO 15552, matching the 80 mm bore, 560 mm stroke, G3/8 port, and mounting fixtures exactly.
The 80 mm bore delivers 2513 N push and 2268 N pull at 0.5 MPa, 3518 N push at 0.7 MPa, 4523 N at 0.9 MPa, and a theoretical max of 513 kgf at 1.0 MPa. Operating speed is 30-800 mm/s.
Send us the quantity and destination. We confirm price, stock and lead time on the SAI80X560S replacement — usually within 7-8 hours.