This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI80BX1080S, 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.
Airtac SI80 Standard Air Cylinder SI80BX1080S
The AirTAC SI80 Standard Air Cylinder SI80BX1080S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø80mm bore and 1080mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI80BX1080S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ80 mm
- Stroke1080 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI80BX1080S
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac SI80 Standard Air Cylinder SI80BX1080S
The AirTAC SI80BX1080S is a discontinued double-acting ISO 15552 profile cylinder with a 1080 mm stroke and an SUS304 stainless steel piston rod (B option). Generating 2513 N push force at 0.5 MPa, it is replaced direct by the SAI80BX1080S. This successor shares the exact bore, stroke, G3/8 port and mounting interface, fitting existing fixtures perfectly.
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 lock and BSAI clamp variants absent in the SI line. This -S model carries a piston magnet for CS1-B/DS1-B sensors.
Airtac SI80 Standard Air Cylinder SI80BX1080S Technical Specifications
| Model | Airtac SI80 Standard Air Cylinder SI80BX1080S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI80BX1080S |
| Bore size | Ø80 mm |
| Stroke | 1080 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 SAI80BX1080S carries the same ISO 15552 ratings. Confirm against the product label before installation. Thread options: PT / G / NPT.
Theoretical Output Force (Ø80mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 2513 N | 2268 N |
| 0.7 MPa | 3519 N | — |
| Max (@1.0 MPa) | 513 kgf | |
The SAI80BX1080S produces the same force from the same bore. Actual usable force is lower than theoretical; size with a margin.
Model Code: Airtac SI80 Standard Air Cylinder SI80BX1080S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 80 | Bore size in mm. |
| ×1080 | 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).
Where the Airtac SI80 Standard Air Cylinder SI80BX1080S Is Used
Long-Stroke Diversion
Pushes heavy pallets across 1080 mm transfer lines using the 2513 N thrust at 0.5 MPa.
Stainless Washdown Gate
Actuates washdown access doors via the SUS304 rod option, resisting moisture and corrosion.
Replacing the Airtac SI80 Standard Air Cylinder SI80BX1080S with the SAI80BX1080S
To replace the SI80BX1080S, order the SAI80BX1080S to retain the 80 mm bore, 1080 mm stroke, G3/8 port, M20x1.5 thread, and ISO 15552 mounting interface. If downsizing, a 63 mm bore yields 1559 N push at 0.5 MPa; if upsizing, a 100 mm bore provides 3927 N. Because this is a long 1080 mm stroke, use external guides to prevent rod bending and side-load damage. A plain cylinder drifts on air loss—the cushion only decelerates—so use a pilot check valve or SAIL/BSAI lock variant to hold loads. The B rod option specifies SUS304 stainless steel for corrosion resistance, and the -S suffix means a magnet for CS1-B/DS1-B switches.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI80BX1080S
- ✓ Same bore / stroke / force
- ✓ Port/thread type (PT/G/NPT)
- ✓ Magnet (-S) for sensors?
- ✓ Mounting reused (FA/FB/CA/CB/CR/LB/TC)
Airtac SI80 Standard Air Cylinder SI80BX1080S FAQ
Yes, the SI80BX1080S is discontinued. The direct replacement is the SAI80BX1080S. It is dimensionally interchangeable per ISO 15552, matching the 80 mm bore, 1080 mm stroke, G3/8 port, and mounting fixtures.
It features a G3/8 air port and M20x1.5 rod thread. Force ratings are: 2513 N push and 2268 N pull at 0.5 MPa, 3518 N push at 0.7 MPa, 4523 N push at 0.9 MPa, and a maximum theoretical force of 513 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI80BX1080S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI80BX1080S replacement — usually within 7-8 hours.