This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI80AX700S, 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 SI80AX700S
The AirTAC SI80 Standard Air Cylinder SI80AX700S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø80mm bore and 700mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI80AX700S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ80 mm
- Stroke700 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI80AX700S
- 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 SI80AX700S
The AirTAC SI80AX700S is a discontinued double-acting ISO 15552 profile cylinder with an extruded aluminum barrel. It features a 700 mm stroke, an SUS420J2 stainless piston rod, and delivers 2513 N push force at 0.5 MPa through its G3/8 port. AirTAC replaced this legacy unit with the SAI80AX700S, a direct sharing the exact ISO 15552 mounting interface, bore, and stroke.
The SAI upgrade introduces a two Y-shaped one-way piston seal for low start-up pressure and extended life. This SI-SKU includes a magnet for legacy CS1-B/DS1-B sensors, while the SAI uses current AirTAC switches. The SAI family also adds SAIL and BSAI lock variants absent in the SI line.
Airtac SI80 Standard Air Cylinder SI80AX700S Technical Specifications
| Model | Airtac SI80 Standard Air Cylinder SI80AX700S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI80AX700S |
| Bore size | Ø80 mm |
| Stroke | 700 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 SAI80AX700S 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 SAI80AX700S 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 SI80AX700S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 80 | Bore size in mm. |
| ×700 | 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 SI80AX700S Is Used
Long-Stroke Diversion
Executes 700 mm package routing on conveyor lines, using the stainless rod to resist moisture in washdown environments.
Stainless Actuation
Drives tooling stages in machining cells where the SUS420J2 rod prevents corrosion from cutting fluids.
Replacing the Airtac SI80 Standard Air Cylinder SI80AX700S with the SAI80AX700S
To replace the SI80AX700S, order the SAI80AX700S, confirming the ISO 15552 mounting interface, 80 mm bore, 700 mm stroke, G3/8 port, and the SUS420J2 stainless rod. 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 700 mm stroke, prevent rod-bending by using an external guide to absorb side loads. A plain cylinder does not hold load without live air—the cushion only decelerates—so use an external rod lock or pilot check valve for hold, or specify the SAIL or BSAI lock variant.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI80AX700S
- ✓ 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 SI80AX700S FAQ
Yes, the SI80AX700S is discontinued. The direct replacement is the SAI80AX700S. It shares the identical ISO 15552 mounting interface, 80 mm bore, 700 mm stroke, G3/8 port, and output force, fitting existing fixtures perfectly.
This double-acting cylinder has a G3/8 port. It generates 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 theoretical max of 513 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI80AX700S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI80AX700S replacement — usually within 7-8 hours.