This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI80AX90S, 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 SI80AX90S
The AirTAC SI80 Standard Air Cylinder SI80AX90S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø80mm bore and 90mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI80AX90S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ80 mm
- Stroke90 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI80AX90S
- 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 SI80AX90S
The AirTAC SI80AX90S is a discontinued double-acting ISO 15552 profile cylinder with an extruded aluminum barrel and a 90 mm stroke. It delivers 2513 N push and 2268 N pull at 0.5 MPa through its G3/8 port. This version features an SUS420J2 stainless piston rod (-A) and a built-in magnet (-S) for legacy CS1-B/DS1-B sensors.
You must order the direct replacement SAI80AX90S. It shares the exact ISO 15552 mounting interface, 80 mm bore, stroke, force and port. The SAI upgrades the piston seal to two Y-shaped one-way elements for lower start-up pressure.
Airtac SI80 Standard Air Cylinder SI80AX90S Technical Specifications
| Model | Airtac SI80 Standard Air Cylinder SI80AX90S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI80AX90S |
| Bore size | Ø80 mm |
| Stroke | 90 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 SAI80AX90S 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 SAI80AX90S 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 SI80AX90S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 80 | Bore size in mm. |
| ×90 | 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 SI80AX90S Is Used
Heavy Package Diversion
Actuates a 90 mm diverting arm on a packaging line, moving heavy cartons reliably at speeds between 30 and 800 mm/s.
Stainless Rod Washdown
Leverages the SUS420J2 piston rod for corrosion resistance in damp food-processing environments while maintaining ISO 15552 fixture fit.
Replacing the Airtac SI80 Standard Air Cylinder SI80AX90S with the SAI80AX90S
To replace the SI80AX90S, specify the SAI80AX90S and verify your ISO 15552 mounting accessory (LB, FA, TC, etc.), 90 mm stroke, G3/8 port, and the -S magnet for current AirTAC switches. If you need more force, the 100 mm bore yields 3927 N push at 0.5 MPa; if you need less, the 63 mm bore provides 1559 N. Remember, a plain cylinder drifts on air loss because the 36 mm cushion only decelerates. For load holding, use an external rod lock, pilot check valve, or the SAIL/BSAI lock variants. The Viton H seal option raises the temperature limit to 150 C.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI80AX90S
- ✓ 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 SI80AX90S FAQ
Yes, the SI80AX90S is discontinued. The direct replacement is the SAI80AX90S. It shares the same ISO 15552 mounting interface, 80 mm bore, 90 mm stroke, output force, and G3/8 port, so it fits existing fixtures perfectly.
It features a G3/8 air port and M20x1.5 rod thread. The thrust is 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 maximum of 513 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI80AX90S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI80AX90S replacement — usually within 7-8 hours.