This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI80AX90, 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 SI80AX90
The AirTAC SI80 Standard Air Cylinder SI80AX90 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 SAI80AX90, 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 → SAI80AX90
- 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 SI80AX90
The AirTAC SI80AX90 is a discontinued double-acting ISO 15552 profile cylinder with an extruded aluminum barrel, delivering 2513 N push and 2268 N pull at 0.5 MPa. AirTAC replaced this legacy unit with the SAI80AX90. The SAI is a direct upgrade retaining the exact 80 mm bore, 90 mm stroke, G3/8 port, M20x1.5 rod thread, and ISO 15552 mounting interface. This SKU features the SUS420J2 stainless steel piston rod (A suffix) for corrosion resistance but lacks a magnet, meaning it cannot accept position switches.
The SAI80AX90 introduces an upgraded piston seal with two Y-shaped one-way elements for low start-up pressure and extended life. For applications needing load holding on air loss, note that a plain cylinder drifts; the cushion only decelerates. You would need an external pilot check valve or the SAIL/BSAI lock variants.
Airtac SI80 Standard Air Cylinder SI80AX90 Technical Specifications
| Model | Airtac SI80 Standard Air Cylinder SI80AX90 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI80AX90 |
| 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 SAI80AX90 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 SAI80AX90 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 SI80AX90
| 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 SI80AX90 Is Used
Stainless Rod Clamping
Ideal for packaging lines where the SUS420J2 rod resists washdown moisture while providing 2513 N of clamping thrust at 0.5 MPa.
Transfer Diverters
Drives 90 mm diverting strokes on conveyor belts, utilizing the 36 mm adjustable air cushions to smoothly stop the 80 mm bore at stroke ends.
Replacing the Airtac SI80 Standard Air Cylinder SI80AX90 with the SAI80AX90
To replace the SI80AX90, order the SAI80AX90. Verify your ISO 15552 mounting interface, 80 mm bore, 90 mm stroke, G3/8 port, and M20x1.5 thread. Because this specific SKU lacks a magnet (-S), it cannot support legacy CS1-B/DS1-B sensors; if sensing is needed, specify an SAI80X90S. The A suffix denotes a SUS420J2 stainless rod, ideal for moist environments compared to the standard carbon steel rod. If sizing alternatives, neighboring bores (63 mm or 100 mm) change the force output significantly; this 80 mm bore yields 3518 N push at 0.7 MPa. For any load holding on air loss, remember the adjustable cushion only decelerates; add an external rod lock or explore the SAIL or BSAI lock variants.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI80AX90
- ✓ 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 SI80AX90 FAQ
Yes, the AirTAC SI80AX90 is discontinued. The direct replacement is the SAI80AX90. It shares the identical ISO 15552 mounting interface, 80 mm bore, 90 mm stroke, G3/8 port, and output force, fitting existing fixtures perfectly while adding an upgraded piston seal.
The 80 mm bore features a G3/8 air port and M20x1.5 rod thread. 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 maximum of 513 kgf at 1.0 MPa.
Request a Quote for the SAI80AX90
Send us the quantity and destination. We confirm price, stock and lead time on the SAI80AX90 replacement — usually within 7-8 hours.