This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI80AX900, 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 SI80AX900
The AirTAC SI80 Standard Air Cylinder SI80AX900 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø80mm bore and 900mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI80AX900, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ80 mm
- Stroke900 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI80AX900
- 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 SI80AX900
The AirTAC SI80AX900 is a discontinued double-acting ISO 15552 profile cylinder with an 80mm bore and 900mm stroke. It delivers 2513N push and 2268N pull at 0.5MPa, featuring a G3/8 port and an SUS420J2 stainless steel rod. Because this SKU lacks a magnet, it cannot accept position switches.
The direct replacement is the SAI80AX900, matching the bore, stroke, force, port, and ISO 15552 mounting interface. The SAI upgrade uses two Y-shaped one-way piston seals for low start-up pressure.
Airtac SI80 Standard Air Cylinder SI80AX900 Technical Specifications
| Model | Airtac SI80 Standard Air Cylinder SI80AX900 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI80AX900 |
| Bore size | Ø80 mm |
| Stroke | 900 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 SAI80AX900 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 SAI80AX900 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 SI80AX900
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 80 | Bore size in mm. |
| ×900 | 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 SI80AX900 Is Used
Pallet Push-Off
Pushes heavy pallets or totes from roller transfer lines, relying on the robust 80mm bore for steady force.
Material Lowering
Lowers vertical loads up to 128kg, requiring external guides to manage rod bending over the long 900mm extension.
Replacing the Airtac SI80 Standard Air Cylinder SI80AX900 with the SAI80AX900
To replace the SI80AX900, order the SAI80AX900 and confirm the ISO 15552 mounting interface, 80mm bore, 900mm stroke, G3/8 port, and SUS420J2 rod. Since this SKU has no -S magnet, it cannot take CS1-B/DS1-B sensors; if sensing is needed, specify a magnet on the SAI. For load holding, note that a plain cylinder drifts on air loss—the cushion only decelerates—so use an external rod lock, pilot check valve, or the SAIL/BSAI lock variant. At 900mm, add external guides to prevent rod bending and side loads. If sizing down, a 63mm bore gives 1559N push at 0.5MPa; sizing up, a 100mm bore yields 3927N.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI80AX900
- ✓ 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 SI80AX900 FAQ
Yes, the SI80AX900 is discontinued. The direct replacement is the SAI80AX900. It matches the ISO 15552 mounting interface, 80mm bore, 900mm stroke, output force, and G3/8 port, fitting existing fixtures perfectly.
The 80mm bore uses a G3/8 port. It provides 2513N push and 2268N pull at 0.5MPa, 3518N push at 0.7MPa, 4523N push at 0.9MPa, and a theoretical max of 513kgf at 1.0MPa. Speed is 30-800mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAI80AX900
Send us the quantity and destination. We confirm price, stock and lead time on the SAI80AX900 replacement — usually within 7-8 hours.