This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI80AX500, 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 SI80AX500
The AirTAC SI80 Standard Air Cylinder SI80AX500 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø80mm bore and 500mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI80AX500, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ80 mm
- Stroke500 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI80AX500
- 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 SI80AX500
The AirTAC SI80AX500 is a discontinued double-acting ISO 15552 profile cylinder with an 80mm bore and 500mm stroke. It delivers 2513N push and 2268N pull at 0.5MPa through a G3/8 port. AirTAC replaced this legacy unit with the SAI80AX500, a direct upgrade retaining the exact interface, bore, stroke, force, and mounting accessories.
The SAI upgrade features a modernized piston seal with two Y-shaped one-way elements for low start-up pressure and extended life. This specific SKU uses an SUS420J2 stainless steel rod (the -A option) but lacks a magnet, meaning it cannot accept position switches. For load holding, note that the standard cushion only decelerates; a SAIL or BSAI lock variant is needed to hold loads.
Airtac SI80 Standard Air Cylinder SI80AX500 Technical Specifications
| Model | Airtac SI80 Standard Air Cylinder SI80AX500 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI80AX500 |
| Bore size | Ø80 mm |
| Stroke | 500 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 SAI80AX500 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 SAI80AX500 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 SI80AX500
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 80 | Bore size in mm. |
| ×500 | 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 SI80AX500 Is Used
Pallet Diversion
Pushes heavy pallets laterally across transfer lines using its 2513N push force at 0.5MPa, with the 500mm stroke clearing wide conveyor frames.
Press Ejection
Ejects formed metal components from press beds, utilizing the adjustable 36mm air cushions to decelerate the rod smoothly at stroke end.
Replacing the Airtac SI80 Standard Air Cylinder SI80AX500 with the SAI80AX500
To replace the SI80AX500, order the SAI80AX500. Verify your ISO 15552 mounting interface (LB, FA, TC, etc.), the G3/8 port thread, and the M20x1.5 rod-end thread. Because this SKU lacks the -S magnet, it cannot support legacy CS1-B/DS1-B sensors; if sensing is needed, switch to an SAI80X500S. When sizing, neighboring bores offer different forces: a 63mm bore yields 1559N push at 0.5MPa, while a 100mm bore yields 3927N. If your application requires holding a load during air loss, do not rely on the cushions—use an external pilot check valve or select the SAIL/BSAI lock variant. Finally, at 500mm stroke, prevent rod bending by guiding the load externally to avoid side-loading.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI80AX500
- ✓ 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 SI80AX500 FAQ
Yes, the SI80AX500 is discontinued. The direct replacement is the SAI80AX500. It is dimensionally interchangeable per ISO 15552, matching the 80mm bore, 500mm stroke, 25mm rod, G3/8 port, and mounting interface.
At 0.5MPa it provides 2513N push and 2268N pull; at 0.7MPa push is 3518N; at 0.9MPa push is 4523N; and the theoretical max force is 513kgf at 1.0MPa. Operating pressure is 0.15-1.0MPa, speed is 30-800mm/s, and the G3/8 port is fixed by the 80mm bore.
Related AirTAC SAI Cylinders
Request a Quote for the SAI80AX500
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