This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI80AX500S, 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 SI80AX500S
The AirTAC SI80 Standard Air Cylinder SI80AX500S 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 SAI80AX500S, 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 → SAI80AX500S
- 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 SI80AX500S
The AirTAC SI80AX500S is a discontinued double-acting ISO 15552 profile cylinder featuring an extruded aluminum barrel, a SUS420J2 stainless piston rod, and a built-in magnet. Delivering 2513 N push force at 0.5 MPa, it is replaced by the SAI80AX500S. This direct successor shares the exact G3/8 port, M20x1.5 thread, and ISO 15552 mounting interface for seamless fixture integration.
The SAI upgrade introduces a two Y-shaped one-way piston seal for low start-up pressure and extended life. While the standard NBR seals handle -20 to +70 C, a Viton H option raises heat resistance to 150 C. Note that a plain cylinder drifts without live air; use the SAIL or BSAI lock variants for rigid load holding.
Airtac SI80 Standard Air Cylinder SI80AX500S Technical Specifications
| Model | Airtac SI80 Standard Air Cylinder SI80AX500S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI80AX500S |
| 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 SAI80AX500S 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 SAI80AX500S 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 SI80AX500S
| 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 SI80AX500S Is Used
Long-Stroke Diversion
Drives 500 mm pusher arms on packaging lines to redirect heavy cartons between parallel conveyors using the 2513 N thrust.
Material Lowering
Controls the descent of 128 kg workpieces on vertical lifts, requiring external guides to manage the long rod side-load.
Stainless Rod Actuation
Actuates tooling stages in humid washdown areas using the SUS420J2 rod option to resist corrosion over the extended stroke.
Replacing the Airtac SI80 Standard Air Cylinder SI80AX500S with the SAI80AX500S
To replace the SI80AX500S, order the SAI80AX500S, confirming the ISO 15552 mounting interface, 80 mm bore, 500 mm stroke, G3/8 port, and magnet for CS1-B/DS1-B switches. The SAI family adds SAIL, SAIF, and BSAI variants for integrated locking or valving. Sizing both ways: a 63 mm bore yields 1559 N push at 0.5 MPa, while a 100 mm bore yields 3927 N. At 500 mm stroke, prevent rod bending by guiding the load externally. A plain cylinder does not hold load without live air; the cushion only decelerates, so specify an external rod lock or pilot check valve if needed.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI80AX500S
- ✓ 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 SI80AX500S FAQ
Yes, the SI80AX500S is discontinued. The direct replacement is the SAI80AX500S. It shares the same ISO 15552 mounting interface, 80 mm bore, 500 mm stroke, output force, G3/8 port, and mounting accessories, fitting existing fixtures perfectly.
This double-acting cylinder features a G3/8 air port. It delivers 2513 N push and 2268 N pull at 0.5 MPa, 3518 N push at 0.7 MPa, and 4523 N push at 0.9 MPa. The theoretical maximum force is 513 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI80AX500S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI80AX500S replacement — usually within 7-8 hours.