This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI80AX800, 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 SI80AX800
The AirTAC SI80 Standard Air Cylinder SI80AX800 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø80mm bore and 800mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI80AX800, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ80 mm
- Stroke800 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI80AX800
- 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 SI80AX800
The AirTAC SI80AX800 is a discontinued double-acting ISO 15552 profile cylinder featuring an 80mm bore and 800mm stroke. It delivers 2513 N of push force at 0.5 MPa through a G3/8 port. The direct replacement is the SAI80AX800, matching the interface, stroke, force, and mounting. This SKU uses a SUS420J2 stainless steel rod (A suffix) for corrosion resistance but lacks a magnet, meaning it cannot accept position sensors.
The SAI upgrade introduces a two Y-shaped one-way piston seal for lower start-up pressure and longer life. For applications needing load holding on air loss, the SAI family adds SAIL and BSAI lock variants the SI lacked.
Airtac SI80 Standard Air Cylinder SI80AX800 Technical Specifications
| Model | Airtac SI80 Standard Air Cylinder SI80AX800 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI80AX800 |
| Bore size | Ø80 mm |
| Stroke | 800 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 SAI80AX800 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 SAI80AX800 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 SI80AX800
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 80 | Bore size in mm. |
| ×800 | 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 SI80AX800 Is Used
Long-Stroke Diversion
Pushes heavy pallets across transfer lines using the full 800mm travel with 2513 N force at 0.5 MPa.
Vertical Material Lift
Raises 128 kg loads to high shelving racks, benefiting from the SUS420J2 stainless rod in humid settings.
Large Press Ejection
Cycles large formed parts out of machinery beds, relying on the 36mm adjustable cushions to stop smoothly.
Replacing the Airtac SI80 Standard Air Cylinder SI80AX800 with the SAI80AX800
To replace the SI80AX800, order the SAI80AX800. Confirm the ISO 15552 mounting interface, 80mm bore, 800mm stroke, G3/8 port, and your specific mounting accessory. Because this SKU lacks the -S magnet, it cannot support legacy CS1-B/DS1-B sensors; order a magnet-equipped SAI if sensing is required. To size both ways: a 63mm bore yields 1559 N push at 0.5 MPa, while a 100mm bore yields 3927 N. Note that a plain cylinder drifts without live air; for load holding use an external rod lock or pilot check valve. At 800mm stroke, prevent rod bending by using an external guide to manage side loads.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI80AX800
- ✓ 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 SI80AX800 FAQ
Yes, the SI80AX800 is discontinued. The direct replacement is the SAI80AX800. It is dimensionally interchangeable per ISO 15552, keeping the same 80mm bore, 800mm stroke, force, G3/8 port, and mounting fixtures.
It features a G3/8 air port. The thrust ratings are: 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 force of 513 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI80AX800
Send us the quantity and destination. We confirm price, stock and lead time on the SAI80AX800 replacement — usually within 7-8 hours.