This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI80AX950, 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 SI80AX950
The AirTAC SI80 Standard Air Cylinder SI80AX950 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø80mm bore and 950mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI80AX950, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ80 mm
- Stroke950 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI80AX950
- 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 SI80AX950
The AirTAC SI80AX950 is a discontinued double-acting ISO 15552 profile cylinder with an extruded aluminum barrel. It delivers 2513 N push force at 0.5 MPa through a 25 mm rod and G3/8 port. The direct replacement is the SAI80AX950, sharing the exact bore, stroke, force, port, and mounting interface.
The SAI upgrade features a two Y-shaped one-way piston seal for low start-up pressure and long life. This SKU has a SUS420J2 stainless rod (A) but no magnet, so it cannot take a CS1-B/DS1-B sensor. For high heat, Viton H seals raise the temperature limit to 150 C.
Airtac SI80 Standard Air Cylinder SI80AX950 Technical Specifications
| Model | Airtac SI80 Standard Air Cylinder SI80AX950 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI80AX950 |
| Bore size | Ø80 mm |
| Stroke | 950 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 SAI80AX950 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 SAI80AX950 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 SI80AX950
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 80 | Bore size in mm. |
| ×950 | 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 SI80AX950 Is Used
Long-Stroke Diversion
Pushes heavy pallets across transfer lines using the 950 mm stroke and 2513 N force, requiring external guides to prevent rod bending.
Stainless Rod Actuation
Actuates tooling in humid washdown areas using the SUS420J2 stainless steel rod option to resist corrosion.
Replacing the Airtac SI80 Standard Air Cylinder SI80AX950 with the SAI80AX950
To replace the SI80AX950, order the SAI80AX950. Confirm the ISO 15552 mounting interface, 950 mm stroke, G3/8 port, and SUS420J2 rod. Sizing both ways: a 100 mm bore gives 3927 N push at 0.5 MPa, while a 63 mm bore gives 1559 N. Because this is a 950 mm stroke, use external guides to prevent rod bending and side loads. This SKU lacks a magnet (-S), so no position sensing is possible. A plain cylinder does not hold load on air loss; use an external rod lock, pilot check valve, or the SAIL/BSAI lock variant for secure holding.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI80AX950
- ✓ 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 SI80AX950 FAQ
Yes, the SI80AX950 is discontinued. The direct replacement is the SAI80AX950. It shares the same ISO 15552 mounting interface, 80 mm bore, 950 mm stroke, output force, G3/8 port, and accessories, fitting existing fixtures perfectly.
The G3/8 port bore 80 mm cylinder provides 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 maximum theoretical force of 513 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI80AX950
Send us the quantity and destination. We confirm price, stock and lead time on the SAI80AX950 replacement — usually within 7-8 hours.