This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI80AX115S, 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 SI80AX115S
The AirTAC SI80 Standard Air Cylinder SI80AX115S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø80mm bore and 115mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI80AX115S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ80 mm
- Stroke115 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI80AX115S
- 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 SI80AX115S
The AirTAC SI80AX115S is a discontinued double-acting ISO 15552 profile cylinder featuring an extruded aluminum barrel, a SUS420J2 stainless piston rod (-A) and a built-in magnet (-S). Delivering 2513 N push force at 0.5 MPa through its G3/8 port, it is replaced by the SAI80AX115S. This direct upgrade maintains the exact ISO 15552 mounting interface, 115 mm stroke and 513 kgf maximum force.
The SAI replacement features an upgraded piston seal with two Y-shaped one-way elements for low start-up pressure and long life. The -S magnet supports legacy CS1-B/DS1-B sensors, while a plain cylinder cannot hold a load without live air—the cushion only decelerates.
Airtac SI80 Standard Air Cylinder SI80AX115S Technical Specifications
| Model | Airtac SI80 Standard Air Cylinder SI80AX115S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI80AX115S |
| Bore size | Ø80 mm |
| Stroke | 115 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 SAI80AX115S 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 SAI80AX115S 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 SI80AX115S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 80 | Bore size in mm. |
| ×115 | 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 SI80AX115S Is Used
Stainless Rod Actuation
Leverages the SUS420J2 rod for corrosion resistance in washdown clamping tasks requiring 2513 N push force at 0.5 MPa.
Mid-Stroke Diversion
Uses the 115 mm stroke to push heavy packages between lines, safely operating at a 1508 N working load.
Replacing the Airtac SI80 Standard Air Cylinder SI80AX115S with the SAI80AX115S
To replace the discontinued SI80AX115S, order the SAI80AX115S. Confirm the ISO 15552 mounting interface, the 115 mm stroke, the G3/8 port, and your mounting accessory. The -A suffix specifies the SUS420J2 stainless rod, and -S denotes the magnet for CS1-B/DS1-B switches (the SAI uses current AirTAC switches). When sizing both ways, neighboring bores offer different force classes; this 80 mm bore yields 2513 N push at 0.5 MPa. For load holding on air loss, note the cushion only decelerates and the piston drifts—use an external rod lock, pilot check valve, or the SAIL/BSAI lock variants.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI80AX115S
- ✓ 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 SI80AX115S FAQ
Yes, the SI80AX115S is discontinued. The direct replacement is the SAI80AX115S. It shares the same ISO 15552 mounting interface, bore, stroke, G3/8 port and force, but adds an upgraded piston seal.
It features a G3/8 port and provides 2513 N push / 2268 N pull at 0.5 MPa, 3518 N push at 0.7 MPa, and a theoretical maximum of 513 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI80AX115S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI80AX115S replacement — usually within 7-8 hours.