This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI80X80S, 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 SI80X80S
The AirTAC SI80 Standard Air Cylinder SI80X80S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø80mm bore and 80mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI80X80S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ80 mm
- Stroke80 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI80X80S
- 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 SI80X80S
The AirTAC SI80X80S is a discontinued double-acting ISO 15552 profile cylinder with an 80mm bore and 80mm stroke. Generating 2513N push force at 0.5MPa via a G3/8 port, it is replaced by the SAI80X80S. This direct successor matches the exact interface, bore, stroke, force and mounting.
The SAI upgrade features a two Y-shaped one-way piston seal for low start-up pressure and long life. The SAI family also adds SAIL, SAIF and BSAI lock variants the SI lacked. Your -S magnet works with CS1-B/DS1-B switches.
Airtac SI80 Standard Air Cylinder SI80X80S Technical Specifications
| Model | Airtac SI80 Standard Air Cylinder SI80X80S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI80X80S |
| Bore size | Ø80 mm |
| Stroke | 80 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 SAI80X80S 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 SAI80X80S 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 SI80X80S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 80 | Bore size in mm. |
| ×80 | 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 SI80X80S Is Used
Mid-Tonnage Clamping
Secures heavy workpieces in machining fixtures, utilizing the 2513N push force at 0.5MPa for rigid holding.
Package Diversion
Drives robust routing gates on high-throughput lines, where the 80mm stroke and 30-800mm/s speed provide swift actuation.
Pallet Stopping
Halts loaded pallets at transfer stations, absorbing kinetic energy with the 36mm adjustable air cushions.
Replacing the Airtac SI80 Standard Air Cylinder SI80X80S with the SAI80X80S
To replace the SI80X80S, order the SAI80X80S. Verify the ISO 15552 mounting interface, 80mm bore, 80mm stroke, G3/8 port (PT/G/NPT) and mounting accessory. The -S suffix confirms the piston magnet for CS1-B/DS1-B switches. If sizing alternatives, neighbouring bores (63mm or 100mm) alter the 2513N @0.5MPa force. Note: a plain cylinder drifts on air loss as the cushion only decelerates; for load holding use an external rod lock, pilot check valve, or the SAIL/BSAI lock variant.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI80X80S
- ✓ 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 SI80X80S FAQ
Yes, the SI80X80S is discontinued. The direct replacement is the SAI80X80S. It is dimensionally interchangeable per ISO 15552, keeping the same 80mm bore, 80mm stroke, 2513N force, G3/8 port and mounting interface.
It features a G3/8 port and Ø25mm rod. Force output is 2513N push and 2268N pull at 0.5MPa, 3518N push at 0.7MPa, 4523N push at 0.9MPa, and a theoretical max of 513kgf at 1.0MPa.
Request a Quote for the SAI80X80S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI80X80S replacement — usually within 7-8 hours.