This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI80X380S, 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 SI80X380S
The AirTAC SI80 Standard Air Cylinder SI80X380S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø80mm bore and 380mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI80X380S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ80 mm
- Stroke380 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI80X380S
- 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 SI80X380S
The AirTAC SI80X380S is a discontinued double-acting ISO 15552 profile cylinder with an extruded aluminum barrel, adjustable air cushions both ends, and a built-in piston magnet. Delivering 2513 N push force at 0.5 MPa through a G3/8 port, it is replaced by the SAI80X380S. This direct upgrade shares the exact bore, stroke, force, port, and ISO 15552 mounting interface.
The SAI replacement upgrades the piston seal to two Y-shaped one-way elements for low start-up pressure and long life. The SAI family also adds SAIL, SAIF, and BSAI lock variants the SI lacked. Your -S SKU used CS1-B/DS1-B sensors; the SAI uses current AirTAC switches.
Airtac SI80 Standard Air Cylinder SI80X380S Technical Specifications
| Model | Airtac SI80 Standard Air Cylinder SI80X380S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI80X380S |
| Bore size | Ø80 mm |
| Stroke | 380 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 SAI80X380S 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 SAI80X380S 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 SI80X380S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 80 | Bore size in mm. |
| ×380 | 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 SI80X380S Is Used
Pallet Diversion
Pushes heavy pallets laterally across transfer lines using the 2513 N thrust class, with the 380 mm stroke clearing wide conveyor frames.
Press Ejection
Ejects formed metal parts from press beds, using the 380 mm travel to clear deep tooling before the next cycle begins.
Replacing the Airtac SI80 Standard Air Cylinder SI80X380S with the SAI80X380S
To replace the SI80X380S, order the SAI80X380S. Confirm the ISO 15552 mounting interface (LB, FA, CA, TC), the 80 mm bore, 380 mm stroke, and G3/8 port. The SAI keeps the Ø25 rod, M20x1.5 thread, and 36 mm cushions. If sizing both ways, neighboring bores (63 or 100 mm) alter the 0.5 MPa force (1559 N or 3927 N). A plain cylinder drifts on air loss; the cushion only decelerates. For load holding, use an external rod lock, pilot check valve, or the SAIL/BSAI lock variant. At 380 mm stroke, prevent rod bending by guiding the load externally to avoid side-loading.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI80X380S
- ✓ 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 SI80X380S FAQ
Yes, the SI80X380S is discontinued. The direct replacement is the SAI80X380S. It shares the same ISO 15552 mounting interface, 80 mm bore, 380 mm stroke, output force, G3/8 port, and accessories, fitting existing fixtures perfectly.
The 80 mm bore uses a G3/8 port. Forces 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 max of 513 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI80X380S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI80X380S replacement — usually within 7-8 hours.