This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI80X1490S, 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 SI80X1490S
The AirTAC SI80 Standard Air Cylinder SI80X1490S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø80mm bore and 1490mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI80X1490S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ80 mm
- Stroke1490 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI80X1490S
- 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 SI80X1490S
The AirTAC SI80X1490S is a discontinued double-acting ISO 15552 profile cylinder with a 1490 mm stroke and a built-in piston magnet. Delivering 2513 N push at 0.5 MPa through a G3/8 port, it is replaced by the direct replacement SAI80X1490S, sharing the exact bore, force, and mounting interface.
The SAI upgrade features a two Y-shaped one-way piston seal for low start-up pressure. The SAI family also adds SAIL, SAIF, and BSAI variants the SI lacked. Your -S magnet works with legacy CS1-B/DS1-B switches.
Airtac SI80 Standard Air Cylinder SI80X1490S Technical Specifications
| Model | Airtac SI80 Standard Air Cylinder SI80X1490S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI80X1490S |
| Bore size | Ø80 mm |
| Stroke | 1490 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 SAI80X1490S 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 SAI80X1490S 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 SI80X1490S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 80 | Bore size in mm. |
| ×1490 | 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 SI80X1490S Is Used
Long-Stroke Material Transfer
Pushes heavy pallets along a 1490 mm conveyor lane using 2513 N of thrust at 0.5 MPa.
Large Press Ejection
Ejects formed parts from wide machinery beds, requiring an external guide to prevent rod bending.
Replacing the Airtac SI80 Standard Air Cylinder SI80X1490S with the SAI80X1490S
To replace this SI80X1490S, order the SAI80X1490S. Verify the ISO 15552 mounting interface, G3/8 port, M20x1.5 rod thread, and your -S magnet. If you need less force, the 63 mm bore offers 1559 N push; for more, the 100 mm bore gives 3927 N. At 1490 mm, prevent rod bending by using an external guide to handle side loads. A plain cylinder drifts without air; for load holding, use the SAIL lock, BSAI clamp-lock, or an external pilot check valve.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI80X1490S
- ✓ 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 SI80X1490S FAQ
Yes, the SI80X1490S is discontinued. The direct replacement is the SAI80X1490S, which matches the ISO 15552 mounting interface, 80 mm bore, 1490 mm stroke, G3/8 port, and output force.
It delivers 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 max force of 513 kgf at 1.0 MPa. Operating speed is 30-800 mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAI80X1490S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI80X1490S replacement — usually within 7-8 hours.