This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI80X800S, 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 SI80X800S
The AirTAC SI80 Standard Air Cylinder SI80X800S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø80mm bore and 800mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI80X800S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ80 mm
- Stroke800 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI80X800S
- 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 SI80X800S
The AirTAC SI80X800S is a discontinued double-acting ISO 15552 profile cylinder with an 80mm bore and 800mm stroke. Delivering 2513N push force at 0.5MPa, it features a G3/8 port and a built-in piston magnet for CS1-B/DS1-B switches. AirTAC replaced this legacy unit with the SAI80X800S, a direct replacement retaining the exact ISO 15552 mounting interface, bore, stroke, force, and port size.
The SAI upgrade introduces a two Y-shaped one-way piston seal for low start-up pressure and long life, while the SAI family adds SAIL, SAIF, and BSAI lock variants the SI lacked. Rod material options include carbon steel, SUS420J2, or SUS304, with Viton H seals available for high-temperature environments.
Airtac SI80 Standard Air Cylinder SI80X800S Technical Specifications
| Model | Airtac SI80 Standard Air Cylinder SI80X800S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI80X800S |
| Bore size | Ø80 mm |
| Stroke | 800 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 SAI80X800S 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 SAI80X800S 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 SI80X800S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 80 | Bore size in mm. |
| ×800 | 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 SI80X800S Is Used
Long-Stroke Diversion
Pushes heavy pallets sideways on a packaging line using its 800mm reach and 2513N force at 0.5MPa.
Large Press Ejection
Ejects molded parts from a large press, using the adjustable 36mm air cushions to decelerate at stroke end.
Replacing the Airtac SI80 Standard Air Cylinder SI80X800S with the SAI80X800S
To replace the SI80X800S, order the SAI80X800S, confirming the ISO 15552 mounting fixture, 80mm bore, 800mm stroke, G3/8 port, and the -S magnet for current AirTAC switches. Sizing both ways: a 63mm bore yields 1559N push at 0.5MPa, while a 100mm bore yields 3927N. A plain cylinder drifts on air loss; the cushion only decelerates, so use the SAIL or BSAI lock variant, an external rod lock, or a pilot check valve for held loads. Because 800mm exceeds 300mm, prevent rod bending by using external guides to manage side loads.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI80X800S
- ✓ 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 SI80X800S FAQ
Yes, the SI80X800S is discontinued. The direct replacement is the SAI80X800S. It shares the exact ISO 15552 mounting interface, 80mm bore, 800mm stroke, output force, and G3/8 port, fitting existing fixtures perfectly.
The 80mm bore uses a G3/8 port. It delivers 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. Operating speed is 30-800mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAI80X800S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI80X800S replacement — usually within 7-8 hours.