This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI80X205, 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 SI80X205
The AirTAC SI80 Standard Air Cylinder SI80X205 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø80mm bore and 205mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI80X205, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ80 mm
- Stroke205 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI80X205
- 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 SI80X205
The AirTAC SI80X205 is a discontinued double-acting ISO 15552 profile cylinder with an 80 mm bore and 205 mm stroke. It delivers 2513 N push force at 0.5 MPa via a G3/8 port. AirTAC replaced this legacy unit with the SAI80X205, a direct replacement retaining the exact ISO 15552 mounting interface, bore, stroke, output force, and port size to fit existing fixtures seamlessly.
The SAI upgrade features a modernized piston seal with two Y-shaped one-way elements for low start-up pressure and extended life. Note this specific SKU lacks a magnet (-S) and cannot accept position sensors.
Airtac SI80 Standard Air Cylinder SI80X205 Technical Specifications
| Model | Airtac SI80 Standard Air Cylinder SI80X205 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI80X205 |
| Bore size | Ø80 mm |
| Stroke | 205 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 SAI80X205 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 SAI80X205 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 SI80X205
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 80 | Bore size in mm. |
| ×205 | 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 SI80X205 Is Used
Pallet Diversion
Actuates heavy diverter arms on packaging lines to route loaded pallets using its 2513 N push force.
Carton Ejection
Pushes completed corrugated cartons off accumulation rollers at the end of automated packing machines.
Press Stub Ejection
Ejects formed metal stubs from lower press dies, utilizing the full 205 mm stroke to clear the tooling.
Replacing the Airtac SI80 Standard Air Cylinder SI80X205 with the SAI80X205
To replace the SI80X205, order the SAI80X205, confirming the ISO 15552 mounting interface, 80 mm bore, 205 mm stroke, G3/8 port (PT/G/NPT thread options), and mounting accessory (LB, FA, CA, TC, etc.). Because this SKU lacks a magnet, it cannot support CS1-B/DS1-B sensors; if sensing is needed, specify an SAI80X205S. Sizing both ways: the neighboring 63 mm bore yields 1559 N push at 0.5 MPa, while the 100 mm bore yields 3927 N. A plain cylinder does not hold load on air loss—the cushion only decelerates—so for holding use an external rod lock, pilot check valve, or the SAIL/BSAI lock variants. At 205 mm stroke, side-load and rod-bending risks are moderate, but ensure adequate guiding.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI80X205
- ✓ 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 SI80X205 FAQ
Yes, the SI80X205 is discontinued. The direct replacement is the AirTAC SAI80X205. It is dimensionally interchangeable per ISO 15552, matching the 80 mm bore, 205 mm stroke, output force, G3/8 port, and mounting interface.
The 80 mm bore features a G3/8 port and provides 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 force of 513 kgf at 1.0 MPa.
Request a Quote for the SAI80X205
Send us the quantity and destination. We confirm price, stock and lead time on the SAI80X205 replacement — usually within 7-8 hours.