This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI80X180, 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 SI80X180
The AirTAC SI80 Standard Air Cylinder SI80X180 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø80mm bore and 180mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI80X180, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ80 mm
- Stroke180 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI80X180
- 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 SI80X180
The AirTAC SI80X180 is a discontinued double-acting ISO 15552 profile cylinder with an 80mm bore and 180mm stroke. Delivering 2513N push force at 0.5MPa via a G3/8 port, it is replaced by the SAI80X180. This direct upgrade shares the exact ISO 15552 mounting interface, bore, stroke and output force. The SAI features an upgraded piston seal with two Y-shaped one-way elements for low start-up pressure and long life.
Because this specific SI SKU lacks the -S magnet suffix, it cannot accept a position sensor. If you need sensing, order the SAI with S. For load holding, note that a standard cylinder drifts on air loss; the cushion only decelerates. Use an external pilot check valve or the SAIL/BSAI lock variants.
Airtac SI80 Standard Air Cylinder SI80X180 Technical Specifications
| Model | Airtac SI80 Standard Air Cylinder SI80X180 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI80X180 |
| Bore size | Ø80 mm |
| Stroke | 180 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 SAI80X180 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 SAI80X180 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 SI80X180
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 80 | Bore size in mm. |
| ×180 | 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 SI80X180 Is Used
Mid-Tonnage Pressing
Applies 2513N of push force at 0.5MPa for seating bearings or light stamping tasks within automated machinery.
Package Diversion
Drives 180mm stroke diverting arms or routing gates to reposition heavy cartons on material handling lines.
Pallet Lift Stops
Acts as a robust physical stop or positioning block for pallets weighing up to the 128kg vertical lift limit.
Replacing the Airtac SI80 Standard Air Cylinder SI80X180 with the SAI80X180
To replace the SI80X180, order the SAI80X180. Verify your ISO 15552 mounting accessory (LB, FA, TC, etc.) and thread option (PT, G, NPT). The SAI family adds SAIL, SAIF and BSAI variants the SI lacked. If sizing alternatives, neighbouring bores (63mm / 100mm) offer 1559N / 3927N at 0.5MPa. This 180mm stroke is under the 300mm threshold where side-load guides become critical, but always ensure axial alignment. Remember: a plain cylinder does not hold load without live air.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI80X180
- ✓ 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 SI80X180 FAQ
Yes, the SI80X180 is discontinued. The direct replacement is the SAI80X180. It is dimensionally interchangeable per ISO 15552, retaining the same 80mm bore, 180mm stroke, G3/8 port and mounting interface.
This double-acting cylinder uses a G3/8 air port. It generates 2513N push and 2268N pull at 0.5MPa, 3518N push at 0.7MPa, and a theoretical maximum of 513kgf at 1.0MPa.
Request a Quote for the SAI80X180
Send us the quantity and destination. We confirm price, stock and lead time on the SAI80X180 replacement — usually within 7-8 hours.