This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI80X180FA, 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 SI80X180FA
The AirTAC SI80 Standard Air Cylinder SI80X180FA 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 SAI80X180FA, 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 → SAI80X180FA
- 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 SI80X180FA
The AirTAC SI80X180FA is a discontinued double-acting ISO 15552 profile cylinder with an 80 mm bore, 180 mm stroke, and FA flange mounting. Delivering 2513 N push force at 0.5 MPa through a G3/8 port, it is replaced by the SAI80X180FA. This direct upgrade shares the exact ISO 15552 mounting interface, bore, stroke, and force, fitting existing fixtures perfectly.
The SAI upgrade features a new piston seal with two Y-shaped one-way elements for low start-up pressure and long life. Note this non-magnet SKU cannot take a sensor; legacy CS1-B/DS1-B switches require a magnet. For high heat, Viton H seals raise limits to 150 C.
Airtac SI80 Standard Air Cylinder SI80X180FA Technical Specifications
| Model | Airtac SI80 Standard Air Cylinder SI80X180FA |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI80X180FA |
| 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 SAI80X180FA 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 SAI80X180FA 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 SI80X180FA
| 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 SI80X180FA Is Used
Press Fit Assembly
Drives bearings and pins into housings on an automated line, utilizing the 2513 N push force at 0.5 MPa to seat components reliably.
Pallet Diverting
Actuates heavy-duty routing gates on a conveyor network, using the FA flange mount to withstand lateral shifting during high-speed package transfer.
Vacuum Lifter Actuation
Raises and lowers large foam suction cup arrays for handling sheet materials, where the 128 kg vertical lift capacity handles substantial gripper weight.
Replacing the Airtac SI80 Standard Air Cylinder SI80X180FA with the SAI80X180FA
To replace the SI80X180FA, order the SAI80X180FA. Verify the ISO 15552 FA flange interface, 80 mm bore, 180 mm stroke, and G3/8 port. Because this specific SKU lacks the -S magnet, it cannot accept position sensors; if sensing is needed, select an SAI80X180FAS instead. Sizing both ways: an 80 mm bore yields 2513 N push at 0.5 MPa, while a neighboring 63 mm bore offers 1559 N, and a 100 mm bore provides 3927 N. The 180 mm stroke is under the 300 mm threshold, so side-load rod-bending risks are minimal, but always ensure linear guidance. A plain cylinder drifts on air loss; the cushion only decelerates. For load holding, use an external pilot check valve or explore the SAIL or BSAI lock variants.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI80X180FA
- ✓ 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 SI80X180FA FAQ
Yes, the SI80X180FA is discontinued. The direct replacement is the SAI80X180FA. It shares the identical ISO 15552 mounting interface, 80 mm bore, 180 mm stroke, force, and G3/8 port, fitting directly into your existing FA flange fixtures.
This double-acting cylinder features a G3/8 air port and a 25 mm piston rod. Theoretical 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; with a maximum force of 513 kgf at 1.0 MPa. Adjustable air cushions are 36 mm at each end.
Related AirTAC SAI Cylinders
Request a Quote for the SAI80X180FA
Send us the quantity and destination. We confirm price, stock and lead time on the SAI80X180FA replacement — usually within 7-8 hours.