This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI80X180SFB, 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 SI80X180SFB
The AirTAC SI80 Standard Air Cylinder SI80X180SFB 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 SAI80X180SFB, 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 → SAI80X180SFB
- 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 SI80X180SFB
The AirTAC SI80X180SFB is a discontinued double-acting ISO 15552 profile cylinder with an FB flange mounting interface. Built with an extruded aluminum barrel, it delivers 2513 N push and 2268 N pull at 0.5 MPa through a G3/8 port. Because the SI line is end-of-life, you should order the direct replacement: SAI80X180SFB. It shares the same 80 mm bore, 180 mm stroke, force, and mounting fixtures.
The SAI upgrade introduces a refined piston seal utilizing two Y-shaped one-way elements for low start-up pressure and extended life. This -S model includes a piston magnet for legacy CS1-B/DS1-B sensors, while the SAI family also adds SAIL lock, SAIF valve, and BSAI clamp-lock variants the SI lacked.
Airtac SI80 Standard Air Cylinder SI80X180SFB Technical Specifications
| Model | Airtac SI80 Standard Air Cylinder SI80X180SFB |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI80X180SFB |
| 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 SAI80X180SFB 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 SAI80X180SFB 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 SI80X180SFB
| 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 SI80X180SFB Is Used
Press Fit Assembly
Drives bearings or pins into housings using its 2513 N thrust at 0.5 MPa, with the FB flange ensuring rigid stability under pressing loads.
Pallet Diversion
Actuates heavy diverters or lane shifters on packaging lines, where the 180 mm stroke provides exact movement for pallet routing.
Replacing the Airtac SI80 Standard Air Cylinder SI80X180SFB with the SAI80X180SFB
To replace this SI80X180SFB, order the SAI80X180SFB. Verify your ISO 15552 FB flange mounting, 180 mm stroke, G3/8 port, and the -S magnet requirement. If you need slightly less force, a 63 mm bore yields 1559 N push at 0.5 MPa; for more power, a 100 mm bore provides 3927 N. Remember that a standard cylinder drifts if air pressure drops, as the adjustable 36 mm cushions only decelerate at stroke ends. For secure load holding without live air, use an external pilot check valve or select the SAIL/BSAI lock variants. At 180 mm stroke, side-load risks are low, but always ensure rigid alignment to prevent rod bending.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI80X180SFB
- ✓ 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 SI80X180SFB FAQ
Yes, the SI80X180SFB is discontinued. The direct replacement is the SAI80X180SFB. It is dimensionally interchangeable per ISO 15552, retaining the same 80 mm bore, 180 mm stroke, FB flange, G3/8 port, and output force.
This double-acting cylinder uses a G3/8 air port. It generates 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 maximum of 513 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI80X180SFB
Send us the quantity and destination. We confirm price, stock and lead time on the SAI80X180SFB replacement — usually within 7-8 hours.