This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI80X140FA, 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 SI80X140FA
The AirTAC SI80 Standard Air Cylinder SI80X140FA is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø80mm bore and 140mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI80X140FA, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ80 mm
- Stroke140 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI80X140FA
- 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 SI80X140FA
The AirTAC SI80X140FA is a discontinued double-acting ISO 15552 profile cylinder with an 80 mm bore and 140 mm stroke. It features an FA flange mounting interface, a Ø25 mm piston rod, M20x1.5 rod threads, and a G3/8 air port. Delivering 2513 N push and 2268 N pull at 0.5 MPa, it was built for heavy-duty positioning. Because this SI unit is end-of-life, you should order the direct replacement: SAI80X140FA.
The SAI80X140FA shares the identical ISO 15552 mounting dimensions, bore, stroke, force, and port size, fitting your existing fixtures perfectly. The SAI upgrade features a modernized piston seal with two Y-shaped one-way elements for lower start-up pressure and longer life. Note this specific SKU lacks a magnet (-S), so it cannot accept CS1-B or DS1-B sensors.
Airtac SI80 Standard Air Cylinder SI80X140FA Technical Specifications
| Model | Airtac SI80 Standard Air Cylinder SI80X140FA |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI80X140FA |
| Bore size | Ø80 mm |
| Stroke | 140 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 SAI80X140FA 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 SAI80X140FA 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 SI80X140FA
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 80 | Bore size in mm. |
| ×140 | 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 SI80X140FA Is Used
Press Fit Assembly
Drives heavy bushings and bearings into housings, utilizing the 2513 N push force at 0.5 MPa to seat components reliably without an external hydraulic unit.
Pallet Diversion
Actuates heavy lane-guides and stop gates on 80 mm profile conveyors, using the FA flange to mount rigidly against side-impact loads during traffic routing.
Replacing the Airtac SI80 Standard Air Cylinder SI80X140FA with the SAI80X140FA
To replace the discontinued SI80X140FA, order the SAI80X140FA. Verify your ISO 15552 FA flange interface, 80 mm bore, 140 mm stroke, and G3/8 port (available in PT, G, or NPT threads). If you need position sensing, this non-magnetic SKU cannot accept switches; you must select an SAI80X140FAS instead. Sizing both ways: if 2513 N push at 0.5 MPa is insufficient, step up to a 100 mm bore (3927 N); if oversized, a 63 mm bore provides 1559 N. A plain cylinder drifts on air loss—the cushion only decelerates—so for load holding use an external pilot check valve, or specify the SAIL or BSAI lock variant. If your stroke exceeds 300 mm, add external guide rails to prevent rod bending and side-load wear.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI80X140FA
- ✓ 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 SI80X140FA FAQ
Yes, the SI80X140FA is discontinued. The direct replacement is the SAI80X140FA. It shares the identical ISO 15552 FA flange mounting interface, 80 mm bore, 140 mm stroke, 4523 N output force at 0.9 MPa, and G3/8 port size, dropping straight into existing machinery.
The 80 mm bore uses a G3/8 air port. At 0.5 MPa it provides 2513 N push and 2268 N pull; at 0.7 MPa it provides 3518 N push; at 0.9 MPa it provides 4523 N push. The theoretical maximum force is 513 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI80X140FA
Send us the quantity and destination. We confirm price, stock and lead time on the SAI80X140FA replacement — usually within 7-8 hours.