This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI80X80SFA, 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 SI80X80SFA
The AirTAC SI80 Standard Air Cylinder SI80X80SFA is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø80mm bore and 80mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI80X80SFA, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ80 mm
- Stroke80 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI80X80SFA
- 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 SI80X80SFA
The AirTAC SI80X80SFA is a discontinued double-acting ISO 15552 profile cylinder with an 80mm bore and 80mm stroke. It delivers 2513N push force at 0.5MPa via a G3/8 port. The direct replacement is the SAI80X80SFA, which shares identical ISO 15552 mounting interface dimensions, bore, stroke, output force, and FA flange accessory.
The SAI upgrade features a modernized piston seal with two Y-shaped one-way elements for low start-up pressure and long life. This SI unit includes a magnet for CS1-B/DS1-B sensors; the SAI family also adds SAIL lock, SAIF valve, and BSAI clamp-lock variants the original line lacked.
Airtac SI80 Standard Air Cylinder SI80X80SFA Technical Specifications
| Model | Airtac SI80 Standard Air Cylinder SI80X80SFA |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI80X80SFA |
| Bore size | Ø80 mm |
| Stroke | 80 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 SAI80X80SFA 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 SAI80X80SFA 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 SI80X80SFA
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 80 | Bore size in mm. |
| ×80 | 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 SI80X80SFA Is Used
Press Fit Assembly
Drives bearings or pins into housings with 2513N thrust at 0.5MPa, using the 80mm stroke for compact press cycles.
Pallet Diverting
Actuates routing gates on heavy material handling lines, utilizing the FA flange mount to stabilize 128kg dynamic loads.
Packaging Lifts
Raises filled cartons or product stacks, where the 80mm stroke and adjustable 36mm cushions ensure smooth end-of-travel deceleration.
Replacing the Airtac SI80 Standard Air Cylinder SI80X80SFA with the SAI80X80SFA
To replace the SI80X80SFA, order the SAI80X80SFA. Verify the ISO 15552 interface, 80mm bore, 80mm stroke, G3/8 port, and FA flange mounting. The -S magnet equates to legacy CS1-B/DS1-B switches, while the SAI uses current AirTAC sensors. Sizing options: step down to a 63mm bore for 1559N push at 0.5MPa, or up to 100mm for 3927N. Note that a plain cylinder drifts on air loss—the cushion only decelerates. For load holding, use an external rod lock, pilot check valve, or the SAIL/BSAI lock variants.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI80X80SFA
- ✓ 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 SI80X80SFA FAQ
Yes, the SI80X80SFA is discontinued. The direct replacement is the SAI80X80SFA. It is dimensionally interchangeable per ISO 15552, retaining the same 80mm bore, 80mm stroke, force, G3/8 port, and FA flange mounting.
The bore is 80mm with a G3/8 port. Force output is 2513N push and 2268N pull at 0.5MPa, 3518N push at 0.7MPa, 4523N push at 0.9MPa, and a theoretical max of 513kgf at 1.0MPa. Speed is 30-800mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAI80X80SFA
Send us the quantity and destination. We confirm price, stock and lead time on the SAI80X80SFA replacement — usually within 7-8 hours.