This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI80X300SFTC, 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 SI80X300SFTC
The AirTAC SI80 Standard Air Cylinder SI80X300SFTC is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø80mm bore and 300mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI80X300SFTC, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ80 mm
- Stroke300 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI80X300SFTC
- 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 SI80X300SFTC
The AirTAC SI80X300SFTC is a discontinued double-acting ISO 15552 profile cylinder with an 80 mm bore and 300 mm stroke. Delivering 2513 N push force at 0.5 MPa, it is superseded by the SAI80X300SFTC. This direct replacement retains the exact FTC trunnion mount, G3/8 port, and output force.
The SAI upgrade features a two Y-shaped one-way piston seal for low start-up pressure. The SAI family adds SAIL and BSAI lock variants the SI lacked.
Airtac SI80 Standard Air Cylinder SI80X300SFTC Technical Specifications
| Model | Airtac SI80 Standard Air Cylinder SI80X300SFTC |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI80X300SFTC |
| Bore size | Ø80 mm |
| Stroke | 300 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 SAI80X300SFTC 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 SAI80X300SFTC 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 SI80X300SFTC
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 80 | Bore size in mm. |
| ×300 | 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 SI80X300SFTC Is Used
Pallet Diversion
Shifts heavy pallets laterally across conveyor lanes using the 2513 N push force at 0.5 MPa.
Vertical Lift Gate
Raises material handling gates; the 300 mm stroke accommodates the required clearance travel.
Press Ejection
Ejects formed metal components from a press bed, relying on the 36 mm adjustable air cushions.
Replacing the Airtac SI80 Standard Air Cylinder SI80X300SFTC with the SAI80X300SFTC
To replace the SI80X300SFTC, order the SAI80X300SFTC keeping the 80 mm bore, 300 mm stroke, G3/8 port, and FTC trunnion mount. The -S magnet works with CS1-B/DS1-B sensors, though the SAI uses current AirTAC switches. For sizing, a 63 mm bore yields 1559 N [email protected], while a 100 mm bore yields 3927 N. Note: at 300 mm stroke, use an external guide to prevent rod bending from side loads. Plain cylinders drift on air loss; for load holding, use the SAIL lock variant or an external pilot check valve.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI80X300SFTC
- ✓ 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 SI80X300SFTC FAQ
Yes, the SI80X300SFTC is discontinued. The direct replacement is the SAI80X300SFTC, which shares the same ISO 15552 mounting interface, 80 mm bore, 300 mm stroke, G3/8 port, and FTC trunnion mount.
It features a G3/8 air port and provides 2513 N push / 2268 N pull at 0.5 MPa, 3518 N push at 0.7 MPa, and a theoretical max of 513 kgf at 1.0 MPa. The speed range is 30-800 mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAI80X300SFTC
Send us the quantity and destination. We confirm price, stock and lead time on the SAI80X300SFTC replacement — usually within 7-8 hours.