This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI80X75SFTC, 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 SI80X75SFTC
The AirTAC SI80 Standard Air Cylinder SI80X75SFTC is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø80mm bore and 75mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI80X75SFTC, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ80 mm
- Stroke75 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI80X75SFTC
- 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 SI80X75SFTC
The AirTAC SI80X75SFTC is a discontinued double-acting ISO 15552 profile cylinder featuring an extruded aluminum barrel, a 75 mm stroke, and a G3/8 port. Delivering 2513 N of push force at 0.5 MPa, it is replaced by the SAI80X75SFTC. This direct successor shares the exact same ISO 15552 mounting interface, bore, stroke, force, and FTC trunnion mount.
The SAI upgrade introduces a refined piston seal with two Y-shaped one-way elements for low start-up pressure and extended life. For applications needing load holding, the SAI family adds the SAIL lock and BSAI clamp-lock variants.
Airtac SI80 Standard Air Cylinder SI80X75SFTC Technical Specifications
| Model | Airtac SI80 Standard Air Cylinder SI80X75SFTC |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI80X75SFTC |
| Bore size | Ø80 mm |
| Stroke | 75 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 SAI80X75SFTC 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 SAI80X75SFTC 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 SI80X75SFTC
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 80 | Bore size in mm. |
| ×75 | 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 SI80X75SFTC Is Used
Package Diversion
Drives sorting pop-up arms on packaging conveyors, utilizing the 75 mm stroke to reroute boxes efficiently.
Clamp Actuation
Provides 2513 N of push force at 0.5 MPa to secure heavy steel plates during machining operations.
Pallet Stops
Controls heavy pallet movement on roller lines, using the FTC mount to handle significant side loads.
Replacing the Airtac SI80 Standard Air Cylinder SI80X75SFTC with the SAI80X75SFTC
To replace the SI80X75SFTC, order the SAI80X75SFTC. Verify the ISO 15552 interface, 80 mm bore, 75 mm stroke, G3/8 port, and FTC trunnion mount. The -S suffix means a piston magnet is present for CS1-B/DS1-B sensors, which the SAI replaces with current AirTAC switches. If sizing up, the 100 mm bore offers more force; if sizing down, the 63 mm bore provides 1559 N. Note that a plain cylinder drifts on air loss—the cushion only decelerates. For secure load holding, use an external rod lock, a pilot check valve, or the SAIL/BSAI lock variant.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI80X75SFTC
- ✓ 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 SI80X75SFTC FAQ
Yes, the AirTAC SI80X75SFTC is discontinued. The direct replacement is the SAI80X75SFTC. It shares the same ISO 15552 mounting interface, 80 mm bore, 75 mm stroke, output force, G3/8 port, and FTC trunnion mount, fitting directly into existing fixtures.
This double-acting cylinder has a 25 mm rod, M20x1.5 thread, G3/8 port, and operates at 30-800 mm/s. Force ratings are: push 2513 N and pull 2268 N at 0.5 MPa, push 3518 N at 0.7 MPa, and a theoretical maximum of 513 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI80X75SFTC
Send us the quantity and destination. We confirm price, stock and lead time on the SAI80X75SFTC replacement — usually within 7-8 hours.