This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI80X75FTC, 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 SI80X75FTC
The AirTAC SI80 Standard Air Cylinder SI80X75FTC 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 SAI80X75FTC, 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 → SAI80X75FTC
- 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 SI80X75FTC
The AirTAC SI80X75FTC is a discontinued double-acting ISO 15552 profile cylinder with an 80 mm bore, delivering 2513 N push and 2268 N pull at 0.5 MPa. AirTAC replaced this end-of-life unit with the SAI80X75FTC. This current-production direct maintains the exact same FTC trunnion mounting, 75 mm stroke, G3/8 port, and output force, fitting existing fixtures seamlessly.
The SAI upgrade introduces a refined piston seal featuring two Y-shaped one-way elements for extended life and lower start-up pressure. Because this specific SI SKU lacks the -S magnet, it cannot accept a position switch.
Airtac SI80 Standard Air Cylinder SI80X75FTC Technical Specifications
| Model | Airtac SI80 Standard Air Cylinder SI80X75FTC |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI80X75FTC |
| 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 SAI80X75FTC 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 SAI80X75FTC 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 SI80X75FTC
| 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 SI80X75FTC Is Used
Package Diversion
Drives robust routing gates on high-throughput packaging lines, utilizing the 75 mm stroke to cleanly redirect heavy cartons without overshooting.
Clamp Actuation
Secures large workpieces during heavy machining operations, providing 2513 N of holding push at 0.5 MPa to prevent deflection under cutting loads.
Pallet Stops
Functions as a high-impact stop mechanism on roller conveyors, absorbing the momentum of incoming pallets via its adjustable 36 mm air cushions.
Replacing the Airtac SI80 Standard Air Cylinder SI80X75FTC with the SAI80X75FTC
To replace the SI80X75FTC, order the SAI80X75FTC. Verify the ISO 15552 FTC trunnion interface, 80 mm bore, 75 mm stroke, G3/8 port, and M20x1.5 rod thread. Since this SKU has no magnet, it cannot support sensing; if switches are needed, select an SAI equivalent with the S suffix for CS1-B or DS1-B compatibility. If you need to size down, a 63 mm bore yields 1559 N push at 0.5 MPa; sizing up to 100 mm provides 3927 N. Note that a standard cylinder drifts without live air, as the cushion only decelerates. For load holding, use an external pilot check valve or explore the SAIL or BSAI lock variants.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI80X75FTC
- ✓ 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 SI80X75FTC FAQ
Yes, the SI80X75FTC is discontinued. The direct replacement is the SAI80X75FTC. It is dimensionally interchangeable per ISO 15552, retaining the identical 80 mm bore, 75 mm stroke, G3/8 port, and FTC trunnion mounting interface.
This double-acting cylinder features a G3/8 air port and an M20x1.5 rod thread. It delivers 2513 N push and 2268 N pull at 0.5 MPa, 3518 N push at 0.7 MPa, and a theoretical maximum force of 513 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI80X75FTC
Send us the quantity and destination. We confirm price, stock and lead time on the SAI80X75FTC replacement — usually within 7-8 hours.