This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI80X125FTC, 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 SI80X125FTC
The AirTAC SI80 Standard Air Cylinder SI80X125FTC is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø80mm bore and 125mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI80X125FTC, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ80 mm
- Stroke125 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI80X125FTC
- 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 SI80X125FTC
The AirTAC SI80X125FTC is a discontinued double-acting ISO 15552 profile cylinder with an 80mm bore and 125mm stroke. It delivers 2513N push and 2268N pull at 0.5MPa through a G3/8 port. The direct replacement is the SAI80X125FTC, matching the bore, stroke, force, port, and FTC trunnion mount exactly.
The SAI upgrade features two Y-shaped one-way piston seals for low start-up pressure and long life. Note this SKU lacks a magnet so it cannot take a sensor.
Airtac SI80 Standard Air Cylinder SI80X125FTC Technical Specifications
| Model | Airtac SI80 Standard Air Cylinder SI80X125FTC |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI80X125FTC |
| Bore size | Ø80 mm |
| Stroke | 125 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 SAI80X125FTC 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 SAI80X125FTC 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 SI80X125FTC
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 80 | Bore size in mm. |
| ×125 | 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 SI80X125FTC Is Used
Press Clamping
Secures heavy sheet metal stampings in automated press lines, utilizing the 2513N push force at 0.5MPa to hold parts firmly during machining operations.
Pallet Diverting
Actuates heavy-duty routing gates on high-throughput packaging conveyors, easily handling side loads with its robust 25mm piston rod and 125mm stroke.
Replacing the Airtac SI80 Standard Air Cylinder SI80X125FTC with the SAI80X125FTC
To replace the SI80X125FTC, order the SAI80X125FTC. Confirm the ISO 15552 FTC trunnion interface, 80mm bore, 125mm stroke, G3/8 port (PT/G/NPT thread), and M20x1.5 rod thread. Since this SKU has no -S magnet, it cannot accept CS1-B/DS1-B switches. For sizing, the neighbouring 63mm bore yields 1559N push at 0.5MPa, while the 100mm bore yields 3927N. 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 → SAI80X125FTC
- ✓ 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 SI80X125FTC FAQ
Yes, the AirTAC SI80X125FTC is discontinued and end-of-life. The direct replacement is the SAI80X125FTC. It is dimensionally interchangeable per ISO 15552, retaining the same 80mm bore, 125mm stroke, G3/8 port, and FTC trunnion mounting interface to fit existing fixtures perfectly.
The 80mm bore uses a G3/8 air port and a 25mm rod with an M20x1.5 thread. Force output is 2513N push and 2268N pull at 0.5MPa, 3518N push at 0.7MPa, 4523N push at 0.9MPa, and a theoretical maximum of 513kgf at 1.0MPa. Operating speed is 30-800mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAI80X125FTC
Send us the quantity and destination. We confirm price, stock and lead time on the SAI80X125FTC replacement — usually within 7-8 hours.