This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI80X120, 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 SI80X120
The AirTAC SI80 Standard Air Cylinder SI80X120 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø80mm bore and 120mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI80X120, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ80 mm
- Stroke120 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI80X120
- 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 SI80X120
The AirTAC SI80X120 is a discontinued double-acting ISO 15552 profile cylinder with an 80mm bore and 120mm stroke, delivering 2513N push force at 0.5MPa via a G3/8 port. The direct replacement is the SAI80X120, matching the exact interface, force, and mounting.
The SAI upgrade features two Y-shaped one-way piston seals for low start-up pressure and long life. It also adds SAIL, SAIF, and BSAI variants the SI lacked. This no-magnet SKU cannot take a sensor.
Airtac SI80 Standard Air Cylinder SI80X120 Technical Specifications
| Model | Airtac SI80 Standard Air Cylinder SI80X120 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI80X120 |
| Bore size | Ø80 mm |
| Stroke | 120 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 SAI80X120 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 SAI80X120 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 SI80X120
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 80 | Bore size in mm. |
| ×120 | 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 SI80X120 Is Used
Press Fit Operations
Drives medium-tonnage press duties with 2513N push force at 0.5MPa, safely fitting bearings or pins with a 1508N working load margin.
Pallet Diversion
Actuates heavy routing gates or stops on packaging lines, using the 120mm stroke to reposition full pallets smoothly.
Replacing the Airtac SI80 Standard Air Cylinder SI80X120 with the SAI80X120
To replace the SI80X120, order the SAI80X120 and confirm the ISO 15552 mounting interface, G3/8 port, and M20x1.5 rod thread. This SKU lacks a magnet (-S), so it cannot accept CS1-B/DS1-B sensors. If you need to hold a load without live air, the cushion only decelerates; use an external rod lock, pilot check valve, or the SAIL/BSAI lock variant. For sizing, the 80mm bore yields 2513N push at 0.5MPa; dropping to a 63mm bore gives 1559N, while an 80mm at 0.7MPa yields 3518N.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI80X120
- ✓ 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 SI80X120 FAQ
Yes, the AirTAC SI80X120 is discontinued. The direct replacement is the SAI80X120, which shares the same ISO 15552 mounting interface, 80mm bore, 120mm stroke, output force, and G3/8 port size.
It features a G3/8 air port and delivers 2513N push / 2268N pull at 0.5MPa, 3518N push at 0.7MPa, 4523N push at 0.9MPa, and a maximum theoretical force of 513kgf at 1.0MPa.
Request a Quote for the SAI80X120
Send us the quantity and destination. We confirm price, stock and lead time on the SAI80X120 replacement — usually within 7-8 hours.