This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI80X245S, 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 SI80X245S
The AirTAC SI80 Standard Air Cylinder SI80X245S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø80mm bore and 245mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI80X245S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ80 mm
- Stroke245 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI80X245S
- 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 SI80X245S
The AirTAC SI80X245S is a discontinued double-acting ISO 15552 profile cylinder with an extruded aluminum barrel, adjustable air cushions, and a built-in piston magnet for CS1-B/DS1-B switches. Delivering 2513 N push force at 0.5 MPa through its G3/8 port, it is replaced by the SAI80X245S. This direct successor shares the exact bore, stroke, and mounting interface.
The SAI upgrade features a two Y-shaped one-way piston seal for low start-up pressure and long life. The SAI family also adds SAIL, SAIF, and BSAI lock variants the SI lacked.
Airtac SI80 Standard Air Cylinder SI80X245S Technical Specifications
| Model | Airtac SI80 Standard Air Cylinder SI80X245S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI80X245S |
| Bore size | Ø80 mm |
| Stroke | 245 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 SAI80X245S 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 SAI80X245S 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 SI80X245S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 80 | Bore size in mm. |
| ×245 | 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 SI80X245S Is Used
Pallet Diversion
Actuates heavy lane guides to divert loaded pallets on a packaging line, utilizing the 245 mm stroke to clear the workflow path.
Press Ejection
Pushes completed metal stampings out of a hydraulic press, using the 2513 N push force at 0.5 MPa to reliably clear the die.
Replacing the Airtac SI80 Standard Air Cylinder SI80X245S with the SAI80X245S
To replace the SI80X245S, order the SAI80X245S, confirming the ISO 15552 interface, 80 mm bore, 245 mm stroke, G3/8 port, and mounting accessory. The -S magnet means it accepts legacy CS1-B/DS1-B sensors (the SAI uses current AirTAC switches). If you need more force, the 100 mm bore offers 3927 N push at 0.5 MPa; if less is needed, the 63 mm bore provides 1559 N. Remember, a plain cylinder drifts without live air—the cushion only decelerates. For load holding, use an external rod lock, pilot check valve, or the SAIL/BSAI lock variant.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI80X245S
- ✓ 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 SI80X245S FAQ
Yes, the SI80X245S is discontinued. The direct replacement is the SAI80X245S. It shares the same ISO 15552 mounting interface, 80 mm bore, 245 mm stroke, output force, and G3/8 port, fitting existing fixtures perfectly.
The 80 mm bore provides 2513 N push and 2268 N pull at 0.5 MPa, 3518 N push at 0.7 MPa, 4523 N push at 0.9 MPa, and a theoretical max of 513 kgf at 1.0 MPa. Operating speed is 30-800 mm/s, with a 36 mm adjustable air cushion at each end.
Related AirTAC SAI Cylinders
Request a Quote for the SAI80X245S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI80X245S replacement — usually within 7-8 hours.