This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI80X325, 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 SI80X325
The AirTAC SI80 Standard Air Cylinder SI80X325 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø80mm bore and 325mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI80X325, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ80 mm
- Stroke325 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI80X325
- 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 SI80X325
The AirTAC SI80X325 is a discontinued double-acting ISO 15552 profile cylinder with an 80mm bore and 325mm stroke. Delivering 2513N push force at 0.5MPa via a G3/8 port, it is replaced by the SAI80X325. This direct upgrade shares the exact interface, bore, stroke, force and mounting.
The SAI features an upgraded piston seal with two Y-shaped one-way elements for low start-up pressure. For sensing, this no-S SKU cannot take a magnetic switch. The SAI family also adds SAIL, SAIF and BSAI lock variants the SI lacked.
Airtac SI80 Standard Air Cylinder SI80X325 Technical Specifications
| Model | Airtac SI80 Standard Air Cylinder SI80X325 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI80X325 |
| Bore size | Ø80 mm |
| Stroke | 325 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 SAI80X325 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 SAI80X325 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 SI80X325
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 80 | Bore size in mm. |
| ×325 | 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 SI80X325 Is Used
Pallet Diversion
Actuates heavy lane diverters on packaging lines, using the 2513N thrust at 0.5MPa to push loaded pallets firmly onto secondary tracks.
Press Ejection
Ejects formed metal components from hydraulic presses, relying on the 36mm adjustable air cushions to decelerate the 25mm rod smoothly.
Replacing the Airtac SI80 Standard Air Cylinder SI80X325 with the SAI80X325
To replace the SI80X325, order the SAI80X325. Confirm the ISO 15552 mounting interface, 80mm bore, 325mm stroke, G3/8 port (PT/G/NPT) and mounting accessory. Because this SKU lacks the -S magnet, it cannot accept a sensor; if position feedback is needed, select an SAI80X325S instead. Sizing both ways: a 63mm bore yields 1559N push at 0.5MPa, while a 100mm bore yields 3927N. A plain cylinder does not hold load on air loss; the cushion only decelerates. For load holding, use an external rod lock, pilot check valve, or the SAIL/BSAI lock variant. With a 325mm stroke, use an external guide to prevent rod bending and side-load wear.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI80X325
- ✓ 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 SI80X325 FAQ
Yes, the SI80X325 is discontinued. The direct replacement is the SAI80X325. It shares the same ISO 15552 mounting interface, 80mm bore, 325mm stroke, output force, G3/8 port and accessories, fitting existing fixtures perfectly.
The SI80X325 features a G3/8 port and an M20x1.5 rod 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. Speed is 30-800mm/s.
Request a Quote for the SAI80X325
Send us the quantity and destination. We confirm price, stock and lead time on the SAI80X325 replacement — usually within 7-8 hours.