This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI80X730S, 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 SI80X730S
The AirTAC SI80 Standard Air Cylinder SI80X730S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø80mm bore and 730mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI80X730S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ80 mm
- Stroke730 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI80X730S
- 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 SI80X730S
The AirTAC SI80X730S is a discontinued double-acting ISO 15552 profile cylinder with an extruded aluminum barrel. Built for a 80 mm bore and 730 mm stroke, it delivers 2513 N push force at 0.5 MPa through a G3/8 port. AirTAC replaced this legacy unit with the SAI80X730S, a direct upgrade sharing the exact ISO 15552 mounting interface, bore, stroke, output force, and port size.
The SAI80X730S features an upgraded piston seal with two Y-shaped one-way elements for low start-up pressure and long life. The SI -S magnet supports legacy CS1-B/DS1-B sensors, while the SAI family adds SAIL lock, SAIF valve, and BSAI clamp-lock variants the SI line lacked.
Airtac SI80 Standard Air Cylinder SI80X730S Technical Specifications
| Model | Airtac SI80 Standard Air Cylinder SI80X730S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI80X730S |
| Bore size | Ø80 mm |
| Stroke | 730 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 SAI80X730S 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 SAI80X730S 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 SI80X730S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 80 | Bore size in mm. |
| ×730 | 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 SI80X730S Is Used
Long-Stroke Diversion
Pushes heavy pallets across 730 mm gaps on packaging lines using the 2513 N thrust at 0.5 MPa.
Vertical Material Lift
Raises 128 kg loads in two-to-one safety margin setups, relying on the G3/8 port for rapid fill.
Press Ejection
Cycles stamping presses with adjustable 36 mm air cushions decelerating the 25 mm rod at ends.
Replacing the Airtac SI80 Standard Air Cylinder SI80X730S with the SAI80X730S
To replace the SI80X730S, order the SAI80X730S and confirm the ISO 15552 mounting fixture, 80 mm bore, 730 mm stroke, G3/8 port, and -S magnet. Sizing both ways: a 63 mm bore yields 1559 N push at 0.5 MPa, while a 100 mm bore yields 3927 N. Because this is a 730 mm stroke, use external guides to prevent rod bending and side-load wear. 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 variant.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI80X730S
- ✓ 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 SI80X730S FAQ
Yes, the SI80X730S is discontinued. The direct replacement is the SAI80X730S. It shares the identical ISO 15552 mounting interface, 80 mm bore, 730 mm stroke, output force, and G3/8 port, fitting existing fixtures perfectly.
The 80 mm bore uses a G3/8 port and delivers 2513 N push and 2268 N pull at 0.5 MPa. At 0.7 MPa push is 3518 N, and 4523 N at 0.9 MPa. The theoretical max force is 513 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI80X730S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI80X730S replacement — usually within 7-8 hours.