This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI80X580S, 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 SI80X580S
The AirTAC SI80 Standard Air Cylinder SI80X580S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø80mm bore and 580mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI80X580S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ80 mm
- Stroke580 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI80X580S
- 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 SI80X580S
The AirTAC SI80X580S is a discontinued double-acting ISO 15552 profile cylinder with an 80 mm bore and 580 mm stroke. It produces 2513 N of push force and 2268 N of pull force at 0.5 MPa, operating through a G3/8 port. AirTAC replaced this legacy unit with the SAI80X580S, a direct upgrade retaining the exact same mounting interface, output force, and dimensions.
The SAI replacement features an upgraded piston seal utilizing two Y-shaped one-way elements for lower start-up pressure and extended life. This -S model includes a piston magnet for legacy CS1-B/DS1-B sensors, and the SAI family introduces lock variants like the SAIL and BSAI that the original SI line lacked.
Airtac SI80 Standard Air Cylinder SI80X580S Technical Specifications
| Model | Airtac SI80 Standard Air Cylinder SI80X580S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI80X580S |
| Bore size | Ø80 mm |
| Stroke | 580 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 SAI80X580S 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 SAI80X580S 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 SI80X580S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 80 | Bore size in mm. |
| ×580 | 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 SI80X580S Is Used
Long-Stroke Material Transfer
Pushes heavy pallets along an assembly line using the 2513 N push force at 0.5 MPa, with external guides supporting the 580 mm stroke.
Pallet Positioning Stop
Deploys a 580 mm stop pin to halt heavy inbound pallets, relying on the 80 mm bore to absorb kinetic impact via adjustable cushions.
Replacing the Airtac SI80 Standard Air Cylinder SI80X580S with the SAI80X580S
To replace the SI80X580S, order the SAI80X580S and confirm the ISO 15552 mounting fixture, 80 mm bore, 580 mm stroke, G3/8 port, and M20x1.5 rod thread. Because this is a 580 mm stroke, add external guides to prevent rod bending and side-load wear. For sizing alternatives, dropping to a 63 mm bore yields 1559 N push at 0.5 MPa, while stepping up to a 100 mm bore provides 3927 N. A plain cylinder drifts on air loss, so for load holding use an external pilot check valve or the SAIL/BSAI lock variant. The -S suffix means a magnet is present for CS1-B/DS1-B switches.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI80X580S
- ✓ 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 SI80X580S FAQ
Yes, the SI80X580S is discontinued. The direct replacement is the AirTAC SAI80X580S. It shares the identical ISO 15552 mounting interface, 80 mm bore, 580 mm stroke, G3/8 port, and output force, fitting directly into existing fixtures.
The G3/8 port feeds a 25 mm rod delivering 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 maximum force is 513 kgf at 1.0 MPa, with an operating speed of 30-800 mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAI80X580S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI80X580S replacement — usually within 7-8 hours.