This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI80X615S, 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 SI80X615S
The AirTAC SI80 Standard Air Cylinder SI80X615S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø80mm bore and 615mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI80X615S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ80 mm
- Stroke615 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI80X615S
- 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 SI80X615S
The AirTAC SI80X615S is a discontinued double-acting ISO 15552 profile cylinder with an extruded aluminum barrel. It delivers 2513 N push force at 0.5 MPa through an 80 mm bore. Because this SI unit is end-of-life, you should order the direct replacement: the SAI80X615S. It matches the original 615 mm stroke, 4523 N push at 0.9 MPa, G3/8 port, and ISO 15552 mounting interface.
The SAI upgrade features a new piston seal with two Y-shaped one-way elements for low start-up pressure and long life. The -S magnet works with legacy CS1-B/DS1-B sensors, while the SAI family adds BSAI clamp-lock variants the SI lacked.
Airtac SI80 Standard Air Cylinder SI80X615S Technical Specifications
| Model | Airtac SI80 Standard Air Cylinder SI80X615S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI80X615S |
| Bore size | Ø80 mm |
| Stroke | 615 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 SAI80X615S 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 SAI80X615S 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 SI80X615S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 80 | Bore size in mm. |
| ×615 | 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 SI80X615S Is Used
Long-Stroke Diversion
Pushes large packages across transfer lines using the 615 mm stroke, relying on external guides to prevent rod bending during the traverse.
Heavy Fixture Clamping
Secures heavy fabrication parts in welding cells, taking advantage of the 2513 N push force at 0.5 MPa operating pressure.
Replacing the Airtac SI80 Standard Air Cylinder SI80X615S with the SAI80X615S
To replace the SI80X615S, order the SAI80X615S and confirm the ISO 15552 mounting interface, 80 mm bore, 615 mm stroke, G3/8 port, and your specific mounting accessory (like TC trunnion or LB foot). The -S magnet means it accepts CS1-B/DS1-B switches. If you need to size both ways, neighboring bores are 63 mm (1559 N push at 0.5 MPa) and 100 mm (3927 N push at 0.5 MPa). Because the 615 mm stroke is long, use an external guide to prevent rod bending and side-load damage. A plain cylinder drifts without live air; for load holding, use an external pilot check valve or the SAIL/BSAI lock variant.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI80X615S
- ✓ 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 SI80X615S FAQ
Yes, the AirTAC SI80X615S is discontinued. The direct replacement is the SAI80X615S. It is dimensionally interchangeable per ISO 15552, keeping the same 80 mm bore, 615 mm stroke, 2513 N force at 0.5 MPa, G3/8 port, and mounting interface.
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, the port is G3/8, and the rod thread is M20x1.5.
Related AirTAC SAI Cylinders
Request a Quote for the SAI80X615S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI80X615S replacement — usually within 7-8 hours.