This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI80X615, 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 SI80X615
The AirTAC SI80 Standard Air Cylinder SI80X615 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 SAI80X615, 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 → SAI80X615
- 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 SI80X615
The AirTAC SI80X615 is a discontinued double-acting ISO 15552 profile cylinder with an 80mm bore and 615mm stroke. Delivering 2513N push force at 0.5MPa via a G3/8 port, it is replaced by the SAI80X615. This direct upgrade shares identical ISO 15552 mounting dimensions, bore, stroke, force and accessories.
The SAI features an upgraded piston seal using two Y-shaped one-way elements for low start-up pressure and long life. Without a -S suffix, this SKU cannot take a magnetic switch.
Airtac SI80 Standard Air Cylinder SI80X615 Technical Specifications
| Model | Airtac SI80 Standard Air Cylinder SI80X615 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI80X615 |
| 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 SAI80X615 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 SAI80X615 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 SI80X615
| 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 SI80X615 Is Used
Long-Stroke Diversion
Pushes heavy pallets laterally across a transfer line using the 615mm stroke and 2513N force at 0.5 MPa.
Press Ejection
Ejects formed metal parts from a press fixture, relying on adjustable 36mm end cushions to decelerate the 80mm bore.
Replacing the Airtac SI80 Standard Air Cylinder SI80X615 with the SAI80X615
To replace the SI80X615, order the SAI80X615 and confirm the ISO 15552 mounting fixture, 80mm bore, 615mm stroke, G3/8 port (PT/G/NPT thread) and mounting accessory match. Being a non-magnet SKU, it cannot accept CS1-B/DS1-B sensors. For sizing alternatives, the neighbouring 63mm bore yields 1559N push at 0.5MPa, while the 100mm bore yields 3927N. Because this is a 615mm stroke, use external guides to prevent rod bending and side-load damage. A plain cylinder drifts on air loss; for load holding, use an external rod lock, pilot check valve, or the SAIL/BSAI lock variants.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI80X615
- ✓ 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 SI80X615 FAQ
Yes, the SI80X615 is discontinued. The direct replacement is the SAI80X615. It is dimensionally interchangeable per ISO 15552, retaining the same 80mm bore, 615mm stroke, G3/8 port and mounting interface.
The 80mm bore uses a G3/8 port. It generates 2513N push and 2268N pull at 0.5 MPa, 3518N push at 0.7 MPa, 4523N push at 0.9 MPa, and a theoretical max of 513 kgf at 1.0 MPa. Operating speed is 30-800 mm/s.
Request a Quote for the SAI80X615
Send us the quantity and destination. We confirm price, stock and lead time on the SAI80X615 replacement — usually within 7-8 hours.