This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI80AX260, 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 SI80AX260
The AirTAC SI80 Standard Air Cylinder SI80AX260 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø80mm bore and 260mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI80AX260, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ80 mm
- Stroke260 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI80AX260
- 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 SI80AX260
The AirTAC SI80AX260 is a discontinued double-acting ISO 15552 profile cylinder with an 80 mm bore and 260 mm stroke. It delivers 2513 N push and 2268 N pull at 0.5 MPa, using a G3/8 port and an M20x1.5 rod thread. The direct replacement is the SAI80AX260, matching the bore, stroke, force, port and ISO 15552 mounting interface for existing fixtures.
The SAI upgrade features a two Y-shaped one-way piston seal for low start-up pressure and long life. It also adds SAIL, SAIF and BSAI variants the SI lacked. This SKU has no magnet (-S) so it cannot take a sensor, and uses a SUS420J2 stainless rod (-A).
Airtac SI80 Standard Air Cylinder SI80AX260 Technical Specifications
| Model | Airtac SI80 Standard Air Cylinder SI80AX260 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI80AX260 |
| Bore size | Ø80 mm |
| Stroke | 260 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 SAI80AX260 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 SAI80AX260 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 SI80AX260
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 80 | Bore size in mm. |
| ×260 | 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 SI80AX260 Is Used
Mid-Tonnage Pressing
Applies the 3518 N push at 0.7 MPa for securing components and light assembly pressing tasks in automated cells.
Pallet Diversion
Drives 260 mm stroke diverters or stops on heavy-duty material handling lines using the G3/8 air supply.
Vertical Lifting
Hoists compact loads up to the 128 kg safe vertical limit, benefiting from the SUS420J2 stainless rod.
Replacing the Airtac SI80 Standard Air Cylinder SI80AX260 with the SAI80AX260
To replace the SI80AX260, order the SAI80AX260 to keep the identical ISO 15552 mounting interface, 80 mm bore, 260 mm stroke, G3/8 port and M20x1.5 thread. Confirm your mounting accessory (LB, FA, TC, etc.) and note this non-magnetic SKU cannot fit a CS1-B/DS1-B switch. For sizing both ways: a 63 mm bore gives 1559 N [email protected], while a 100 mm bore gives 3927 N. A plain cylinder drifts on air loss; for load holding use an external pilot check valve or the SAIL/BSAI lock variant. With a 260 mm stroke, ensure guide alignment to prevent rod bending side-loads.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI80AX260
- ✓ 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 SI80AX260 FAQ
Yes, the SI80AX260 is discontinued. The direct replacement is the SAI80AX260. It offers the exact same ISO 15552 mounting interface, 80 mm bore, 260 mm stroke, output force, G3/8 port and accessories, fitting existing fixtures perfectly.
It delivers 2513 N push and 2268 N pull at 0.5 MPa, 3518 N push at 0.7 MPa, 4523 N at 0.9 MPa, and a max force of 513 kgf at 1.0 MPa. Operating pressure is 0.15-1.0 MPa, speed is 30-800 mm/s, and it uses a G3/8 port.
Related AirTAC SAI Cylinders
Request a Quote for the SAI80AX260
Send us the quantity and destination. We confirm price, stock and lead time on the SAI80AX260 replacement — usually within 7-8 hours.