This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI80BX290, 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 SI80BX290
The AirTAC SI80 Standard Air Cylinder SI80BX290 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø80mm bore and 290mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI80BX290, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ80 mm
- Stroke290 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI80BX290
- 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 SI80BX290
The AirTAC SI80BX290 is a discontinued double-acting ISO 15552 profile cylinder with an 80mm bore and 290mm stroke. Delivering 2513N push force at 0.5MPa, it is replaced by the SAI80BX290. This direct upgrade shares the exact G3/8 port, M20x1.5 thread, and mounting interface.
The SAI80BX290 upgrades the piston seal to two Y-shaped one-way elements for lower start-up pressure. This specific SKU uses a SUS304 stainless rod (-B) but lacks a magnet, so it cannot take CS1-B/DS1-B sensors.
Airtac SI80 Standard Air Cylinder SI80BX290 Technical Specifications
| Model | Airtac SI80 Standard Air Cylinder SI80BX290 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI80BX290 |
| Bore size | Ø80 mm |
| Stroke | 290 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 SAI80BX290 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 SAI80BX290 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 SI80BX290
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 80 | Bore size in mm. |
| ×290 | 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 SI80BX290 Is Used
Stainless Rod Actuation
Ideal for packaging lines requiring the SUS304 corrosion-resistant rod option to withstand washdown environments.
Mid-Stroke Pressing
Provides 2513N push force at 0.5MPa for pressing components securely over its 290mm travel range.
Material Diversion
Handles heavy diverting tasks on conveyors, with the 36mm adjustable cushion absorbing end-of-stroke impacts.
Replacing the Airtac SI80 Standard Air Cylinder SI80BX290 with the SAI80BX290
To replace the SI80BX290, order the SAI80BX290. Verify the ISO 15552 mounting, 290mm stroke, G3/8 port, and SUS304 rod (-B). Because this SKU has no magnet (-S), it cannot accept position sensors. For load holding, note the air cushion only decelerates; use an external rod lock or pilot check valve for fail-safe holding. At 290mm stroke, guide side-loads to prevent rod bending. If downsizing, a 63mm bore yields 1559N push; if upsizing, a 100mm bore yields 3927N.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI80BX290
- ✓ 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 SI80BX290 FAQ
Yes, the SI80BX290 is discontinued. The direct replacement is the SAI80BX290. It shares the same ISO 15552 mounting interface, 80mm bore, 290mm stroke, force, and G3/8 port, fitting existing fixtures perfectly.
It features a G3/8 air port. Theoretical forces are: 2513N push and 2268N pull at 0.5MPa, 3518N push at 0.7MPa, 4523N push at 0.9MPa, and a maximum force of 513kgf at 1.0MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI80BX290
Send us the quantity and destination. We confirm price, stock and lead time on the SAI80BX290 replacement — usually within 7-8 hours.