This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI80BX240, 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 SI80BX240
The AirTAC SI80 Standard Air Cylinder SI80BX240 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø80mm bore and 240mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI80BX240, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ80 mm
- Stroke240 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI80BX240
- 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 SI80BX240
The AirTAC SI80BX240 is a discontinued double-acting ISO 15552 profile cylinder with an 80mm bore and 240mm stroke. It delivers 2513N push and 2268N pull at 0.5MPa via a G3/8 port. The direct replacement is the SAI80BX240, sharing the same interface, force, and mounting. This specific SKU features a SUS304 stainless steel rod (B) but lacks a magnet, so it cannot accept position switches.
The SAI upgrade introduces a two Y-shaped one-way piston seal for low start-up pressure and long life. For higher temperatures, a Viton H seal option extends operation to 150C.
Airtac SI80 Standard Air Cylinder SI80BX240 Technical Specifications
| Model | Airtac SI80 Standard Air Cylinder SI80BX240 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI80BX240 |
| Bore size | Ø80 mm |
| Stroke | 240 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 SAI80BX240 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 SAI80BX240 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 SI80BX240
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 80 | Bore size in mm. |
| ×240 | 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 SI80BX240 Is Used
Stainless Rod Pressing
Ideal for clamping and pressing assemblies where the SUS304 rod resists moisture and corrosion.
Heavy Material Diversion
Provides robust 2513N push force to deflect heavy packages or workpieces on automated lines.
Pallet Lift Gates
Suitable for actuating safety gates or lifts in logistics hubs, handling safe loads up to 1508N.
Replacing the Airtac SI80 Standard Air Cylinder SI80BX240 with the SAI80BX240
To replace the SI80BX240, order the SAI80BX240. Confirm the ISO 15552 mounting interface, 80mm bore, 240mm stroke, G3/8 port, and SUS304 rod. Because this SKU lacks a magnet (-S), it cannot use CS1-B/DS1-B sensors; order a magnet-equipped SAI if sensing is needed. Sizing both ways: a 63mm bore yields 1559N push at 0.5MPa, while a 100mm bore yields 3927N. Note that a plain cylinder drifts on air loss—the cushion only decelerates. For load holding, use an external pilot check valve or the SAIL/BSAI lock variants.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI80BX240
- ✓ 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 SI80BX240 FAQ
Yes, the AirTAC SI80BX240 is discontinued. The direct replacement is the SAI80BX240. It is dimensionally interchangeable per ISO 15552, retaining the same 80mm bore, 240mm stroke, 513kgf max force, and G3/8 port.
This 80mm bore cylinder uses a G3/8 port. It outputs 2513N push and 2268N pull at 0.5MPa, 3518N push at 0.7MPa, 4523N at 0.9MPa, and a maximum theoretical force of 513kgf at 1.0MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI80BX240
Send us the quantity and destination. We confirm price, stock and lead time on the SAI80BX240 replacement — usually within 7-8 hours.