This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI80BX80S, 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 SI80BX80S
The AirTAC SI80 Standard Air Cylinder SI80BX80S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø80mm bore and 80mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI80BX80S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ80 mm
- Stroke80 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI80BX80S
- 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 SI80BX80S
The AirTAC SI80BX80S is a discontinued double-acting ISO 15552 profile cylinder with an 80mm bore, 80mm stroke, and a SUS304 stainless steel rod. Delivering 2513N push force at 0.5MPa, it is replaced by the SAI80BX80S. This direct successor matches the G3/8 port, M20x1.5 thread, and mounting interface.
The SAI upgrade features a two Y-shaped one-way piston seal for low start-up pressure and long life. The -S magnet supports legacy CS1-B/DS1-B sensors, while the SAI family adds SAIL and BSAI lock variants absent in the SI line.
Airtac SI80 Standard Air Cylinder SI80BX80S Technical Specifications
| Model | Airtac SI80 Standard Air Cylinder SI80BX80S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI80BX80S |
| Bore size | Ø80 mm |
| Stroke | 80 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 SAI80BX80S 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 SAI80BX80S 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 SI80BX80S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 80 | Bore size in mm. |
| ×80 | 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 SI80BX80S Is Used
Stainless Rod Clamping
Leverages the SUS304 rod for corrosion resistance while providing 2513N of clamping thrust at 0.5 MPa in washdown manufacturing environments.
Package Diverting
Short 80mm stroke actuates diverters at 30-800 mm/s, handling the dynamic load of routing heavy goods on packaging lines.
Pallet Stopping
Deploys the 513 kgf maximum theoretical force to halt pallets securely, relying on the adjustable 36mm air cushions for end-of-stroke deceleration.
Replacing the Airtac SI80 Standard Air Cylinder SI80BX80S with the SAI80BX80S
To replace the SI80BX80S, order the SAI80BX80S. Verify the ISO 15552 mounting interface, 80mm stroke, G3/8 port, and -S magnet for CS1-B/DS1-B switches. The -B rod is SUS304 stainless steel. For sizing, the neighbouring 63mm bore yields 1559N push at 0.5MPa, while the 100mm bore yields 3927N. Note that a plain cylinder drifts on air loss; the 36mm cushion only decelerates. For load holding, use an external rod lock, pilot check valve, or the SAIL/BSAI lock variants.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI80BX80S
- ✓ 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 SI80BX80S FAQ
Yes, the SI80BX80S is discontinued. The direct replacement is the SAI80BX80S. It shares the identical ISO 15552 mounting interface, 80mm bore, 80mm stroke, G3/8 port, and force ratings, fitting existing fixtures perfectly.
At 0.5 MPa it provides 2513N push and 2268N pull force. At 0.7 MPa push is 3518N, and at 0.9 MPa it is 4523N. The theoretical max force is 513 kgf at 1.0 MPa. Operating speed is 30-800 mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAI80BX80S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI80BX80S replacement — usually within 7-8 hours.