This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI80BX105S, 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 SI80BX105S
The AirTAC SI80 Standard Air Cylinder SI80BX105S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø80mm bore and 105mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI80BX105S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ80 mm
- Stroke105 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI80BX105S
- 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 SI80BX105S
The AirTAC SI80BX105S is a discontinued double-acting ISO 15552 profile cylinder with an 80 mm bore, 105 mm stroke, and a SUS304 stainless steel rod. It delivers 2513 N push force at 0.5 MPa via a G3/8 port. The direct replacement is the SAI80BX105S, matching the bore, stroke, force, port, and ISO 15552 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 works with 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 SI80BX105S Technical Specifications
| Model | Airtac SI80 Standard Air Cylinder SI80BX105S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI80BX105S |
| Bore size | Ø80 mm |
| Stroke | 105 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 SAI80BX105S 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 SAI80BX105S 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 SI80BX105S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 80 | Bore size in mm. |
| ×105 | 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 SI80BX105S Is Used
Stainless Rod Clamping
Uses the SUS304 rod to resist moisture while providing 2513 N of clamping force on machined parts.
Transfer Line Diversion
Pushes heavy pallets laterally with a 105 mm stroke, relying on adjustable cushions to halt loads smoothly.
Replacing the Airtac SI80 Standard Air Cylinder SI80BX105S with the SAI80BX105S
To replace the SI80BX105S, order the SAI80BX105S. It is dimensionally interchangeable per ISO 15552, keeping the 80 mm bore, 105 mm stroke, M20x1.5 thread, and G3/8 port. Retain your -S magnet for current AirTAC switches and the -B SUS304 rod for corrosion resistance. The 80 mm bore yields 2513 N push at 0.5 MPa; if undersizing, a 63 mm bore gives 1559 N. Note that a plain cylinder drifts on air loss as the cushion only decelerates; for load holding, use an external rod lock or the SAIL/BSAI lock variant.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI80BX105S
- ✓ 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 SI80BX105S FAQ
Yes, the SI80BX105S is discontinued. The direct replacement is the SAI80BX105S. It shares the identical ISO 15552 mounting interface, 80 mm bore, 105 mm stroke, force, and G3/8 port, fitting existing fixtures perfectly.
It features a G3/8 air port and provides 2513 N push and 2268 N pull at 0.5 MPa. At 0.7 MPa push is 3518 N, and at 0.9 MPa it is 4523 N. The theoretical maximum force is 513 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI80BX105S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI80BX105S replacement — usually within 7-8 hours.