This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI80BX175S, 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 SI80BX175S
The AirTAC SI80 Standard Air Cylinder SI80BX175S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø80mm bore and 175mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI80BX175S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ80 mm
- Stroke175 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI80BX175S
- 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 SI80BX175S
The AirTAC SI80BX175S is a discontinued double-acting ISO 15552 profile cylinder with an extruded aluminum barrel, an SUS304 stainless steel piston rod (-B), and a built-in magnet (-S). Delivering 2513 N push force at 0.5 MPa through its G3/8 port, it is replaced by the SAI80BX175S. This direct successor matches the exact bore, stroke, and mounting interface.
The SAI upgrade features a modernized piston seal with two Y-shaped one-way elements for low start-up pressure and long life. The original SI relies on CS1-B/DS1-B sensors, while the SAI uses current AirTAC switches.
Airtac SI80 Standard Air Cylinder SI80BX175S Technical Specifications
| Model | Airtac SI80 Standard Air Cylinder SI80BX175S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI80BX175S |
| Bore size | Ø80 mm |
| Stroke | 175 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 SAI80BX175S 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 SAI80BX175S 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 SI80BX175S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 80 | Bore size in mm. |
| ×175 | 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 SI80BX175S Is Used
Stainless Rod Actuation
The SUS304 rod excels in washdown or mildly corrosive industrial clamping tasks requiring 2513 N of push force at 0.5 MPa.
Package Diverting
Provides robust 175 mm stroke diverting action on material handling lines, with adjustable cushions absorbing end-of-stroke impacts.
Replacing the Airtac SI80 Standard Air Cylinder SI80BX175S with the SAI80BX175S
To replace the SI80BX175S, order the SAI80BX175S. It is dimensionally interchangeable per the ISO 15552 mounting interface, keeping the 80 mm bore, 175 mm stroke, G3/8 port, and M20x1.5 rod thread. Retain your original mounting accessories and confirm the -S magnet for position sensing. If you need to downsize, a 63 mm bore yields 1559 N push at 0.5 MPa; if you need more force, a 100 mm bore provides 3927 N. Note that a plain cylinder drifts on air loss—the cushion only decelerates. For load holding, use an external rod lock, a pilot check valve, or the SAIL/BSAI lock variants. The SAI family also adds the SAIF self-valve option (bores 32-100).
Replacement checklist
- ✓ Same ISO 15552 interface → SAI80BX175S
- ✓ 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 SI80BX175S FAQ
Yes, the SI80BX175S is discontinued. The direct replacement is the SAI80BX175S. It is dimensionally interchangeable per ISO 15552, retaining the same 80 mm bore, 175 mm stroke, G3/8 port, and mounting fixtures.
The bore is 80 mm with a G3/8 air port. At 0.5 MPa it provides 2513 N push and 2268 N pull force. 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 SAI80BX175S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI80BX175S replacement — usually within 7-8 hours.