This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI160BX475S, 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 SI160 Standard Cylinder SI160BX475S
The AirTAC SI160 Standard Cylinder SI160BX475S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø160mm bore and 475mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI160BX475S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ160 mm
- Stroke475 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2.0
- StatusDiscontinued → SAI160BX475S
- 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 SI160 Standard Cylinder SI160BX475S
The AirTAC SI160BX475S is a discontinued double-acting ISO 15552 profile cylinder with a 160 mm bore, 475 mm stroke, and a SUS304 stainless steel piston rod. It delivers 10053 N push force at 0.5 MPa via a G3/4 port. AirTAC replaced this legacy unit with the SAI160BX475S, a direct sharing the exact ISO 15552 mounting interface, bore, stroke, force, and port.
The SAI upgrade features a two Y-shaped one-way piston seal for low start-up pressure and long life. The SAI family also adds SAIL and BSAI lock variants absent in the SI line.
Airtac SI160 Standard Cylinder SI160BX475S Technical Specifications
| Model | Airtac SI160 Standard Cylinder SI160BX475S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI160BX475S |
| Bore size | Ø160 mm |
| Stroke | 475 mm |
| Acting type | Double acting |
| Port size | G3/4 |
| Rod thread | M36×2.0 |
| 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 – 500 mm/s |
| Cushion | Adjustable, 50 mm |
| Max standard stroke | Up to 1500 mm |
Specifications follow the official AirTAC SI datasheet (now discontinued). The SAI160BX475S carries the same ISO 15552 ratings. Confirm against the product label before installation. Thread options: PT / G / NPT.
Theoretical Output Force (Ø160mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 10053 N | 9425 N |
| 0.7 MPa | 14074 N | — |
| Max (@1.0 MPa) | 2050 kgf | |
The SAI160BX475S produces the same force from the same bore. Actual usable force is lower than theoretical; size with a margin.
Model Code: Airtac SI160 Standard Cylinder SI160BX475S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 160 | Bore size in mm. |
| ×475 | 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 SI160 Standard Cylinder SI160BX475S Is Used
Heavy Machinery Forming
Drives large presses and forming fixtures requiring sustained high force, utilizing the 14074 N push output at 0.7 MPa to shape heavy metal components.
Corrosive Fluid Handling
Actuates heavy valves in washdown or chemical environments using the SUS304 stainless rod option to resist corrosion while moving large masses.
Replacing the Airtac SI160 Standard Cylinder SI160BX475S with the SAI160BX475S
To replace the SI160BX475S, order the SAI160BX475S and verify the ISO 15552 mounting interface, 475 mm stroke, G3/4 port, and the -S magnet for current AirTAC switches. If downsizing, a 125 mm bore yields 6136 N push at 0.5 MPa; if upsizing, a 200 mm bore yields 15708 N. Because this is a 475 mm stroke, use external guides to prevent rod bending and side-load damage. A plain cylinder drifts on air loss—the cushion only decelerates—so use an external rod lock or pilot check valve for load holding, or specify the SAIL/BSAI lock variant. The Viton H seal option raises the temperature range to 0-150 C.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI160BX475S
- ✓ Same bore / stroke / force
- ✓ Port/thread type (PT/G/NPT)
- ✓ Magnet (-S) for sensors?
- ✓ Mounting reused (FA/FB/CA/CB/CR/LB/TC)
Airtac SI160 Standard Cylinder SI160BX475S FAQ
Yes, the SI160BX475S is discontinued. The direct replacement is the SAI160BX475S. It is dimensionally interchangeable per the ISO 15552 mounting interface, retaining the same 160 mm bore, 475 mm stroke, output force, G3/4 port, and mounting accessories.
The 160 mm bore generates 10053 N push and 9425 N pull at 0.5 MPa, 14074 N push at 0.7 MPa, 18095 N at 0.9 MPa, and a maximum theoretical force of 2050 kgf at 1.0 MPa. Operating speed is 30-500 mm/s, the rod thread is M36x2, and it has 50 mm adjustable cushions at both ends.
Related AirTAC SAI Cylinders
Request a Quote for the SAI160BX475S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI160BX475S replacement — usually within 7-8 hours.