This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI80BX475, 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 SI80BX475
The AirTAC SI80 Standard Air Cylinder SI80BX475 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø80mm bore and 475mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI80BX475, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ80 mm
- Stroke475 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI80BX475
- 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 SI80BX475
The AirTAC SI80BX475 is a discontinued double-acting ISO 15552 profile cylinder with an 80mm bore and 475mm stroke. Delivering 2513N push and 2268N pull at 0.5MPa via a G3/8 port, it is replaced by the SAI80BX475. This direct upgrade retains the exact ISO 15552 mounting interface, M20x1.5 rod thread, and 36mm cushions.
The SAI features an upgraded piston seal with two Y-shaped one-way elements for low start-up pressure and long life. This SKU uses a SUS304 stainless rod (-B) and lacks a magnet, so it cannot take CS1-B/DS1-B sensors. For higher heat, Viton H seals raise the limit to 150C.
Airtac SI80 Standard Air Cylinder SI80BX475 Technical Specifications
| Model | Airtac SI80 Standard Air Cylinder SI80BX475 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI80BX475 |
| Bore size | Ø80 mm |
| Stroke | 475 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 SAI80BX475 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 SAI80BX475 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 SI80BX475
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 80 | 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 SI80 Standard Air Cylinder SI80BX475 Is Used
Material Diversion
Actuates heavy diverter arms on packaging lines, using the 2513N thrust to push loaded cartons reliably without bounce-back.
Vertical Pressing
Provides consistent down-force for pressing bearings or pins, safely handling components up to the 128kg vertical-lift threshold.
Stainless Rod Washdown
The SUS304 piston rod (-B) suits corrosive or washdown environments where a standard carbon-steel rod would pit or degrade.
Replacing the Airtac SI80 Standard Air Cylinder SI80BX475 with the SAI80BX475
To replace the SI80BX475, order the SAI80BX475. Confirm the ISO 15552 mounting interface, 80mm bore, 475mm stroke, G3/8 port, and your specific mounting accessory (LB, FA, TC, etc.). Because this SKU lacks the -S magnet, it cannot accept position sensors; if sensing is needed, switch to an SAI80X475S. For sizing, the 80mm bore yields 2513N push at 0.5MPa; dropping to a 63mm bore gives 1559N, while increasing to 100mm provides 3927N. Note that a plain cylinder drifts on air loss—the cushion only decelerates—so use an external rod lock, pilot check valve, or the SAIL/BSAI lock variant for load holding. Finally, at 475mm stroke, use external guides to prevent rod bending and side-load wear.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI80BX475
- ✓ 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 SI80BX475 FAQ
Yes, the SI80BX475 is discontinued. The direct replacement is the SAI80BX475. It is dimensionally interchangeable per ISO 15552, matching the 80mm bore, 475mm stroke, G3/8 port, and mounting fixtures, but adds an upgraded two Y-shaped element piston seal.
The G3/8 port feeds a 25mm rod. At 0.5MPa it outputs 2513N push and 2268N pull. At 0.7MPa push is 3518N, and at 0.9MPa it is 4523N. The theoretical maximum force is 513kgf at 1.0MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI80BX475
Send us the quantity and destination. We confirm price, stock and lead time on the SAI80BX475 replacement — usually within 7-8 hours.