This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI80BX350SH, 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 SI80BX350SH
The AirTAC SI80 Standard Air Cylinder SI80BX350SH is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø80mm bore and 350mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI80BX350SH, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ80 mm
- Stroke350 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI80BX350SH
- 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 SI80BX350SH
The AirTAC SI80BX350SH is a discontinued double-acting ISO 15552 profile cylinder featuring a SUS304 stainless piston rod and Viton H high-temperature seals (0-150 C). Delivering 2513 N push force at 0.5 MPa through its G3/8 port, it is replaced by the SAI80BX350SH.
The SAI80BX350SH is a direct upgrade retaining the exact 80 mm bore, 350 mm stroke, and ISO 15552 mounting interface. It introduces an upgraded piston seal with two Y-shaped one-way elements for low start-up pressure.
Airtac SI80 Standard Air Cylinder SI80BX350SH Technical Specifications
| Model | Airtac SI80 Standard Air Cylinder SI80BX350SH |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI80BX350SH |
| Bore size | Ø80 mm |
| Stroke | 350 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 SAI80BX350SH 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 SAI80BX350SH 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 SI80BX350SH
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 80 | Bore size in mm. |
| ×350 | 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 SI80BX350SH Is Used
High-Temp Forming Press
Ideal for actuating small presses in heated zones, leveraging the Viton H seals and SUS304 rod for reliable 2513 N push force at elevated ambient temperatures.
Heavy Transfer Diverters
Drives robust routing gates on high-capacity assembly lines, utilizing the 350 mm stroke to clear wide pallets while maintaining ISO 15552 fixture compatibility.
Replacing the Airtac SI80 Standard Air Cylinder SI80BX350SH with the SAI80BX350SH
To replace the SI80BX350SH, order the SAI80BX350SH. Verify the ISO 15552 mounting interface, G3/8 port, M20x1.5 rod thread, and the -S magnet for CS1-B/DS1-B sensors (the SAI uses current AirTAC switches). Keep the -B SUS304 rod and -H Viton seals for 0-150 C environments. Sizing both ways: a 63 mm bore yields 1559 N push at 0.5 MPa, while a 100 mm bore yields 3927 N. Note that a plain cylinder drifts on air loss—the cushion only decelerates—so use an external rod lock or the SAIL/BSAI lock variant for holding. At 350 mm stroke, use external guides to prevent rod bending and side loads.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI80BX350SH
- ✓ 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 SI80BX350SH FAQ
Yes, the SI80BX350SH is discontinued. The direct replacement is the SAI80BX350SH. It shares the identical ISO 15552 mounting interface, 80 mm bore, 350 mm stroke, output force, and G3/8 port, fitting existing fixtures perfectly.
This double-acting cylinder features a G3/8 air port and an M20x1.5 rod thread. Force ratings are: 2513 N push and 2268 N pull at 0.5 MPa, 3518 N push at 0.7 MPa, 4523 N push at 0.9 MPa, and a theoretical maximum of 513 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI80BX350SH
Send us the quantity and destination. We confirm price, stock and lead time on the SAI80BX350SH replacement — usually within 7-8 hours.