This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI80BX300SH, 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 SI80BX300SH
The AirTAC SI80 Standard Air Cylinder SI80BX300SH is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø80mm bore and 300mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI80BX300SH, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ80 mm
- Stroke300 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI80BX300SH
- 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 SI80BX300SH
The AirTAC SI80BX300SH is a discontinued double-acting ISO 15552 profile cylinder with an 80 mm bore and 300 mm stroke. It delivers 2513 N push and 2268 N pull at 0.5 MPa through a G3/8 port. The direct replacement is the SAI80BX300SH, sharing the same interface, force, and mounting. This specific unit features a SUS304 stainless steel rod (-B), a high-temp Viton H seal (0-150 C), and a piston magnet (-S) for CS1-B/DS1-B sensors.
The SAI upgrade introduces a two Y-shaped one-way piston seal for low start-up pressure and long life. The SAI family also adds SAIL, SAIF, and BSAI lock variants the SI lacked. Because this is a 300 mm stroke, use external guides to prevent rod bending under side loads.
Airtac SI80 Standard Air Cylinder SI80BX300SH Technical Specifications
| Model | Airtac SI80 Standard Air Cylinder SI80BX300SH |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI80BX300SH |
| Bore size | Ø80 mm |
| Stroke | 300 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 SAI80BX300SH 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 SAI80BX300SH 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 SI80BX300SH
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 80 | Bore size in mm. |
| ×300 | 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 SI80BX300SH Is Used
High-Temp Forming Press
Ideal for actuating small presses or forming dies in heated zones, leveraging the 2513 N push force at 0.5 MPa alongside the Viton H seal rated for 0-150 C environments.
Corrosive Washdown Divert
The SUS304 stainless rod (-B) excels in food or chemical washdown stations, reliably diverting heavy packages over the 300 mm travel without rusting.
Replacing the Airtac SI80 Standard Air Cylinder SI80BX300SH with the SAI80BX300SH
To replace the SI80BX300SH, order the SAI80BX300SH direct equivalent, confirming the ISO 15552 mounting interface, G3/8 port, M20x1.5 rod thread, and your specific mounting accessory. Retain the -B SUS304 rod, -H Viton seal, and -S magnet (the SAI uses current AirTAC switches instead of the legacy CS1-B/DS1-B). If you need less force, a 63 mm bore provides 1559 N push at 0.5 MPa; if you need more, a 100 mm bore yields 3927 N. Note that a plain cylinder drifts on air loss—the cushion only decelerates. For load holding, use an external rod lock, pilot check valve, or the SAIL/BSAI lock variants. Finally, at 300 mm stroke, always support the load with external guides to avoid rod bending.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI80BX300SH
- ✓ 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 SI80BX300SH FAQ
Yes, the AirTAC SI80BX300SH is discontinued. The direct replacement is the SAI80BX300SH. It is dimensionally interchangeable per ISO 15552, retaining the exact same 80 mm bore, 300 mm stroke, 513 kgf max force, G3/8 port, and mounting interface.
This double-acting cylinder features a G3/8 air port and an M20x1.5 rod thread. The thrust outputs 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 force of 513 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI80BX300SH
Send us the quantity and destination. We confirm price, stock and lead time on the SAI80BX300SH replacement — usually within 7-8 hours.