This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI80BX5S, 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 SI80BX5S
The AirTAC SI80 Standard Air Cylinder SI80BX5S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø80mm bore and 5mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI80BX5S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ80 mm
- Stroke5 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI80BX5S
- 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 SI80BX5S
The AirTAC SI80BX5S is a discontinued double-acting ISO 15552 profile cylinder with a 5 mm stroke and 80 mm bore. It delivers 2513 N push and 2268 N pull at 0.5 MPa through a G3/8 port. This version uses a SUS304 stainless piston rod for corrosion resistance and includes a magnet for CS1-B/DS1-B sensors. The direct replacement is the SAI80BX5S, retaining identical ISO 15552 mounting, force, and porting.
The SAI upgrade features a two Y-shaped one-way piston seal for low start-up pressure and long life. For high heat, Viton H seals raise the limit to 150 C. If you need load holding on air loss, note the cushion only decelerates; use an external rod lock or the SAIL/BSAI lock variants.
Airtac SI80 Standard Air Cylinder SI80BX5S Technical Specifications
| Model | Airtac SI80 Standard Air Cylinder SI80BX5S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI80BX5S |
| Bore size | Ø80 mm |
| Stroke | 5 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 SAI80BX5S 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 SAI80BX5S 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 SI80BX5S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 80 | Bore size in mm. |
| ×5 | 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 SI80BX5S Is Used
Short-Stroke Clamping
Ideal for high-force clamping of stainless fixtures where the SUS304 rod prevents corrosion from coolant.
Compact Pressing
Delivers 2513 N of thrust in a 5 mm travel for seating bearings or stamping light components.
Ejector Mechanism
Provides a fast 30-800 mm/s ejection stroke in packaging lines, with the magnet confirming position.
Replacing the Airtac SI80 Standard Air Cylinder SI80BX5S with the SAI80BX5S
To replace the SI80BX5S, order the SAI80BX5S. Confirm the ISO 15552 interface, 80 mm bore, 5 mm stroke, G3/8 port, and mounting accessory. The -S magnet enables CS1-B/DS1-B sensors (the SAI uses current AirTAC switches), while -B specifies the SUS304 rod. If sizing up or down, neighbour bores offer different force classes. A plain cylinder drifts without live air; for load holding, use a pilot check valve or the SAIL/BSAI lock variant. The 5 mm stroke is very short, so side-load risks are minimal, but ensure rigid guidance to prevent rod binding.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI80BX5S
- ✓ 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 SI80BX5S FAQ
Yes, the SI80BX5S is discontinued. The direct replacement is the SAI80BX5S. It is dimensionally interchangeable per ISO 15552, keeping the same 80 mm bore, 5 mm stroke, G3/8 port, and SUS304 rod.
It has a G3/8 port. Force output is 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 max of 513 kgf at 1.0 MPa.
Request a Quote for the SAI80BX5S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI80BX5S replacement — usually within 7-8 hours.