This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI80BX580S, 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 SI80BX580S
The AirTAC SI80 Standard Air Cylinder SI80BX580S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø80mm bore and 580mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI80BX580S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ80 mm
- Stroke580 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI80BX580S
- 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 SI80BX580S
The AirTAC SI80BX580S is a discontinued double-acting ISO 15552 profile cylinder featuring a SUS304 stainless steel rod and a 580 mm stroke. Delivering 2513 N push force at 0.5 MPa, it is directly replaced by the SAI80BX580S. This direct upgrade shares the exact same G3/8 port, M20x1.5 thread, and ISO 15552 mounting interface.
The SAI replacement features an upgraded piston seal with two Y-shaped one-way elements for low start-up pressure and long life. The original SI80BX580S includes a piston magnet for CS1-B/DS1-B switches; the SAI family uses current AirTAC switches and adds SAIL lock, SAIF valve, and BSAI clamp-lock variants.
Airtac SI80 Standard Air Cylinder SI80BX580S Technical Specifications
| Model | Airtac SI80 Standard Air Cylinder SI80BX580S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI80BX580S |
| Bore size | Ø80 mm |
| Stroke | 580 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 SAI80BX580S 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 SAI80BX580S 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 SI80BX580S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 80 | Bore size in mm. |
| ×580 | 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 SI80BX580S Is Used
Long-Stroke Diversion
Executes 580 mm lateral package routing on high-speed conveying lines, utilizing the 2513 N push force to reliably shift heavy pallets without side-loading the rod.
Replacing the Airtac SI80 Standard Air Cylinder SI80BX580S with the SAI80BX580S
To replace the SI80BX580S, order the SAI80BX580S. Confirm the ISO 15552 mounting interface, the 80 mm bore, the 580 mm stroke, the G3/8 port, and the SUS304 stainless rod (-B). Because the stroke is 580 mm, use external guides to prevent rod bending and side-load damage. For sizing, neighboring bores offer different forces: a 63 mm bore yields 1559 N push at 0.5 MPa, while a 100 mm bore yields 3927 N. A plain cylinder does not hold load without live air; the cushion only decelerates. For load holding on air loss, use an external rod lock, a pilot check valve, or the SAIL/BSAI lock variants.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI80BX580S
- ✓ 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 SI80BX580S FAQ
Yes, the SI80BX580S is discontinued. The direct replacement is the SAI80BX580S. It shares the same ISO 15552 mounting interface, 80 mm bore, 580 mm stroke, G3/8 port, and output force, fitting existing fixtures perfectly.
This double-acting cylinder has a G3/8 air port. It delivers 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 SAI80BX580S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI80BX580S replacement — usually within 7-8 hours.