This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI80BX670S, 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 SI80BX670S
The AirTAC SI80 Standard Air Cylinder SI80BX670S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø80mm bore and 670mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI80BX670S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ80 mm
- Stroke670 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI80BX670S
- 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 SI80BX670S
The AirTAC SI80BX670S is a discontinued double-acting ISO 15552 profile cylinder with a 670 mm stroke and SUS304 stainless steel rod. Delivering 2513 N push force at 0.5 MPa, it is replaced by the SAI80BX670S. This direct upgrade keeps the same G3/8 port, M20x1.5 thread, and ISO 15552 mounting interface.
The SAI upgrade features a two Y-shaped one-way piston seal for low start-up pressure and long life. The -S magnet works with legacy CS1-B/DS1-B sensors, while a plain cylinder needs an external rod lock for load holding.
Airtac SI80 Standard Air Cylinder SI80BX670S Technical Specifications
| Model | Airtac SI80 Standard Air Cylinder SI80BX670S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI80BX670S |
| Bore size | Ø80 mm |
| Stroke | 670 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 SAI80BX670S 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 SAI80BX670S 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 SI80BX670S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 80 | Bore size in mm. |
| ×670 | 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 SI80BX670S Is Used
Long-Stroke Diversion
Drives large package diverters across wide conveyor belts where the 670 mm travel and 2513 N push force at 0.5 MPa are required.
Pallet Push-Off
Pushes heavy pallets from roller lanes, utilizing the SUS304 stainless rod to resist moisture and corrosion in damp dispatch zones.
Replacing the Airtac SI80 Standard Air Cylinder SI80BX670S with the SAI80BX670S
To replace the SI80BX670S, order the SAI80BX670S to retain the exact ISO 15552 mounting, 80 mm bore, 670 mm stroke, G3/8 port, and SUS304 rod. If downsizing, a 63 mm bore yields 1559 N at 0.5 MPa; if upsizing, a 100 mm bore provides 3927 N. Because the 670 mm stroke invites rod bending, use an external guide to prevent side loads. The cushion only decelerates; for load holding on air loss, specify the SAIL or BSAI lock variant.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI80BX670S
- ✓ 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 SI80BX670S FAQ
Yes, the SI80BX670S is discontinued. The direct replacement is the SAI80BX670S. It features the same ISO 15552 mounting interface, 80 mm bore, 670 mm stroke, G3/8 port, and force ratings, but adds an upgraded two Y-shaped one-way piston seal for longer life.
The G3/8 port and M20x1.5 rod thread deliver a push force of 2513 N and pull of 2268 N at 0.5 MPa. At 0.7 MPa push is 3518 N, at 0.9 MPa it is 4523 N, and the theoretical max is 513 kgf at 1.0 MPa. Operating speed is 30-800 mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAI80BX670S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI80BX670S replacement — usually within 7-8 hours.