This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI80BX170S, 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 SI80BX170S
The AirTAC SI80 Standard Air Cylinder SI80BX170S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø80mm bore and 170mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI80BX170S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ80 mm
- Stroke170 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI80BX170S
- 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 SI80BX170S
The AirTAC SI80BX170S is a discontinued double-acting ISO 15552 profile cylinder with a 170 mm stroke and an 80 mm bore, delivering 2513 N push force at 0.5 MPa. This legacy unit features a SUS304 stainless piston rod (-B) and a built-in magnet (-S) for position sensing. AirTAC replaced it with the SAI80BX170S, a direct upgrade retaining the exact ISO 15552 mounting interface, G3/8 port, and 513 kgf maximum force.
The SAI replacement introduces an upgraded piston seal with two Y-shaped one-way elements for low start-up pressure and long life. The original -S magnet works with legacy CS1-B/DS1-B sensors, while the SAI family also adds SAIL, SAIF, and BSAI lock variants.
Airtac SI80 Standard Air Cylinder SI80BX170S Technical Specifications
| Model | Airtac SI80 Standard Air Cylinder SI80BX170S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI80BX170S |
| Bore size | Ø80 mm |
| Stroke | 170 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 SAI80BX170S 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 SAI80BX170S 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 SI80BX170S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 80 | Bore size in mm. |
| ×170 | 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 SI80BX170S Is Used
Package Diversion
Drives heavy lane diverters and sorting gates on high-throughput packaging conveyors where the 2513 N push force easily overcomes side friction.
Press Ejection
Ejects formed metal or composite parts from stamping presses, utilizing the 170 mm stroke and SUS304 rod to resist minor coolant splash.
Pallet Stopping
Acts as a robust end-stop or indexing pin for heavy pallet handling lines, securely halting loads up to the 128 kg vertical lift threshold.
Replacing the Airtac SI80 Standard Air Cylinder SI80BX170S with the SAI80BX170S
To replace the SI80BX170S, order the SAI80BX170S. Confirm the ISO 15552 mounting interface, the 80 mm bore, the 170 mm stroke, the G3/8 port, and your specific mounting accessory. The -B code specifies the SUS304 stainless rod for corrosion resistance, and the -S code denotes the magnet for CS1-B/DS1-B switches. If sizing down, a 63 mm bore yields 1559 N push at 0.5 MPa; sizing up to 100 mm provides 3927 N. A plain cylinder drifts on air loss—the cushion only decelerates—so use an external rod lock or pilot check valve for load holding, or specify the SAIL/BSAI lock variant.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI80BX170S
- ✓ 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 SI80BX170S FAQ
Yes, the AirTAC SI80BX170S is discontinued. The direct replacement is the SAI80BX170S. It shares the identical ISO 15552 mounting interface, 80 mm bore, 170 mm stroke, G3/8 port, and output force, fitting existing fixtures perfectly while adding an upgraded piston seal.
The bore is 80 mm with a G3/8 air port. At 0.5 MPa it provides 2513 N push and 2268 pull force. At 0.7 MPa push is 3518 N, and at 0.9 MPa it is 4523 N. The theoretical maximum force is 513 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI80BX170S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI80BX170S replacement — usually within 7-8 hours.