This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI80X170S, 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 SI80X170S
The AirTAC SI80 Standard Air Cylinder SI80X170S 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 SAI80X170S, 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 → SAI80X170S
- 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 SI80X170S
The AirTAC SI80X170S is a discontinued double-acting ISO 15552 profile cylinder featuring an extruded aluminum barrel and a built-in piston magnet for CS1-B/DS1-B legacy switches. Delivering 2513 N push force at 0.5 MPa, it utilizes a G3/8 port and a 25 mm piston rod. AirTAC replaced this legacy unit with the SAI80X170S, a direct upgrade retaining the exact ISO 15552 mounting interface, 170 mm stroke, and output force.
The SAI replacement introduces an upgraded piston seal with two Y-shaped one-way elements for low start-up pressure and extended life. The SAI family also expands functionality with SAIL air-released lock, SAIF built-in valve, and BSAI clamp-lock variants that the original SI line lacked.
Airtac SI80 Standard Air Cylinder SI80X170S Technical Specifications
| Model | Airtac SI80 Standard Air Cylinder SI80X170S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI80X170S |
| 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 SAI80X170S 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 SAI80X170S 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 SI80X170S
| 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 SI80X170S Is Used
Mid-Tonnage Pressing
Applies up to 4523 N of push force at 0.9 MPa for seating bearings, stamping light-gauge metals, or clinching components in automated assembly lines.
Pallet Diversion
Uses the 170 mm stroke to extend heavy-duty diverters or routing gates, shifting loaded pallets across conveyor lanes without requiring external guides.
Replacing the Airtac SI80 Standard Air Cylinder SI80X170S with the SAI80X170S
To replace the discontinued SI80X170S, order the SAI80X170S. Verify your existing fixture's ISO 15552 mounting interface, 80 mm bore, 170 mm stroke, G3/8 port, and M20x1.5 rod thread. The -S suffix indicates a magnet for position sensing; the legacy SI used CS1-B/DS1-B switches, while the SAI uses current AirTAC sensors. If sizing up or down, adjacent bores (63 mm or 100 mm) offer push forces of 1559 N or 3927 N at 0.5 MPa respectively. A plain cylinder drifts on air loss because the adjustable cushion only decelerates near stroke end; for load holding, specify the SAIL or BSAI lock variant, or use an external pilot check valve. Rod material options include carbon steel, SUS420J2, or SUS304.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI80X170S
- ✓ 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 SI80X170S FAQ
Yes, the SI80X170S is discontinued. The direct replacement is the AirTAC SAI80X170S. It features the same ISO 15552 mounting interface, 80 mm bore, 170 mm stroke, output force, and G3/8 port, fitting directly into existing fixtures.
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 is 513 kgf at 1.0 MPa. Operating pressure is 0.15-1.0 MPa, speed is 30-800 mm/s, and it uses a G3/8 port with a 36 mm adjustable cushion.
Related AirTAC SAI Cylinders
Request a Quote for the SAI80X170S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI80X170S replacement — usually within 7-8 hours.