This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI80AX180S, 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 SI80AX180S
The AirTAC SI80 Standard Air Cylinder SI80AX180S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø80mm bore and 180mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI80AX180S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ80 mm
- Stroke180 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI80AX180S
- 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 SI80AX180S
The AirTAC SI80AX180S is a discontinued double-acting ISO 15552 profile cylinder with an 80mm bore, 180mm stroke, and a SUS420J2 stainless steel rod. It delivers 2513 N push force at 0.5 MPa via a G3/8 port. The direct replacement is the SAI80AX180S, matching the exact bore, stroke, force, port, and ISO 15552 mounting interface.
The SAI upgrade features a new piston seal with two Y-shaped one-way elements for low start-up pressure and long life. The -S magnet works with legacy CS1-B/DS1-B sensors, and a Viton H seal option raises heat resistance to 150 C.
Airtac SI80 Standard Air Cylinder SI80AX180S Technical Specifications
| Model | Airtac SI80 Standard Air Cylinder SI80AX180S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI80AX180S |
| Bore size | Ø80 mm |
| Stroke | 180 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 SAI80AX180S 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 SAI80AX180S 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 SI80AX180S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 80 | Bore size in mm. |
| ×180 | 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 SI80AX180S Is Used
Mid-Tonnage Pressing
Drives 2513 N of push force at 0.5 MPa for seating bearings and light stamping operations.
Heavy Package Diverting
Actuates routing gates and pushers on high-throughput material handling lines.
Pallet Lift Stops
Provides robust 180mm travel to index and halt heavy pallets at workflow stations.
Replacing the Airtac SI80 Standard Air Cylinder SI80AX180S with the SAI80AX180S
To replace the SI80AX180S, order the SAI80AX180S and confirm the ISO 15552 mounting fixture, 180mm stroke, G3/8 port, and M20x1.5 rod thread. The -S magnet enables CS1-B/DS1-B switches, while the -A rod specifies SUS420J2 stainless steel. If you need more force, the 100mm bore offers 3927 N push at 0.5 MPa; if less is needed, the 63mm bore provides 1559 N. For strokes over 300mm, use a guide to prevent rod bending. Note that air cushions only decelerate; for load holding on air loss, use an external rod lock, pilot check valve, or the SAIL/BSAI lock variants.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI80AX180S
- ✓ 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 SI80AX180S FAQ
Yes, the SI80AX180S is discontinued. The direct replacement is the SAI80AX180S. It shares the identical ISO 15552 mounting interface, 80mm bore, 180mm stroke, output force, and G3/8 port, fitting existing fixtures perfectly.
It features a G3/8 air port and generates 2513 N push and 2268 N pull at 0.5 MPa. 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 SAI80AX180S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI80AX180S replacement — usually within 7-8 hours.