This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI80AX150S, 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 SI80AX150S
The AirTAC SI80 Standard Air Cylinder SI80AX150S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø80mm bore and 150mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI80AX150S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ80 mm
- Stroke150 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI80AX150S
- 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 SI80AX150S
The AirTAC SI80AX150S is a discontinued double-acting ISO 15552 profile cylinder with an extruded aluminum barrel, delivering 2513 N push and 2268 N pull force at 0.5 MPa. It features a 25 mm SUS420J2 stainless piston rod, M20x1.5 thread, G3/8 port, 36 mm cushions, and a built-in magnet for legacy CS1-B/DS1-B sensors.
The direct replacement is the SAI80AX150S, retaining the same bore, stroke, port, and ISO 15552 mounting interface. The SAI upgrades the piston seal to two Y-shaped one-way elements for low start-up pressure.
Airtac SI80 Standard Air Cylinder SI80AX150S Technical Specifications
| Model | Airtac SI80 Standard Air Cylinder SI80AX150S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI80AX150S |
| Bore size | Ø80 mm |
| Stroke | 150 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 SAI80AX150S 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 SAI80AX150S 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 SI80AX150S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 80 | Bore size in mm. |
| ×150 | 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 SI80AX150S Is Used
Mid-Tonnage Pressing
Applies 2513 N of push force at 0.5 MPa for seating bearings, stamping light sheet metal, or clinching components in automated fixtures.
Pallet Diversion
Uses the 150 mm stroke and SUS420J2 stainless rod to push heavy pallets onto secondary conveyor lanes, resisting moisture and contamination.
Replacing the Airtac SI80 Standard Air Cylinder SI80AX150S with the SAI80AX150S
To replace the SI80AX150S, order the SAI80AX150S and confirm the ISO 15552 mounting interface, G3/8 port, and 150 mm stroke. The SAI accepts current AirTAC switches via its magnet groove, replacing the legacy CS1-B/DS1-B sensors. If you need more force than the 2513 N push at 0.5 MPa, step up to a 100 mm bore; if less is required, a 63 mm bore provides 1559 N. Note that a plain cylinder drifts on air loss as the cushion only decelerates; for load holding, specify the SAIL or BSAI lock variant, or use an external pilot check valve.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI80AX150S
- ✓ 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 SI80AX150S FAQ
Yes, the AirTAC SI80AX150S is discontinued. The direct replacement is the SAI80AX150S. It is dimensionally interchangeable per the ISO 15552 mounting interface, keeping the same 80 mm bore, 150 mm stroke, G3/8 port, and output force to fit existing fixtures directly.
This double-acting cylinder 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 of 513 kgf at 1.0 MPa. The operating speed ranges from 30-800 mm/s, operating pressure is 0.15-1.0 MPa, and it uses a G3/8 air port.
Related AirTAC SAI Cylinders
Request a Quote for the SAI80AX150S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI80AX150S replacement — usually within 7-8 hours.