This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI80AX185, 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 SI80AX185
The AirTAC SI80 Standard Air Cylinder SI80AX185 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø80mm bore and 185mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI80AX185, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ80 mm
- Stroke185 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI80AX185
- 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 SI80AX185
The AirTAC SI80AX185 is a discontinued double-acting ISO 15552 profile cylinder with an 80mm bore and 185mm stroke. Delivering 2513N push force at 0.5MPa via a G3/8 port, it is replaced by the SAI80AX185. This direct successor matches the exact interface, bore, stroke, force, port and mounting hardware. The SAI features an upgraded piston seal with two Y-shaped one-way elements for low start-up pressure and long life. This specific SKU has an SUS420J2 stainless rod (-A) but lacks a magnet, so it cannot accept a CS1-B/DS1-B sensor.
The SAI family also introduces SAIL, SAIF and BSAI lock variants absent from the SI line. Note that a plain cylinder drifts on air loss; the cushion only decelerates near stroke end.
Airtac SI80 Standard Air Cylinder SI80AX185 Technical Specifications
| Model | Airtac SI80 Standard Air Cylinder SI80AX185 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI80AX185 |
| Bore size | Ø80 mm |
| Stroke | 185 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 SAI80AX185 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 SAI80AX185 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 SI80AX185
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 80 | Bore size in mm. |
| ×185 | 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 SI80AX185 Is Used
Mid-Tonnage Pressing
Applies 2513N of push force at 0.5MPa for seating bearings, stamping light sheet metal, or clinching components in automated fixtures.
Heavy Diverting
Uses the 185mm stroke to push heavy pallets or product cases cleanly off a main conveyor line onto a secondary packaging belt.
Replacing the Airtac SI80 Standard Air Cylinder SI80AX185 with the SAI80AX185
To replace the SI80AX185, order the SAI80AX185. Verify the ISO 15552 mounting interface, 80mm bore, 185mm stroke, G3/8 port (PT/G/NPT thread options) and your specific mounting accessory. Because this SKU lacks the -S magnet, it cannot support position sensing; if you need switches, select an SAI80X185S and use current AirTAC sensors instead of the legacy CS1-B/DS1-B. Sizing both ways: dropping to a 63mm bore gives 1559N push at 0.5MPa, while an 80mm bore at 0.7MPa yields 3518N. For load holding on air loss, add an external rod lock or pilot check valve, or choose the SAIL/BSAI lock variant. The -A rod denotes SUS420J2 stainless steel for corrosion resistance.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI80AX185
- ✓ 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 SI80AX185 FAQ
Yes, the SI80AX185 is discontinued. The direct replacement is the SAI80AX185. It is dimensionally interchangeable per ISO 15552, matching the 80mm bore, 185mm stroke, 2513N force, G3/8 port and mounting interface, so it fits existing fixtures.
The G3/8 port feeds a 25mm rod. Force output is 2513N push and 2268N pull at 0.5MPa, 3518N push at 0.7MPa, 4523N push at 0.9MPa, and a theoretical max of 513kgf at 1.0MPa. Speed is 30-800mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAI80AX185
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