This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI80X85, 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 SI80X85
The AirTAC SI80 Standard Air Cylinder SI80X85 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø80mm bore and 85mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI80X85, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ80 mm
- Stroke85 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI80X85
- 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 SI80X85
The AirTAC SI80X85 is a discontinued double-acting ISO 15552 profile cylinder with an 80 mm bore and 85 mm stroke, delivering 2513 N push force at 0.5 MPa through its G3/8 port. AirTAC replaced this legacy unit with the SAI80X85, a direct replacement sharing the exact same interface, bore, stroke, force and mounting fixtures.
The SAI upgrade features an improved piston seal with two Y-shaped one-way elements for low start-up pressure and long life. Note this specific SKU lacks the -S magnet, so it cannot accept CS1-B or DS1-B sensors.
Airtac SI80 Standard Air Cylinder SI80X85 Technical Specifications
| Model | Airtac SI80 Standard Air Cylinder SI80X85 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI80X85 |
| Bore size | Ø80 mm |
| Stroke | 85 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 SAI80X85 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 SAI80X85 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 SI80X85
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 80 | Bore size in mm. |
| ×85 | 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 SI80X85 Is Used
Press Ejection
Provides robust 2513 N push force at 0.5 MPa to eject formed metal parts from press beds, utilizing the 85 mm stroke for rapid retraction.
Package Diversion
Actuates heavy-duty routing gates on high-speed packaging lines, where the 128 kg safe vertical lift capacity handles dense cartons reliably.
Pallet Stops
Functions as a pneumatic stop in roller conveyors to halt loaded pallets, with the G3/8 port ensuring adequate flow for quick cycling.
Replacing the Airtac SI80 Standard Air Cylinder SI80X85 with the SAI80X85
To replace the SI80X85, order the SAI80X85. Confirm the ISO 15552 mounting interface (LB foot, FA flange, TC trunnion, etc.), the 85 mm stroke, and the G3/8 port. Since this SKU has no -S magnet, it cannot support position sensing; if switches are needed, specify an SAI80X85S. For load holding, remember a standard cylinder drifts on air loss—the cushion only decelerates. Use an external pilot check valve or the SAIL/BSAI lock variants. If downsizing, the 63 mm bore yields 1559 N push; if upsizing, the 100 mm bore provides 3927 N at 0.5 MPa.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI80X85
- ✓ 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 SI80X85 FAQ
Yes, the AirTAC SI80X85 is discontinued and end-of-life. The direct replacement is the SAI80X85. It is dimensionally interchangeable per ISO 15552, matching the 80 mm bore, 85 mm stroke, G3/8 port, and mounting interface, so it fits existing fixtures perfectly.
The 80 mm bore uses a G3/8 air port and a 25 mm piston rod. Force output is 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, with a theoretical maximum of 513 kgf at 1.0 MPa. Operating speed is 30-800 mm/s.
Request a Quote for the SAI80X85
Send us the quantity and destination. We confirm price, stock and lead time on the SAI80X85 replacement — usually within 7-8 hours.