This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI80X1700, 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.

The AirTAC SI80 Standard Air Cylinder SI80X1700 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø80mm bore and 1700mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI80X1700, which matches its ISO interface, bore, stroke, force and mounting.
The AirTAC SI80X1700 is a discontinued double-acting ISO 15552 profile cylinder with a 1700 mm stroke. As a non-standard made-to-order stroke exceeding the 1500 mm maximum for this bore, it delivers 2513 N push and 2268 N pull at 0.5 MPa. The direct replacement is the SAI80X1700, which preserves the G3/8 port, M20x1.5 rod thread, and 36 mm cushions. Dimensionally interchangeable per ISO 15552, the SAI fits existing fixtures perfectly.
The SAI upgrade features a revised piston seal with two Y-shaped one-way elements for low start-up pressure and extended life. This SKU lacks a magnet (-S), so it cannot accept CS1-B/DS1-B sensors. For high heat, Viton H seals raise the temperature limit to 150 C.
| Model | Airtac SI80 Standard Air Cylinder SI80X1700 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI80X1700 |
| Bore size | Ø80 mm |
| Stroke | 1700 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 SAI80X1700 carries the same ISO 15552 ratings. Confirm against the product label before installation. Thread options: PT / G / NPT.
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 2513 N | 2268 N |
| 0.7 MPa | 3519 N | — |
| Max (@1.0 MPa) | 513 kgf | |
The SAI80X1700 produces the same force from the same bore. Actual usable force is lower than theoretical; size with a margin.
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 80 | Bore size in mm. |
| ×1700 | 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).
Drives extended conveyor sorting arms across wide belt junctions, utilizing the full 1700 mm stroke to bridge distant workstations.
Actuates deep-reach pusher mechanisms in automated storage systems, moving palletized goods with 2513 N of push force at 0.5 MPa.
Ejects oversized fabricated panels from heavy presses, relying on the 36 mm adjustable air cushions to decelerate the 80 mm bore at stroke end.
To replace the SI80X1700, order the SAI80X1700. Confirm the ISO 15552 mounting interface (LB, FA, CA, TC), the G3/8 port, and the non-standard 1700 mm stroke. Because 1700 mm exceeds the 1500 mm standard maximum, this is a made-to-order item; at this length, add external guides to prevent rod bending and side-load damage. Sizing both ways: a 63 mm bore gives 1559 N push at 0.5 MPa, while a 100 mm bore gives 3927 N. This plain, non-magnet SKU cannot take a sensor. Note that a standard cylinder drifts on air loss—the cushion only decelerates. For load holding, use an external pilot check valve or the SAIL/BSAI lock variants.
Replacement checklist
Yes, the AirTAC SI80X1700 is discontinued. The direct replacement is the SAI80X1700. It is dimensionally interchangeable per ISO 15552, retaining the same bore, 1700 mm stroke, 513 kgf max force, G3/8 port, and mounting interface.
The bore is 80 mm with a G3/8 air port. 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, and a theoretical max of 513 kgf at 1.0 MPa. Operating speed is 30-800 mm/s.
Send us the quantity and destination. We confirm price, stock and lead time on the SAI80X1700 replacement — usually within 7-8 hours.