This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI80X700TC, 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 SI80X700TC is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø80mm bore and 700mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI80X700TC, which matches its ISO interface, bore, stroke, force and mounting.
The AirTAC SI80X700TC is a discontinued double-acting ISO 15552 profile cylinder with an 80 mm bore and 700 mm stroke. It delivers 2513 N push and 2268 N pull at 0.5 MPa, utilizing a G3/8 port and M20x1.5 rod thread. Because this SI unit is end-of-life, you should order the direct replacement: SAI80X700TC. The SAI keeps the same ISO 15552 mounting interface, TC trunnion, force, and stroke, fitting your existing fixtures perfectly.
The SAI upgrade features a modernized piston seal with two Y-shaped one-way elements for low start-up pressure and extended life. Note that this specific SKU lacks a magnet (-S), so it cannot accept CS1-B or DS1-B sensors. If you need load holding on air loss, consider the SAIL or BSAI lock variants, as the standard cushion only decelerates.
| Model | Airtac SI80 Standard Air Cylinder SI80X700TC |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI80X700TC |
| Bore size | Ø80 mm |
| Stroke | 700 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 SAI80X700TC 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 SAI80X700TC 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. |
| ×700 | 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 large packages across wide conveyor belts using the 700 mm stroke and 2513 N push force at 0.5 MPa.
Ejects molded parts from large presses, relying on the 36 mm adjustable air cushions to decelerate the load.
To replace the discontinued SI80X700TC, order the SAI80X700TC. Verify your ISO 15552 TC trunnion mounting, 80 mm bore, 700 mm stroke, and G3/8 port. Because this SKU has no magnet, it cannot support position sensing; if you need switches, select an SAI80X700S equivalent and use current AirTAC sensors. Sizing context: an 80 mm bore gives 2513 N push at 0.5 MPa, sitting between the 63 mm (1559 N) and 100 mm (3927 N) options. For load holding without live air, add an external pilot check valve or explore the SAIL/BSAI lock variants, since standard cushions only decelerate. Finally, with a 700 mm stroke, use an external guide to prevent rod bending and manage side loads.
Replacement checklist
Yes, the SI80X700TC is discontinued. The direct replacement is the SAI80X700TC. It is a current-production ISO 15552 cylinder with the same 80 mm bore, 700 mm stroke, 2513 N force, G3/8 port, and TC trunnion mounting interface.
The 80 mm bore uses a G3/8 port. It generates 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 SAI80X700TC replacement — usually within 7-8 hours.