This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI80X600SCB, 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 SI80X600SCB is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø80mm bore and 600mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI80X600SCB, which matches its ISO interface, bore, stroke, force and mounting.
The AirTAC SI80X600SCB is a discontinued double-acting ISO 15552 profile cylinder with an 80 mm bore and 600 mm stroke. Delivering 2513 N push force at 0.5 MPa through a G3/8 port, it is replaced by the SAI80X600SCB. This direct upgrade shares the exact ISO 15552 mounting interface, CB clevis, and M20x1.5 rod thread. The SAI features an upgraded piston seal with two Y-shaped one-way elements for low start-up pressure and long life.
The original SI-S magnet supports legacy CS1-B/DS1-B sensors, while the SAI family uses current AirTAC switches. If you need load holding on air loss, explore the SAIL or BSAI lock variants, as standard cushions only decelerate.
| Model | Airtac SI80 Standard Air Cylinder SI80X600SCB |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI80X600SCB |
| Bore size | Ø80 mm |
| Stroke | 600 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 SAI80X600SCB 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 SAI80X600SCB 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. |
| ×600 | 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 heavy sorting gates on packaging lines, utilizing the 2513 N push force to reliably pivot full pallets or redirect bulky product flows.
Raises and lowers loading dock gates.
Secures large workpieces in machining cells. The CB clevis mount accommodates articulation, though an external lock is needed for air-loss safety.
To replace the discontinued SI80X600SCB, order the SAI80X600SCB. Verify the ISO 15552 interface, 80 mm bore, 600 mm stroke, G3/8 port, and CB clevis mounting. The -S magnet equates to legacy CS1-B/DS1-B sensors; the SAI uses current switches. For sizing alternatives, an 80 mm bore yields 2513 N push at 0.5 MPa, whereas a 63 mm bore offers 1559 N. Because this is a 600 mm stroke, use an external guide to prevent rod bending and side-load damage. A plain cylinder drifts on air loss; for secure holding, use an external rod lock, pilot check valve, or the SAIL/BSAI lock variants.
Replacement checklist
Yes, the SI80X600SCB is discontinued. The direct replacement is the SAI80X600SCB. It shares the same ISO 15552 mounting interface, 80 mm bore, 600 mm stroke, output force, G3/8 port, and CB clevis, fitting existing fixtures perfectly.
The 80 mm bore uses a G3/8 port. It delivers 2513 N push and 2268 N pull at 0.5 MPa, 3518 N push at 0.7 MPa, and a theoretical maximum force 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 SAI80X600SCB replacement — usually within 7-8 hours.