This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI200X1350S, 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 SI200 Standard Cylinder SI200X1350S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø200mm bore and 1350mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI200X1350S, which matches its ISO interface, bore, stroke, force and mounting.
The AirTAC SI200X1350S is a discontinued double-acting ISO 15552 profile cylinder with a 200 mm bore and 1350 mm stroke. Delivering 15708 N push force at 0.5 MPa via a G3/4 port, it is directly replaced by the SAI200X1350S. This direct upgrade shares the exact ISO 15552 mounting interface, M36x2 rod thread, and 50 mm cushions, fitting existing fixtures seamlessly.
The SAI upgrade features a two Y-shaped one-way piston seal for low start-up pressure and long life. The SAI family adds SAIL, SAIF, and BSAI lock variants absent in the SI line. Your -S magnet works with legacy CS1-B/DS1-B sensors, while the SAI uses current AirTAC switches.
| Model | Airtac SI200 Standard Cylinder SI200X1350S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI200X1350S |
| Bore size | Ø200 mm |
| Stroke | 1350 mm |
| Acting type | Double acting |
| Port size | G3/4 |
| Rod thread | M36×2.0 |
| 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 – 500 mm/s |
| Cushion | Adjustable, 50 mm |
| Max standard stroke | Up to 1500 mm |
Specifications follow the official AirTAC SI datasheet (now discontinued). The SAI200X1350S 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 | 15708 N | 15080 N |
| 0.7 MPa | 21991 N | — |
| Max (@1.0 MPa) | 3204 kgf | |
The SAI200X1350S 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). |
|---|---|
| 200 | Bore size in mm. |
| ×1350 | 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 industrial presses requiring 21991 N push force at 0.7 MPa, utilizing the adjustable 50 mm cushions to absorb heavy kinetic energy.
Executes 1350 mm strokes to push heavy components between conveyor sections, relying on external guides to prevent rod bending over long extensions.
To replace the SI200X1350S, order the SAI200X1350S. Confirm the ISO 15552 mounting interface, G3/4 port, M36x2 thread, and your specific mounting accessory (like TC trunnion or CA clevis). The -S magnet enables CS1-B/DS1-B sensors. If you need to size down, the 160 mm bore yields 10053 N push at 0.5 MPa; sizing up is not available as 200 mm is the maximum. For load holding, note that a plain cylinder drifts without live air—use an external rod lock, pilot check valve, or the SAIL/BSAI lock variant. Because the 1350 mm stroke is very long, use external guides to prevent rod bending and side-load damage.
Replacement checklist
Yes, the SI200X1350S is discontinued. The direct replacement is the SAI200X1350S. It shares the identical ISO 15552 mounting interface, 200 mm bore, 1350 mm stroke, output force, G3/4 port, and 50 mm cushion, fitting your existing fixtures perfectly.
At 0.5 MPa it provides 15708 N push and 15080 N pull force. At 0.7 MPa push is 21991 N, and at 0.9 MPa it is 28274 N. The theoretical max force is 3204 kgf at 1.0 MPa. Operating pressure is 0.15-1.0 MPa, speed is 30-500 mm/s, and the G3/4 port handles the air flow.
Send us the quantity and destination. We confirm price, stock and lead time on the SAI200X1350S replacement — usually within 7-8 hours.