This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI200X600FA, 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 Airtac SI200 Standard Cylinder SI200X600FA is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø200mm bore and 600mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI200X600FA, which matches its ISO interface, bore, stroke, force and mounting.
The AirTAC SI200X600FA is a discontinued double-acting ISO 15552 profile cylinder with a 200mm bore and 600mm stroke. It delivers 15708 N push and 15080 N pull at 0.5 MPa, peaking at 3204 kgf. The direct replacement is the SAI200X600FA, matching the G3/4 port, M36x2 rod thread, 50mm cushions and FA flange mount exactly.
The SAI upgrade introduces a two Y-shaped one-way piston seal for low start-up pressure and long life. Note this SKU lacks the -S magnet and cannot take a sensor; legacy -S versions used CS1-B/DS1-B switches. For high heat, Viton H seals raise the temperature limit to 150 C.
| Model | Airtac SI200 Standard Cylinder SI200X600FA |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI200X600FA |
| Bore size | Ø200 mm |
| Stroke | 600 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 SAI200X600FA 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 SAI200X600FA 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. |
| ×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 large forming presses requiring up to 21991 N of push force at 0.7 MPa, utilizing the 50mm adjustable cushions to absorb heavy kinetic energy.
Actuates heavy injection mold tooling into position using the FA flange mount, taking advantage of the robust 40mm carbon steel rod.
To replace the SI200X600FA, order the SAI200X600FA. It is dimensionally interchangeable per the ISO 15552 mounting interface, retaining the identical 200mm bore, 600mm stroke, 15708 N force, G3/4 port and FA flange. Because this is a non-magnet SKU, it cannot support position sensing. If your fixture needs load holding on air loss, note that the standard cushion only decelerates; you must add an external rod lock, pilot check valve, or step up to the SAIL or BSAI lock variant. For sizing, neighbouring bores drop to 160mm (10053 N @0.5 MPa). Finally, at 600mm stroke, prevent rod bending by guiding the load externally to avoid side-loading.
Replacement checklist
Yes, the SI200X600FA is discontinued. The direct replacement is the SAI200X600FA. It shares the same ISO 15552 mounting interface, 200mm bore, 600mm stroke, output force, G3/4 port and FA flange, fitting existing fixtures perfectly.
The G3/4 port bore delivers a push of 15708 N and pull of 15080 N at 0.5 MPa. At 0.7 MPa push is 21991 N, at 0.9 MPa it is 28274 N, and the theoretical max is 3204 kgf at 1.0 MPa. Operating speed is 30-500 mm/s.
Send us the quantity and destination. We confirm price, stock and lead time on the SAI200X600FA replacement — usually within 7-8 hours.