This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI100X200FA, 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 SI100 Standard Cylinder SI100X200FA is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø100mm bore and 200mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI100X200FA, which matches its ISO interface, bore, stroke, force and mounting.
The AirTAC SI100X200FA is a discontinued double-acting ISO 15552 profile cylinder with an FA flange mount. Delivering 3927 N push force at 0.5 MPa through a G1/2 port, it is replaced by the SAI100X200FA. This direct upgrade matches the original 100 mm bore, 200 mm stroke, and mounting interface.
The SAI uses an upgraded two Y-shaped one-way piston seal for low start-up pressure. This SKU lacks a magnet, so it cannot take a sensor. For high heat, Viton H seals raise the temperature limit to 150 C.
| Model | Airtac SI100 Standard Cylinder SI100X200FA |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI100X200FA |
| Bore size | Ø100 mm |
| Stroke | 200 mm |
| Acting type | Double acting |
| Port size | G1/2 |
| 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 SAI100X200FA 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 | 3927 N | 3682 N |
| 0.7 MPa | 5498 N | — |
| Max (@1.0 MPa) | 801 kgf | |
The SAI100X200FA 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). |
|---|---|
| 100 | Bore size in mm. |
| ×200 | 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).
Ideal for securing heavy structural components during machining, using the 3927 N push force to hold parts firmly against the fixture.
Drives loaded pallets downward in packaging lines, where the 3681 N pull force at 0.5 MPa provides controlled descent under gravity.
Actuates large diverter arms on high-throughput conveyor systems, moving heavy parcels reliably with a 200 mm stroke.
To replace the SI100X200FA, order the SAI100X200FA. Confirm the ISO 15552 FA flange interface, 200 mm stroke, G1/2 port (PT/G/NPT), and M20x1.5 rod thread. Since this SKU has no -S magnet, it cannot accept CS1-B/DS1-B sensors. For sizing, the 100 mm bore yields 3927 N push @0.5 MPa; dropping to an 80 mm bore gives 2513 N, while a 125 mm bore yields 6136 N. Note that a plain cylinder drifts on air loss; the cushion only decelerates. For load holding, use an external pilot check valve or the SAIL/BSAI lock variant. The SAIF variant adds a built-in valve if needed.
Replacement checklist
Yes, the SI100X200FA is discontinued. The direct replacement is the SAI100X200FA. It is dimensionally interchangeable per the ISO 15552 mounting interface, retaining the same 100 mm bore, 200 mm stroke, output force, G1/2 port, and FA flange mounting.
The bore is 100 mm with a 25 mm rod. Forces are: push 3927 N and pull 3681 N at 0.5 MPa; push 5497 N at 0.7 MPa; push 7068 N at 0.9 MPa; and a theoretical max of 801 kgf at 1.0 MPa. Operating speed is 30-800 mm/s. The air cushion is 36 mm at each end.
Send us the quantity and destination. We confirm price, stock and lead time on the SAI100X200FA replacement — usually within 7-8 hours.