This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI200X800FA, 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 SI200X800FA is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø200mm bore and 800mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI200X800FA, which matches its ISO interface, bore, stroke, force and mounting.
The AirTAC SI200X800FA is a discontinued double-acting ISO 15552 profile cylinder with an extruded aluminum barrel, delivering a robust 15708 N push force at 0.5 MPa. AirTAC replaced this end-of-life unit with the SAI200X800FA. This direct successor preserves the exact 200 mm bore, 800 mm stroke, G3/4 port, M36x2 rod thread, and FA flange mounting interface, fitting 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 this specific SKU lacks a magnet (-S) and cannot support CS1-B/DS1-B sensors. If you need load holding on air loss, explore the SAIL or BSAI lock variants, as standard cushions only decelerate.
| Model | Airtac SI200 Standard Cylinder SI200X800FA |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI200X800FA |
| Bore size | Ø200 mm |
| Stroke | 800 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 SAI200X800FA 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 SAI200X800FA 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. |
| ×800 | 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 metal forming and stamping presses requiring up to 28274 N of thrust at 0.9 MPa for deep draw operations.
Shifts massive diverter gates on bulk material conveyor lines, utilizing the 50 mm adjustable cushions to stop 800 mm strokes smoothly.
To replace the SI200X800FA, order the SAI200X800FA. Verify your ISO 15552 FA flange interface, 200 mm bore, 800 mm stroke, and G3/4 port. Because this SKU lacks a magnet, it cannot accept position sensors; if sensing is required, specify an SAI model with the -S suffix for current AirTAC switch compatibility. Sizing checks: the neighboring 160 mm bore yields 10053 N push at 0.5 MPa, while stepping up is unnecessary given this bore's 3204 kgf maximum at 1.0 MPa. For the 800 mm stroke, external guides are strongly recommended to prevent rod bending and manage side loads. Remember, a standard cylinder drifts without air; for static holding, use an external rod lock, pilot check valve, or the BSAI clamp-lock variant.
Replacement checklist
Yes, the SI200X800FA is discontinued. The direct replacement is the SAI200X800FA. It is dimensionally interchangeable per ISO 15552, retaining the same 200 mm bore, 800 mm stroke, G3/4 port, and FA flange mount.
It delivers 15708 N push and 15080 N pull at 0.5 MPa, 21991 N push at 0.7 MPa, and 28274 N push at 0.9 MPa. The theoretical max force 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 SAI200X800FA replacement — usually within 7-8 hours.