This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI200X400FA, 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.
Airtac SI200 Standard Cylinder SI200X400FA
The AirTAC Airtac SI200 Standard Cylinder SI200X400FA is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø200mm bore and 400mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI200X400FA, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ200 mm
- Stroke400 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2.0
- StatusDiscontinued → SAI200X400FA
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac SI200 Standard Cylinder SI200X400FA
The AirTAC SI200X400FA is a discontinued double-acting ISO 15552 profile cylinder with a 200 mm bore and 400 mm stroke. It delivers 15708 N push force at 0.5 MPa through a G3/4 port. AirTAC replaced this legacy unit with the SAI200X400FA, a direct upgrade retaining the exact FA flange mounting, M36x2 rod thread, and 3204 kgf maximum force.
The SAI upgrade features a modernized piston seal using two Y-shaped one-way elements for low start-up pressure and extended life. For load holding, note that a standard cylinder drifts on air loss—the cushion only decelerates. Because this specific SKU lacks the -S magnet, it cannot accept position sensors.
Airtac SI200 Standard Cylinder SI200X400FA Technical Specifications
| Model | Airtac SI200 Standard Cylinder SI200X400FA |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI200X400FA |
| Bore size | Ø200 mm |
| Stroke | 400 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 SAI200X400FA carries the same ISO 15552 ratings. Confirm against the product label before installation. Thread options: PT / G / NPT.
Theoretical Output Force (Ø200mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 15708 N | 15080 N |
| 0.7 MPa | 21991 N | — |
| Max (@1.0 MPa) | 3204 kgf | |
The SAI200X400FA produces the same force from the same bore. Actual usable force is lower than theoretical; size with a margin.
Model Code: Airtac SI200 Standard Cylinder SI200X400FA
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 200 | Bore size in mm. |
| ×400 | 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).
Where the Airtac SI200 Standard Cylinder SI200X400FA Is Used
Heavy Machinery Forming
Drives large press platens and forming tools requiring up to 3204 kgf theoretical max force over a 400 mm travel distance.
Automated Assembly Presses
Provides steady double-acting thrust for seating large automotive or structural components using the FA flange mount.
Replacing the Airtac SI200 Standard Cylinder SI200X400FA with the SAI200X400FA
To replace the SI200X400FA, order the SAI200X400FA. Confirm the ISO 15552 interface, 400 mm stroke, G3/4 port, and FA flange mounting match your existing fixture. Since this SKU has no -S magnet, it cannot support switches; if sensing is needed, select an SAI equivalent with the S suffix. Sizing both ways: stepping down to a 160 mm bore yields 10053 N push at 0.5 MPa, while a 200 mm bore at 0.7 MPa provides 21991 N. For load holding on air loss, use an external pilot check valve or the SAIL/BSAI lock variant. At 400 mm stroke, use external guides to prevent rod bending and side-load damage.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI200X400FA
- ✓ Same bore / stroke / force
- ✓ Port/thread type (PT/G/NPT)
- ✓ Magnet (-S) for sensors?
- ✓ Mounting reused (FA/FB/CA/CB/CR/LB/TC)
Airtac SI200 Standard Cylinder SI200X400FA FAQ
Yes, the SI200X400FA is discontinued. The direct replacement is the SAI200X400FA. It shares the same ISO 15552 mounting interface, 200 mm bore, 400 mm stroke, G3/4 port, and FA flange, fitting existing fixtures perfectly.
It features a G3/4 port. The force ratings are: 15708 N push and 15080 N pull at 0.5 MPa, 21991 N push at 0.7 MPa, 28274 N push at 0.9 MPa, and a theoretical maximum of 3204 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI200X400FA
Send us the quantity and destination. We confirm price, stock and lead time on the SAI200X400FA replacement — usually within 7-8 hours.