This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI200X350FA, 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 SI200X350FA
The AirTAC Airtac SI200 Standard Cylinder SI200X350FA is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø200mm bore and 350mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI200X350FA, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ200 mm
- Stroke350 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2.0
- StatusDiscontinued → SAI200X350FA
- 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 SI200X350FA
The AirTAC SI200X350FA is a discontinued double-acting ISO 15552 profile cylinder with an FA flange mount. Built for heavy-duty thrust, it delivers 15708 N push and 15080 N pull at 0.5 MPa, scaling to 28274 N at 0.9 MPa. AirTAC replaced this EOL unit with the SAI200X350FA, a direct replacement retaining the exact 200 mm bore, 350 mm stroke, G3/4 port, M36x2 rod thread and ISO 15552 mounting interface.
The SAI upgrade features 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 accept a sensor; the legacy SI family used CS1-B/DS1-B switches. For high heat, Viton H seals raise the operating range to 0-150 C.
Airtac SI200 Standard Cylinder SI200X350FA Technical Specifications
| Model | Airtac SI200 Standard Cylinder SI200X350FA |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI200X350FA |
| Bore size | Ø200 mm |
| Stroke | 350 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 SAI200X350FA 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 SAI200X350FA 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 SI200X350FA
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 200 | Bore size in mm. |
| ×350 | 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 SI200X350FA Is Used
Heavy Stamping Press
Drives large tonnage forming dies requiring 21991 N push at 0.7 MPa, utilizing the rigid FA flange to withstand severe impact reactions.
Large Mold Actuation
Shifts heavy industrial molds along the 350 mm path, demanding external guide rails to support the 40 mm rod during extension.
Replacing the Airtac SI200 Standard Cylinder SI200X350FA with the SAI200X350FA
To replace the SI200X350FA, order the SAI200X350FA. Confirm the ISO 15552 FA flange interface, 350 mm stroke, G3/4 port, and M36x2 thread. Because this is a 350 mm stroke on a 40 mm rod, add external guides to prevent rod bending and side-load damage. Sizing both ways: stepping down to a 160 mm bore yields 10053 N push @0.5 MPa, while this 200 mm bore provides 15708 N. A plain cylinder drifts on air loss—the 50 mm cushion only decelerates. For load holding, use an external pilot check valve, or specify the SAIL or BSAI lock variant. The SAI family also adds the SAIF self-valve option (bores 32-100).
Replacement checklist
- ✓ Same ISO 15552 interface → SAI200X350FA
- ✓ 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 SI200X350FA FAQ
Yes, the SI200X350FA is discontinued. The direct replacement is the SAI200X350FA. It is dimensionally interchangeable per ISO 15552, keeping the same 200 mm bore, 350 mm stroke, 15708 N force, G3/4 port and FA flange mount.
It features a G3/4 port. The thrust 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; with a theoretical max of 3204 kgf at 1.0 MPa. Speed is 30-500 mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAI200X350FA
Send us the quantity and destination. We confirm price, stock and lead time on the SAI200X350FA replacement — usually within 7-8 hours.