This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI200X350S, 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 SI200X350S
The AirTAC SI200 Standard Cylinder SI200X350S 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 SAI200X350S, 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 → SAI200X350S
- 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 SI200X350S
The AirTAC SI200X350S is a discontinued double-acting ISO 15552 profile cylinder with a 200mm bore and 350mm stroke. Delivering 15708 N push force at 0.5 MPa via a G3/4 port, it is replaced by the SAI200X350S. This direct upgrade shares the exact ISO 15552 mounting interface, bore, stroke, force and accessories.
The SAI features an upgraded piston seal with two Y-shaped one-way elements for low start-up pressure and long life. The SAI family adds SAIL, SAIF and BSAI lock variants the SI lacked. This -S model has a magnet for CS1-B/DS1-B sensors; the SAI uses current AirTAC switches.
Airtac SI200 Standard Cylinder SI200X350S Technical Specifications
| Model | Airtac SI200 Standard Cylinder SI200X350S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI200X350S |
| 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 SAI200X350S 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 SAI200X350S 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 SI200X350S
| 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 SI200X350S Is Used
Heavy Press Forming
Generates up to 21991 N at 0.7 MPa for stamping and forming dense metal components in automated fabrication lines.
Large Mold Clamping
Secures heavy industrial molds with 15708 N push force at 0.5 MPa, ensuring stability during high-force operations.
Replacing the Airtac SI200 Standard Cylinder SI200X350S with the SAI200X350S
To replace the SI200X350S, order the SAI200X350S. Confirm the ISO 15552 mounting interface, 350mm stroke, G3/4 port (PT/G/NPT), M36x2 rod thread and mounting accessory. The -S magnet enables CS1-B/DS1-B sensors. Sizing both ways: the 160mm bore offers 10053 N [email protected], while the 200mm bore hits 21991 N [email protected]. A plain cylinder drifts on air loss; the cushion only decelerates. For load holding, use an external rod lock, pilot check valve, or the SAIL/BSAI lock variant. With a 350mm stroke, use external guides to prevent rod bending and side-load damage. Rod options include carbon steel, SUS420J2 (A) or SUS304 (B); Viton H seals raise heat to 150 C.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI200X350S
- ✓ 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 SI200X350S FAQ
Yes, the SI200X350S is discontinued. The direct replacement is the AirTAC SAI200X350S. It is dimensionally interchangeable per ISO 15552, matching the 200mm bore, 350mm stroke, 15708 N force, G3/4 port and mounting interface.
The 200mm bore uses a G3/4 port. 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 max of 3204 kgf at 1.0 MPa. Speed is 30-500 mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAI200X350S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI200X350S replacement — usually within 7-8 hours.