This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI200X350SH, 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 SI200X350SH
The AirTAC SI200 Standard Cylinder SI200X350SH 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 SAI200X350SH, 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 → SAI200X350SH
- 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 SI200X350SH
The AirTAC SI200X350SH is a discontinued double-acting ISO 15552 profile cylinder featuring a 200 mm bore and 350 mm stroke. Built with an extruded aluminum barrel and adjustable air cushions at both ends, it delivers 15708 N of push force at 0.5 MPa. This specific configuration includes a piston magnet for legacy CS1-B/DS1-B sensors and a high-temperature Viton H seal rated for 0 to 150 C. The G3/4 port and M36x2 rod thread are fixed by the bore size.
Because the SI line is end-of-life, you should order the direct replacement SAI200X350SH. It shares the exact ISO 15552 mounting interface, bore, stroke, output force, port, and accessories, fitting existing fixtures perfectly. The SAI upgrade introduces a two Y-shaped one-way piston seal for low start-up pressure and long life.
Airtac SI200 Standard Cylinder SI200X350SH Technical Specifications
| Model | Airtac SI200 Standard Cylinder SI200X350SH |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI200X350SH |
| 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 SAI200X350SH 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 SAI200X350SH 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 SI200X350SH
| 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 SI200X350SH Is Used
Heavy Stamp Press Feed
Drives large metal blanks into heavy-duty stamping presses using 15708 N of thrust at 0.5 MPa.
Foundry Mold Clamping
Secures heavy foundry molds in high-temperature environments using the Viton H seal rated up to 150 C.
Replacing the Airtac SI200 Standard Cylinder SI200X350SH with the SAI200X350SH
To replace the discontinued SI200X350SH, order the SAI200X350SH. Confirm the ISO 15552 mounting interface (LB, FA, CA, TC, etc.), the 350 mm stroke, G3/4 port, and the high-temp Viton H seal. The -S magnet equips it for current AirTAC switches, replacing the legacy CS1-B/DS1-B set. If 21991 N at 0.7 MPa is insufficient, step up to a larger bore; if it is excessive, a 160 mm bore offers 10053 N at 0.5 MPa. Note that a plain cylinder drifts on air loss because the cushion only decelerates; for load holding, use an external rod lock, a pilot check valve, or the SAIL/BSAI lock variants. Finally, at 350 mm stroke, prevent rod bending by guiding the load externally to avoid side-load stress.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI200X350SH
- ✓ 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 SI200X350SH FAQ
Yes, the SI200X350SH is discontinued. The direct replacement is the SAI200X350SH. It is dimensionally interchangeable per ISO 15552, retaining the same 200 mm bore, 350 mm stroke, G3/4 port, and mounting interface.
It features a G3/4 air port and an M36x2 rod thread. Force output is 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 SAI200X350SH
Send us the quantity and destination. We confirm price, stock and lead time on the SAI200X350SH replacement — usually within 7-8 hours.