This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI200AX325S, 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 SI200AX325S
The AirTAC SI200 Standard Cylinder SI200AX325S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø200mm bore and 325mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI200AX325S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ200 mm
- Stroke325 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2.0
- StatusDiscontinued → SAI200AX325S
- 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 SI200AX325S
The AirTAC SI200AX325S is a discontinued double-acting ISO 15552 profile cylinder featuring a 200mm bore and 325mm stroke. It delivers 15708 N push force at 0.5 MPa. The direct replacement is the SAI200AX325S, matching the exact bore, stroke, G3/4 port, and ISO 15552 mounting interface. This SUS420J2 stainless rod variant (-A) includes a piston magnet (-S) for CS1-B/DS1-B sensors.
The SAI upgrade introduces a two Y-shaped one-way piston seal for low start-up pressure and extended life. The SAI family also adds SAIL, SAIF, and BSAI lock variants absent in the legacy line.
Airtac SI200 Standard Cylinder SI200AX325S Technical Specifications
| Model | Airtac SI200 Standard Cylinder SI200AX325S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI200AX325S |
| Bore size | Ø200 mm |
| Stroke | 325 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 SAI200AX325S 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 SAI200AX325S 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 SI200AX325S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 200 | Bore size in mm. |
| ×325 | 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 SI200AX325S Is Used
Heavy Stamping
Drives large presses and stamping dies requiring 15708 N at 0.5 MPa, utilizing the 325mm stroke to clear bulky tooling.
Wood Processing
Actuates large veneer presses or log positioning gates, relying on the SUS420J2 rod for humid environments.
Replacing the Airtac SI200 Standard Cylinder SI200AX325S with the SAI200AX325S
To replace the SI200AX325S, order the SAI200AX325S. Verify the ISO 15552 mounting interface, 325mm stroke, G3/4 port, and the -A SUS420J2 rod. The -S magnet allows current AirTAC switches to replace legacy CS1-B/DS1-B sensors. If downsizing, a 160mm bore yields 10053 N at 0.5 MPa; if upsizing is impossible, 0.7 MPa yields 21991 N. At 325mm stroke, use external guides to prevent rod bending. The cushion only decelerates; for load holding on air loss, use an external rod lock, pilot check valve, or the SAIL/BSAI lock variant.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI200AX325S
- ✓ 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 SI200AX325S FAQ
Yes, the SI200AX325S is discontinued. The direct replacement is the SAI200AX325S. It shares the identical ISO 15552 mounting interface, 200mm bore, 325mm stroke, output force, and G3/4 port, fitting existing fixtures perfectly.
At 0.5 MPa, push force is 15708 N and pull is 15080 N. At 0.7 MPa push is 21991 N, and at 0.9 MPa it is 28274 N. The theoretical max is 3204 kgf at 1.0 MPa. Operating speed is 30-500 mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAI200AX325S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI200AX325S replacement — usually within 7-8 hours.