This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI200X325S, 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 SI200X325S
The AirTAC SI200 Standard Cylinder SI200X325S 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 SAI200X325S, 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 → SAI200X325S
- 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 SI200X325S
The AirTAC SI200X325S is a discontinued double-acting ISO 15552 profile cylinder. Delivering 15708 N push force at 0.5 MPa through a 200 mm bore and 325 mm stroke, it features a G3/4 port and a 40 mm carbon steel rod. The direct replacement is the SAI200X325S, matching the exact ISO 15552 mounting interface, output force, and accessories.
The SAI upgrade introduces a two Y-shaped one-way piston seal for low start-up pressure and long life. The SI200X325S includes a magnet for CS1-B/DS1-B sensors, while the SAI family adds SAIL and BSAI lock variants the SI lacked.
Airtac SI200 Standard Cylinder SI200X325S Technical Specifications
| Model | Airtac SI200 Standard Cylinder SI200X325S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI200X325S |
| 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 SAI200X325S 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 SAI200X325S 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 SI200X325S
| 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 SI200X325S Is Used
Heavy Press Operations
Drives large stamping and forming presses requiring up to 15708 N of push force at 0.5 MPa with stable 325 mm travel.
Large Material Handling
Indexes heavy structural beams or large palletized loads across 325 mm cycles in robust manufacturing environments.
Replacing the Airtac SI200 Standard Cylinder SI200X325S with the SAI200X325S
To replace the SI200X325S, order the SAI200X325S. Confirm the ISO 15552 mounting interface, 325 mm stroke, G3/4 port, and your mounting accessory (LB, FA, CA, TC). The -S suffix means a magnet is present for CS1-B/DS1-B switches; the SAI uses current AirTAC switches. Sizing both ways: the 160 mm bore offers 10053 N push at 0.5 MPa, while the 200 mm bore hits 21991 N at 0.7 MPa. A plain cylinder drifts without live air; for load holding, use an external rod lock, pilot check valve, or the SAIL/BSAI variants. Because the 325 mm stroke is long, use external guides to prevent rod bending and side loads.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI200X325S
- ✓ 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 SI200X325S FAQ
Yes, the AirTAC SI200X325S is discontinued. The direct replacement is the SAI200X325S. It is dimensionally interchangeable per ISO 15552, retaining the same 200 mm bore, 325 mm stroke, G3/4 port, and mounting interface, so it drops directly into existing fixtures.
This double-acting cylinder has a G3/4 port, a 40 mm rod, and an M36x2 rod thread. 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, and a theoretical maximum force of 3204 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI200X325S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI200X325S replacement — usually within 7-8 hours.