This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI200BX325, 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 SI200BX325
The AirTAC SI200 Standard Cylinder SI200BX325 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 SAI200BX325, 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 → SAI200BX325
- 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 SI200BX325
The AirTAC SI200BX325 is a discontinued double-acting ISO 15552 profile cylinder with a 200mm bore and 325mm stroke. Delivering 15708N push force at 0.5MPa via a G3/4 port, it is replaced by the SAI200BX325. This direct upgrade shares the exact ISO 15552 mounting interface, bore, stroke, force, and port size. The SAI features an upgraded piston seal with two Y-shaped one-way elements for low start-up pressure and long life. This specific SKU lacks a magnet, meaning it cannot accept a CS1-B/DS1-B sensor.
The SAI family also introduces lock and valve variants the SI lacked, like the SAIL and BSAI clamp-lock. Furthermore, while the standard carbon steel rod is default, this model uses the SUS304 stainless rod option for corrosion resistance.
Airtac SI200 Standard Cylinder SI200BX325 Technical Specifications
| Model | Airtac SI200 Standard Cylinder SI200BX325 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI200BX325 |
| 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 SAI200BX325 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 SAI200BX325 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 SI200BX325
| 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 SI200BX325 Is Used
Heavy Stamping
Drives large presses and stamping fixtures requiring high force, utilizing the 15708N push capacity at 0.5MPa.
Clamp Systems
Secures large fabricated components in automated welding lines, relying on the robust 200mm bore profile.
Replacing the Airtac SI200 Standard Cylinder SI200BX325 with the SAI200BX325
To replace the discontinued SI200BX325, order the SAI200BX325, confirming the ISO 15552 mounting interface, 325mm stroke, G3/4 port, and mounting accessory. Because this SKU has no -S magnet, it cannot support position sensing; if sensing is needed, order an SAI with the magnet option. The plain cylinder does not hold load on air loss; the 50mm adjustable cushion only decelerates. For load holding, use an external rod lock, pilot check valve, or the SAIL/BSAI lock variant. With a 325mm stroke, use external guides to prevent rod bending and side loads. If downsizing, a 160mm bore yields 10053N at 0.5MPa; if upsizing, this 200mm bore reaches 21991N at 0.7MPa.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI200BX325
- ✓ 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 SI200BX325 FAQ
Yes, the SI200BX325 is discontinued. The direct replacement is the SAI200BX325. It shares the same ISO 15552 mounting interface, 200mm bore, 325mm stroke, output force, and G3/4 port, fitting existing fixtures perfectly.
The G3/4 port supplies a 15708N push and 15080N pull force at 0.5MPa. At 0.7MPa push is 21991N, and 28274N at 0.9MPa. The theoretical max force is 3204kgf at 1.0MPa. Operating speed is 30-500mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAI200BX325
Send us the quantity and destination. We confirm price, stock and lead time on the SAI200BX325 replacement — usually within 7-8 hours.