This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI200X25FA, 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 SI200X25FA
The AirTAC Airtac SI200 Standard Cylinder SI200X25FA is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø200mm bore and 25mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI200X25FA, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ200 mm
- Stroke25 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2.0
- StatusDiscontinued → SAI200X25FA
- 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 SI200X25FA
The AirTAC SI200X25FA is a discontinued double-acting ISO 15552 profile cylinder with a 200 mm bore and 25 mm stroke. Delivering 15708 N push force at 0.5 MPa through a G3/4 port, it is replaced by the SAI200X25FA. This direct upgrade shares the exact FA flange mounting interface, M36x2 rod thread, and output force.
The SAI replacement features an upgraded piston seal with two Y-shaped one-way elements for low start-up pressure and long life. This SKU lacks the -S magnet, so it cannot accept CS1-B/DS1-B sensors. For high heat, Viton H seals raise the limit to 150 C.
Airtac SI200 Standard Cylinder SI200X25FA Technical Specifications
| Model | Airtac SI200 Standard Cylinder SI200X25FA |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI200X25FA |
| Bore size | Ø200 mm |
| Stroke | 25 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 SAI200X25FA 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 SAI200X25FA 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 SI200X25FA
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 200 | Bore size in mm. |
| ×25 | 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 SI200X25FA Is Used
Heavy Press Operations
Generates 21991 N at 0.7 MPa for high-tonnage stamping, forming, and riveting in heavy industrial presses.
Large Mold Clamping
Provides the massive 15708 N push force required to secure large injection molds and heavy fabrication tooling safely.
Industrial Forging
Short 25 mm stroke delivers rapid, extreme-force impacts for metal forging and heavy-duty upset forging machinery.
Replacing the Airtac SI200 Standard Cylinder SI200X25FA with the SAI200X25FA
To replace this SI200X25FA, order the SAI200X25FA. Confirm the ISO 15552 FA flange interface, 200 mm bore, 25 mm stroke, and G3/4 port. Since this SKU lacks the -S magnet, it cannot support position sensing. For sizing, the 160 mm neighbor bore yields 10053 N [email protected], while this 200 mm bore hits 21991 N at 0.7 MPa. The 50 mm cushion decelerates the load but does not hold it on air loss; for load holding, specify an external pilot check valve or the SAIL/BSAI lock variants. The 40 mm carbon steel rod handles the 25 mm stroke without side-load guides.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI200X25FA
- ✓ 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 SI200X25FA FAQ
Yes, the SI200X25FA is discontinued. The direct replacement is the SAI200X25FA. It shares the identical ISO 15552 FA flange mounting interface, 200 mm bore, 25 mm stroke, output force, and G3/4 port, fitting existing fixtures perfectly.
The 200 mm 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; with 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 SAI200X25FA
Send us the quantity and destination. We confirm price, stock and lead time on the SAI200X25FA replacement — usually within 7-8 hours.