This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI200X250FA, 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 SI200X250FA
The AirTAC Airtac SI200 Standard Cylinder SI200X250FA is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø200mm bore and 250mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI200X250FA, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ200 mm
- Stroke250 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2.0
- StatusDiscontinued → SAI200X250FA
- 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 SI200X250FA
The AirTAC SI200X250FA is a discontinued double-acting ISO 15552 profile cylinder with a 200mm bore and 250mm stroke. Built with an extruded aluminum barrel, it delivers 15708 N push and 15080 N pull at 0.5 MPa. AirTAC replaced this legacy unit with the SAI200X250FA. This direct upgrade retains the exact FA flange mounting, G3/4 port, M36x2 rod thread and 50mm cushions, fitting existing fixtures perfectly.
The SAI replacement introduces an upgraded piston seal with two Y-shaped one-way elements for low start-up pressure and extended life. For load-holding, note that a plain cylinder drifts on air loss—the cushion only decelerates—so use an external rod lock or pilot check valve. This non-magnet SKU cannot take a sensor.
Airtac SI200 Standard Cylinder SI200X250FA Technical Specifications
| Model | Airtac SI200 Standard Cylinder SI200X250FA |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI200X250FA |
| Bore size | Ø200 mm |
| Stroke | 250 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 SAI200X250FA 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 SAI200X250FA 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 SI200X250FA
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 200 | Bore size in mm. |
| ×250 | 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 SI200X250FA Is Used
Heavy Press Operations
Generates 21991 N at 0.7 MPa for high-force stamping, forming, and pressing tasks in heavy industrial manufacturing.
Automated Clamping
Delivers up to 3204 kgf at 1.0 MPa for securing massive workpieces during heavy machining and fabrication processes.
Replacing the Airtac SI200 Standard Cylinder SI200X250FA with the SAI200X250FA
To replace the SI200X250FA, order the SAI200X250FA. Confirm the ISO 15552 FA flange interface, 200mm bore, 250mm stroke, G3/4 port (PT/G/NPT thread options), and carbon steel rod. Since this SKU lacks the -S magnet, it cannot accept CS1-B/DS1-B sensors; order a magnet-equipped version if position detection is needed. For sizing, this 200mm bore yields 15708 N at 0.5 MPa; if less force is required, a 160mm bore gives 10053 N, or a 125mm bore provides 6136 N. If more force is needed, 1.0 MPa yields 3204 kgf. For load holding on air loss, select the SAIL or BSAI lock variant, or add an external pilot check valve. With a 250mm stroke, side-load is minimal, but always ensure rigid guide alignment to prevent rod bending.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI200X250FA
- ✓ 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 SI200X250FA FAQ
Yes, the SI200X250FA is discontinued. The direct replacement is the SAI200X250FA. It is dimensionally interchangeable per ISO 15552, matching the 200mm bore, 250mm stroke, FA flange mount, G3/4 port, and output force.
The G3/4 port feeds a 40mm rod. 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 maximum theoretical force of 3204 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI200X250FA
Send us the quantity and destination. We confirm price, stock and lead time on the SAI200X250FA replacement — usually within 7-8 hours.