This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI200X275S, 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 SI200X275S
The AirTAC SI200 Standard Cylinder SI200X275S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø200mm bore and 275mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI200X275S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ200 mm
- Stroke275 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2.0
- StatusDiscontinued → SAI200X275S
- 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 SI200X275S
The AirTAC SI200X275S is a discontinued double-acting ISO 15552 profile cylinder with a 200mm bore and 275mm stroke, delivering 15708 N push force at 0.5 MPa. It is directly replaced by the SAI200X275S. This direct upgrade shares the exact ISO 15552 mounting interface, G3/4 port, and M36x2 rod thread, fitting existing fixtures perfectly.
The SAI features an upgraded piston seal with two Y-shaped one-way elements for low start-up pressure and long life. The SAI family also adds SAIL lock and BSAI clamp-lock variants the SI lacked. Your -S magnet works with legacy CS1-B/DS1-B sensors.
Airtac SI200 Standard Cylinder SI200X275S Technical Specifications
| Model | Airtac SI200 Standard Cylinder SI200X275S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI200X275S |
| Bore size | Ø200 mm |
| Stroke | 275 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 SAI200X275S 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 SAI200X275S 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 SI200X275S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 200 | Bore size in mm. |
| ×275 | 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 SI200X275S Is Used
Heavy Stamping Press
Drives large heavy-duty stamping dies requiring 21991 N push force at 0.7 MPa to form thick metal plates securely.
Injection Mold Clamping
Provides massive clamping force for large industrial injection molding tools, utilizing the 3204 kgf maximum theoretical output.
Replacing the Airtac SI200 Standard Cylinder SI200X275S with the SAI200X275S
To replace the SI200X275S, order the SAI200X275S. Verify the ISO 15552 mounting interface, 275mm stroke, G3/4 port (PT/G/NPT), and your specific mounting accessory. The -S magnet supports legacy CS1-B/DS1-B sensors, though the SAI uses current AirTAC switches. This 200mm bore yields 15708 N push at 0.5 MPa; dropping to a 160mm bore gives 10053 N. For load holding, note a plain cylinder drifts without air—the cushion only decelerates. Use an external rod lock, pilot check valve, or the SAIL/BSAI lock variant. At 275mm stroke, guide rods are advised to prevent rod bending under side loads.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI200X275S
- ✓ 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 SI200X275S FAQ
Yes, the SI200X275S is discontinued. The direct replacement is the SAI200X275S. It is dimensionally interchangeable per ISO 15552, retaining the same 200mm bore, 275mm stroke, force, G3/4 port, and mounting interface.
The G3/4 port bore delivers 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 3204 kgf max at 1.0 MPa. It operates at 30-500 mm/s with a 50mm adjustable cushion.
Related AirTAC SAI Cylinders
Request a Quote for the SAI200X275S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI200X275S replacement — usually within 7-8 hours.