This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI200BX275S, 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 SI200BX275S
The AirTAC SI200 Standard Cylinder SI200BX275S 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 SAI200BX275S, 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 → SAI200BX275S
- 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 SI200BX275S
The AirTAC SI200BX275S is a discontinued double-acting ISO 15552 profile cylinder featuring a 200 mm bore and 275 mm stroke. Delivering 15708 N push force at 0.5 MPa, it is replaced by the SAI200BX275S. This direct upgrade maintains the exact G3/4 port, M36x2 rod thread, and 50 mm cushions, fitting existing fixtures perfectly.
The SAI replacement features an upgraded piston seal with two Y-shaped one-way elements for lower start-up pressure and longer life. This -S model includes a magnet for legacy CS1-B/DS1-B sensors. The -B rod option specifies SUS304 stainless steel for corrosion resistance, and Viton H seals raise operating temperature to 150 C.
Airtac SI200 Standard Cylinder SI200BX275S Technical Specifications
| Model | Airtac SI200 Standard Cylinder SI200BX275S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI200BX275S |
| 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 SAI200BX275S 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 SAI200BX275S 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 SI200BX275S
| 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 SI200BX275S Is Used
Heavy Press Stamping
Drives large press dies requiring 21991 N output at 0.7 MPa to form thick steel plates.
Pallet Lifting Arms
Actuates heavy-duty pallet lifting arms where the 801 kg vertical lift capacity is essential.
Injection Mold Ejection
Ejects large automotive injection molds using the 50 mm adjustable cushions to brake smoothly.
Replacing the Airtac SI200 Standard Cylinder SI200BX275S with the SAI200BX275S
To replace the SI200BX275S, order the SAI200BX275S. Confirm the ISO 15552 mounting interface (LB, FA, TC, etc.), the 275 mm stroke, G3/4 port, and the -S magnet for current AirTAC switches. If downsizing, a 160 mm bore yields 10053 N push at 0.5 MPa; if upsizing is impossible, note the theoretical max is 3204 kgf at 1.0 MPa. This cylinder does not hold load without live air; for fail-safe holding, use an external pilot check valve or the SAIL/BSAI lock variant. At 275 mm stroke, guide external rods to prevent side-load bending on the 40 mm piston rod.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI200BX275S
- ✓ 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 SI200BX275S FAQ
Yes, the SI200BX275S is discontinued. The direct replacement is the SAI200BX275S. It is dimensionally interchangeable per ISO 15552, keeping the same 200 mm bore, 275 mm stroke, force, G3/4 port and mounting accessories.
It operates at 30-500 mm/s. Force ratings are: push 15708 N and pull 15080 N at 0.5 MPa, push 21991 N at 0.7 MPa, push 28274 N at 0.9 MPa, and a theoretical max of 3204 kgf at 1.0 MPa. It uses a G3/4 port.
Related AirTAC SAI Cylinders
Request a Quote for the SAI200BX275S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI200BX275S replacement — usually within 7-8 hours.