This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI200BX475S, 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 SI200BX475S
The AirTAC SI200 Standard Cylinder SI200BX475S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø200mm bore and 475mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI200BX475S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ200 mm
- Stroke475 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2.0
- StatusDiscontinued → SAI200BX475S
- 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 SI200BX475S
The AirTAC SI200BX475S is a discontinued double-acting ISO 15552 profile cylinder with a 200mm bore and 475mm stroke. It delivers 15708 N push force at 0.5 MPa. The direct replacement is the SAI200BX475S, matching the exact bore, stroke, G3/4 port, M36x2 thread and ISO 15552 mounting interface.
The SAI upgrade features a two Y-shaped one-way piston seal for low start-up pressure and long life. This -B variant uses a SUS304 stainless rod, and the -S magnet works with CS1-B/DS1-B sensors.
Airtac SI200 Standard Cylinder SI200BX475S Technical Specifications
| Model | Airtac SI200 Standard Cylinder SI200BX475S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI200BX475S |
| Bore size | Ø200 mm |
| Stroke | 475 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 SAI200BX475S 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 SAI200BX475S 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 SI200BX475S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 200 | Bore size in mm. |
| ×475 | 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 SI200BX475S Is Used
Heavy Pressing
Drives large stamping and forming presses requiring up to 21991 N of thrust at 0.7 MPa.
Industrial Clamping
Secures large fabricated steel structures during welding and machining operations.
Replacing the Airtac SI200 Standard Cylinder SI200BX475S with the SAI200BX475S
To replace the SI200BX475S, order the SAI200BX475S. Verify the ISO 15552 mounting interface, 475mm stroke, G3/4 port, and -S magnet for CS1-B/DS1-B switches. Sizing both ways: a 160mm bore yields 10053 N push at 0.5 MPa, while this 200mm bore hits 21991 N at 0.7 MPa. The 475mm stroke requires external guides to prevent rod bending. The cushion only decelerates; for load holding on air loss, use an external rod lock or the SAIL/BSAI lock variant.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI200BX475S
- ✓ 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 SI200BX475S FAQ
Yes, the SI200BX475S is discontinued. The direct replacement is the SAI200BX475S. It is dimensionally interchangeable per ISO 15552, retaining the same 200mm bore, 475mm stroke, output force, G3/4 port and mounting interface.
It features a G3/4 air 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.
Related AirTAC SAI Cylinders
Request a Quote for the SAI200BX475S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI200BX475S replacement — usually within 7-8 hours.