This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI200BX10S, 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.

The AirTAC Airtac SI200 Standard Cylinder SI200BX10S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø200mm bore and 10mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI200BX10S, which matches its ISO interface, bore, stroke, force and mounting.
The AirTAC SI200BX10S is a discontinued double-acting ISO 15552 profile cylinder featuring a 200 mm bore, 10 mm stroke, and a SUS304 stainless steel rod. Generating 15708 N push force at 0.5 MPa, it is replaced by the SAI200BX10S. This direct upgrade retains the same G3/4 port and ISO 15552 mounting interface, but introduces an upgraded piston seal with two Y-shaped one-way elements for low start-up pressure and long life.
The -S magnet supports legacy CS1-B/DS1-B sensors, while the SAI family uses current AirTAC switches. Note that plain cylinders drift without live air; for load holding, explore the SAIL or BSAI lock variants.
| Model | Airtac SI200 Standard Cylinder SI200BX10S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI200BX10S |
| Bore size | Ø200 mm |
| Stroke | 10 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 SAI200BX10S carries the same ISO 15552 ratings. Confirm against the product label before installation. Thread options: PT / G / NPT.
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 15708 N | 15080 N |
| 0.7 MPa | 21991 N | — |
| Max (@1.0 MPa) | 3204 kgf | |
The SAI200BX10S produces the same force from the same bore. Actual usable force is lower than theoretical; size with a margin.
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 200 | Bore size in mm. |
| ×10 | 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).
Delivers 21991 N at 0.7 MPa for high-force stamping, forming, and riveting tasks requiring minimal stroke.
The SUS304 rod provides corrosion resistance for securely clamping large fabricated components in humid settings.
Short 10 mm stroke provides immediate, high-impact locking force for heavy industrial molds and platens.
To replace this discontinued SI200BX10S, order the SAI200BX10S, confirming the ISO 15552 mounting interface, 200 mm bore, 10 mm stroke, G3/4 port, and SUS304 rod. If downsizing, a 160 mm bore yields 10053 N push at 0.5 MPa; if upsizing is possible, you are already at the maximum standard bore. The -S magnet allows position sensing with CS1-B/DS1-B switches. Because the cushion only decelerates, do not rely on it to hold loads—use an external pilot check valve or the SAIL/BSAI lock variants for secure holding.
Replacement checklist
Yes, the SI200BX10S is discontinued. The direct replacement is the SAI200BX10S. It features the same ISO 15552 mounting interface, 200 mm bore, 10 mm stroke, output force, and G3/4 port, fitting existing fixtures perfectly.
It features a G3/4 port and generates 15708 N push and 15080 N pull at 0.5 MPa. At 0.7 MPa push is 21991 N, at 0.9 MPa it is 28274 N, with a theoretical max of 3204 kgf at 1.0 MPa.
Send us the quantity and destination. We confirm price, stock and lead time on the SAI200BX10S replacement — usually within 7-8 hours.