This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI200BX210, 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 SI200BX210
The AirTAC Airtac SI200 Standard Cylinder SI200BX210 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø200mm bore and 210mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI200BX210, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ200 mm
- Stroke210 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2.0
- StatusDiscontinued → SAI200BX210
- 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 SI200BX210
The AirTAC SI200BX210 is a discontinued double-acting ISO 15552 profile cylinder with a 200 mm bore and 210 mm stroke, delivering 15708 N of push force at 0.5 MPa via its G3/4 port. AirTAC replaced this legacy unit with the SAI200BX210, a direct upgrade sharing the exact ISO 15552 mounting interface, M36x2 rod thread, and 50 mm cushions. The SAI family introduces an upgraded piston seal utilizing two Y-shaped one-way elements for lower start-up pressure and extended life.
Because this SKU lacks the -S magnet, it cannot accept position switches like the legacy CS1-B/DS1-B sensors. For demanding thermal environments, Viton H seals raise the operating limit to 150 C, while the -B rod option provides a SUS304 stainless piston rod.
Airtac SI200 Standard Cylinder SI200BX210 Technical Specifications
| Model | Airtac SI200 Standard Cylinder SI200BX210 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI200BX210 |
| Bore size | Ø200 mm |
| Stroke | 210 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 SAI200BX210 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 SAI200BX210 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 SI200BX210
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 200 | Bore size in mm. |
| ×210 | 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 SI200BX210 Is Used
Heavy Press Clamping
Generates up to 21991 N at 0.7 MPa to secure large steel fabrications during heavy-duty machining and press operations.
Stamping Press Ejection
Delivers reliable high-force ejection of heavy industrial components from stamping dies using adjustable 50 mm cushions.
Replacing the Airtac SI200 Standard Cylinder SI200BX210 with the SAI200BX210
To replace the discontinued SI200BX210, order the SAI200BX210, confirming the ISO 15552 mounting interface, 200 mm bore, 210 mm stroke, G3/4 port, and mounting accessory. This non-magnetic SKU cannot support sensors; if sensing is required, select an SAI equivalent with the -S magnet for current AirTAC switches. Sizing both ways: if dropping to a 160 mm bore reduces force, stepping up is unnecessary as the 200 mm bore yields a theoretical max of 3204 kgf at 1.0 MPa. Note that a plain cylinder drifts on air loss—the cushion only decelerates—so for load holding consider an external rod lock, pilot check valve, or the SAIL/BSAI lock variants. For this 210 mm stroke, ensure adequate guide support to prevent rod bending under side loads.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI200BX210
- ✓ 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 SI200BX210 FAQ
Yes, the SI200BX210 is discontinued. The direct replacement is the SAI200BX210. It shares the same ISO 15552 mounting interface, 200 mm bore, 210 mm stroke, force, G3/4 port, and accessories, fitting directly into existing fixtures.
It features a G3/4 air port and M36x2 rod thread. 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 theoretical maximum of 3204 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI200BX210
Send us the quantity and destination. We confirm price, stock and lead time on the SAI200BX210 replacement — usually within 7-8 hours.