This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI200BX120, 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 SI200BX120
The AirTAC SI200 Standard Cylinder SI200BX120 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø200mm bore and 120mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI200BX120, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ200 mm
- Stroke120 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2.0
- StatusDiscontinued → SAI200BX120
- 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 SI200BX120
The AirTAC SI200BX120 is a discontinued double-acting ISO 15552 profile cylinder with a 200mm bore and 120mm stroke, delivering 15708 N push force at 0.5 MPa. It uses a G3/4 air port and a 50mm adjustable air cushion at each end. The direct replacement is the SAI200BX120, matching the exact bore, stroke, output force, port and ISO 15552 mounting interface.
This SKU has no magnet (-S) and cannot take a sensor, unlike legacy CS1-B/DS1-B switches. The SAI upgrade features two Y-shaped one-way piston seals for low start-up pressure. The -B rod option specifies SUS304 stainless steel.
Airtac SI200 Standard Cylinder SI200BX120 Technical Specifications
| Model | Airtac SI200 Standard Cylinder SI200BX120 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI200BX120 |
| Bore size | Ø200 mm |
| Stroke | 120 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 SAI200BX120 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 SAI200BX120 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 SI200BX120
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 200 | Bore size in mm. |
| ×120 | 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 SI200BX120 Is Used
Heavy Press Forming
Generates 15708 N at 0.5 MPa for stamping and forming heavy-gauge metal components in automated fabrication lines.
Industrial Clamp Rigs
Secures large fabricated steel structures during welding or machining using the massive 3204 kgf maximum theoretical holding force.
Replacing the Airtac SI200 Standard Cylinder SI200BX120 with the SAI200BX120
To replace the SI200BX120, order the SAI200BX120. Confirm the ISO 15552 mounting interface, 200mm bore, 120mm stroke, G3/4 port (PT/G/NPT thread), and mounting accessory. Because this SKU lacks the -S magnet, it cannot accept position sensors. If you need load holding on air loss, note that a plain cylinder drifts; the cushion only decelerates. Use an external rod lock, pilot check valve, or the SAIL/BSAI lock variant. For sizing, a 160mm bore yields 10053 N push at 0.5 MPa, while stepping up to 0.7 MPa provides 21991 N here. At 120mm stroke, side-load risk is low, but ensure guide alignment to prevent rod bending.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI200BX120
- ✓ 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 SI200BX120 FAQ
Yes, the SI200BX120 is discontinued. The direct replacement is the SAI200BX120. It is dimensionally interchangeable per ISO 15552, retaining the same 200mm bore, 120mm stroke, G3/4 port, and mounting interface.
The 200mm bore features a G3/4 air port. It delivers 15708 N push and 15080 N pull at 0.5 MPa, 21991 N push at 0.7 MPa, and 28274 N push at 0.9 MPa. The theoretical maximum force is 3204 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI200BX120
Send us the quantity and destination. We confirm price, stock and lead time on the SAI200BX120 replacement — usually within 7-8 hours.