This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI200BX180, 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 SI200BX180
The AirTAC Airtac SI200 Standard Cylinder SI200BX180 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø200mm bore and 180mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI200BX180, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ200 mm
- Stroke180 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2.0
- StatusDiscontinued → SAI200BX180
- 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 SI200BX180
The AirTAC SI200BX180 is a discontinued double-acting ISO 15552 profile cylinder with a 200 mm bore and 180 mm stroke. It delivers 15708 N push and 15080 N pull at 0.5 MPa, utilizing a G3/4 port and a 40 mm carbon steel rod. AirTAC replaced this legacy unit with the SAI200BX180, a direct upgrade retaining the exact ISO 15552 mounting interface, force, and dimensions.
The SAI replacement features an upgraded piston seal with two Y-shaped one-way elements for low start-up pressure and extended life. Note this specific SKU lacks a magnet (-S) and cannot accept position sensors. For high heat, Viton H seals raise the temperature limit to 150 C.
Airtac SI200 Standard Cylinder SI200BX180 Technical Specifications
| Model | Airtac SI200 Standard Cylinder SI200BX180 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI200BX180 |
| Bore size | Ø200 mm |
| Stroke | 180 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 SAI200BX180 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 SAI200BX180 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 SI200BX180
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 200 | Bore size in mm. |
| ×180 | 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 SI200BX180 Is Used
Heavy Stamping Press
Drives large heavy-duty stamping dies requiring 21991 N output at 0.7 MPa, using the 50 mm adjustable cushions to absorb high kinetic energy.
Large Mold Clamping
Secures oversized injection molds on the production floor, taking advantage of the 3204 kgf maximum theoretical force at 1.0 MPa.
Replacing the Airtac SI200 Standard Cylinder SI200BX180 with the SAI200BX180
To replace the SI200BX180, order the SAI200BX180. Verify your ISO 15552 mounting accessory (LB, FA, TC, etc.), the G3/4 port thread (PT, G, or NPT), and the M36x2 rod thread. Because this SKU lacks a magnet, it cannot support legacy CS1-B/DS1-B sensors; if sensing is required, switch to an SAI200BX180S. Sizing both ways: the 200 mm bore yields 15708 N at 0.5 MPa (safe load 9425 N), while a smaller 160 mm bore provides 10053 N. For loads requiring 21991 N, 0.7 MPa is needed. A plain cylinder drifts on air loss; the 50 mm cushions only decelerate. For load holding, use an external pilot check valve or the SAIL/BSAI lock variants.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI200BX180
- ✓ 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 SI200BX180 FAQ
Yes, the SI200BX180 is discontinued. The direct replacement is the SAI200BX180. It shares the same ISO 15552 mounting interface, 200 mm bore, 180 mm stroke, G3/4 port, and output force, fitting existing fixtures perfectly.
The 200 mm bore generates 15708 N push and 15080 N pull at 0.5 MPa, 21991 N push at 0.7 MPa, and 28274 N at 0.9 MPa. The theoretical max is 3204 kgf at 1.0 MPa. Operating speed is 30-500 mm/s, and it uses a G3/4 port.
Related AirTAC SAI Cylinders
Request a Quote for the SAI200BX180
Send us the quantity and destination. We confirm price, stock and lead time on the SAI200BX180 replacement — usually within 7-8 hours.