This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI200BX240, 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 SI200BX240
The AirTAC Airtac SI200 Standard Cylinder SI200BX240 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø200mm bore and 240mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI200BX240, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ200 mm
- Stroke240 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2.0
- StatusDiscontinued → SAI200BX240
- 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 SI200BX240
The AirTAC SI200BX240 is a discontinued double-acting ISO 15552 profile cylinder with a 200 mm bore and 240 mm stroke. It delivers 15708 N of push force at 0.5 MPa via a G3/4 port. AirTAC replaced this legacy unit with the SAI200BX240, a direct replacement retaining the exact ISO 15552 mounting interface, bore, stroke, output force, port size and accessories. The SAI upgrade features a new piston seal using two Y-shaped one-way elements for low start-up pressure and extended life.
Because this SKU lacks the -S magnet suffix, it cannot accept a sensor like the legacy CS1-B or DS1-B switches. The SAI family also introduces lock variants (SAIL, BSAI) and the built-in 4M valve (SAIF) that the original SI line lacked.
Airtac SI200 Standard Cylinder SI200BX240 Technical Specifications
| Model | Airtac SI200 Standard Cylinder SI200BX240 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI200BX240 |
| Bore size | Ø200 mm |
| Stroke | 240 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 SAI200BX240 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 SAI200BX240 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 SI200BX240
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 200 | Bore size in mm. |
| ×240 | 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 SI200BX240 Is Used
Heavy Stamp Pressing
Drives large metal forming and stamping dies requiring up to 21991 N of thrust at 0.7 MPa to shape thick plate materials.
Industrial Clamp Press
Generates massive 15708 N clamping force at 0.5 MPa to secure heavy fabrications or composite panels during machining and curing.
Replacing the Airtac SI200 Standard Cylinder SI200BX240 with the SAI200BX240
To replace the discontinued SI200BX240, order the SAI200BX240. Confirm the ISO 15552 mounting interface, the 200 mm bore, the 240 mm stroke, the G3/4 port, and your specific mounting accessory (LB, FA, TC, etc.). Since this SKU has no -S magnet, it cannot support magnetic sensing; if position detection is required, select an SAI equivalent with the magnet option. When sizing, note that stepping down to a 160 mm bore yields 10053 N push at 0.5 MPa, while the 200 mm bore provides 15708 N. A plain cylinder does not hold load on air loss—the cushion only decelerates—so for suspended loads use an external rod lock, a pilot check valve, or the SAIL/BSAI lock variants. At 240 mm stroke, side-load and rod-bending risks are moderate, but ensure adequate guide support.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI200BX240
- ✓ 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 SI200BX240 FAQ
Yes, the SI200BX240 is discontinued. The direct replacement is the AirTAC SAI200BX240. It features the same ISO 15552 mounting interface, 200 mm bore, 240 mm stroke, output force, and G3/4 port, fitting directly into existing fixtures.
The G3/4 port feeds a 40 mm rod. 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, with a theoretical max of 3204 kgf at 1.0 MPa. Operating speed is 30-500 mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAI200BX240
Send us the quantity and destination. We confirm price, stock and lead time on the SAI200BX240 replacement — usually within 7-8 hours.