This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI200BX400, 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 SI200BX400
The AirTAC Airtac SI200 Standard Cylinder SI200BX400 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø200mm bore and 400mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI200BX400, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ200 mm
- Stroke400 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2.0
- StatusDiscontinued → SAI200BX400
- 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 SI200BX400
The AirTAC SI200BX400 is a discontinued double-acting ISO 15552 profile cylinder with a 200mm bore and 400mm stroke. Delivering 15708 N push force at 0.5 MPa, it is replaced by the SAI200BX400 direct. This upgrade shares the exact ISO 15552 mounting interface, G3/4 port, and M36x2 rod thread, fitting existing fixtures perfectly.
The SAI features an upgraded piston seal with two Y-shaped one-way elements for low start-up pressure and long life. This no-magnet SKU cannot take a sensor. The -B rod option uses SUS304 stainless steel for corrosion resistance.
Airtac SI200 Standard Cylinder SI200BX400 Technical Specifications
| Model | Airtac SI200 Standard Cylinder SI200BX400 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI200BX400 |
| Bore size | Ø200 mm |
| Stroke | 400 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 SAI200BX400 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 SAI200BX400 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 SI200BX400
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 200 | Bore size in mm. |
| ×400 | 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 SI200BX400 Is Used
Heavy Stamping Press
Drives large heavy-duty stamping dies requiring 15708 N of push force at 0.5 MPa with robust 400mm travel.
Industrial Mold Clamping
Secures large injection molds via the ISO 15552 interface, utilizing the 50mm adjustable air cushions to decelerate heavy masses.
Replacing the Airtac SI200 Standard Cylinder SI200BX400 with the SAI200BX400
To replace the discontinued SI200BX400, order the SAI200BX400. Verify your ISO 15552 mounting accessory, the G3/4 port, and the M36x2 rod thread. Because this SKU lacks the -S magnet, it cannot accept CS1-B/DS1-B sensors. Sizing both ways: if you need less force, the 160mm bore yields 10053 N [email protected]; if you need more, note this bore maxes at 3204 kgf. For load holding, a plain cylinder drifts on air loss—the cushion only decelerates—so use an external rod lock, pilot check valve, or the SAIL/BSAI lock variants. With a 400mm stroke, use external guides to prevent rod bending and side loads.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI200BX400
- ✓ 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 SI200BX400 FAQ
Yes, the AirTAC SI200BX400 is discontinued. The direct replacement is the SAI200BX400. It shares the exact ISO 15552 mounting interface, 200mm bore, 400mm stroke, output force, and G3/4 port, fitting existing fixtures perfectly.
It has a G3/4 air port. The force ratings are: 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 max of 3204 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI200BX400
Send us the quantity and destination. We confirm price, stock and lead time on the SAI200BX400 replacement — usually within 7-8 hours.