This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI200BX155, 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 SI200BX155
The AirTAC Airtac SI200 Standard Cylinder SI200BX155 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø200mm bore and 155mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI200BX155, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ200 mm
- Stroke155 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2.0
- StatusDiscontinued → SAI200BX155
- 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 SI200BX155
The AirTAC SI200BX155 is a discontinued double-acting ISO 15552 profile cylinder. Generating 15708 N push force at 0.5 MPa, it features a 200 mm bore, 155 mm stroke, G3/4 port, and M36x2 rod thread. AirTAC replaced this legacy unit with the SAI200BX155 direct replacement, retaining the exact ISO 15552 mounting interface, output force, and dimensions.
The SAI upgrade introduces a two Y-shaped one-way piston seal for low start-up pressure and long life. This specific SKU lacks a magnet and cannot accept a sensor. For elevated temperatures, a Viton H seal option extends operation to 150 C.
Airtac SI200 Standard Cylinder SI200BX155 Technical Specifications
| Model | Airtac SI200 Standard Cylinder SI200BX155 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI200BX155 |
| Bore size | Ø200 mm |
| Stroke | 155 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 SAI200BX155 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 SAI200BX155 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 SI200BX155
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 200 | Bore size in mm. |
| ×155 | 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 SI200BX155 Is Used
Heavy Press Forming
Drives large metal stamping and forming presses requiring 15708 N push force at 0.5 MPa with stable 200 mm bore guidance.
Industrial Clamp Systems
Secures large fabricated components during welding or machining, utilizing the 28274 N push force available at 0.9 MPa.
Replacing the Airtac SI200 Standard Cylinder SI200BX155 with the SAI200BX155
To replace the discontinued SI200BX155, order the SAI200BX155. Verify the ISO 15552 mounting interface, 200 mm bore, 155 mm stroke, G3/4 port, and M36x2 thread. Because this SKU has no -S magnet, it cannot support legacy CS1-B/DS1-B switches. If sizing alternatives, a 160 mm bore yields 10053 N push at 0.5 MPa. Note that a plain cylinder drifts on air loss; the cushion only decelerates. For load holding, specify an external pilot check valve or the SAIL/BSAI lock variants. The -B rod option provides SUS304 stainless steel for corrosion resistance.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI200BX155
- ✓ 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 SI200BX155 FAQ
Yes, the SI200BX155 is discontinued. The direct replacement is the SAI200BX155. It shares the same ISO 15552 mounting interface, 200 mm bore, 155 mm stroke, force, and G3/4 port, fitting existing fixtures perfectly.
It features a G3/4 port. Force output is 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 SAI200BX155
Send us the quantity and destination. We confirm price, stock and lead time on the SAI200BX155 replacement — usually within 7-8 hours.