This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI200BX165S, 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 SI200BX165S
The AirTAC SI200 Standard Cylinder SI200BX165S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø200mm bore and 165mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI200BX165S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ200 mm
- Stroke165 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2.0
- StatusDiscontinued → SAI200BX165S
- 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 SI200BX165S
The AirTAC SI200BX165S is a discontinued double-acting ISO 15552 profile cylinder with a 200mm bore and 165mm stroke. Delivering 15708N push and 15080N pull at 0.5MPa, it features a SUS304 stainless rod, a G3/4 port, and a piston magnet for CS1-B/DS1-B sensors. AirTAC replaced this legacy unit with the SAI200BX165S, a direct sharing the exact ISO 15552 mounting interface, bore, stroke, force, and port.
The SAI upgrade introduces a two Y-shaped one-way piston seal for low start-up pressure and long life. For load holding, note that a standard cylinder drifts without live air—the cushion only decelerates—so use an external rod lock or the SAIL/BSAI lock variants.
Airtac SI200 Standard Cylinder SI200BX165S Technical Specifications
| Model | Airtac SI200 Standard Cylinder SI200BX165S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI200BX165S |
| Bore size | Ø200 mm |
| Stroke | 165 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 SAI200BX165S 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 SAI200BX165S 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 SI200BX165S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 200 | Bore size in mm. |
| ×165 | 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 SI200BX165S Is Used
Heavy Stamping Press
Drives large tonnage metal forming and stamping dies requiring 15708N push force at 0.5MPa with stable 200mm bore guidance.
Automotive Assembly Jig
Actuates heavy structural clamps and robotic welding fixtures where the SUS304 stainless rod resists weld spatter and plant moisture.
Replacing the Airtac SI200 Standard Cylinder SI200BX165S with the SAI200BX165S
To replace the SI200BX165S, order the SAI200BX165S and confirm the ISO 15552 mounting interface, 165mm stroke, G3/4 port, and the -S magnet for current AirTAC switches. Sizing both ways: this 200mm bore yields 15708N push at 0.5MPa, whereas a neighbouring 160mm bore offers 10053N. For load holding, remember the cushion only decelerates; it does not lock, so add a pilot check valve or explore the SAIL/BSAI lock variants. The SUS304 rod handles corrosion, and the Viton H seal extends heat to 150C.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI200BX165S
- ✓ 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 SI200BX165S FAQ
Yes, the SI200BX165S is discontinued. The direct replacement is the AirTAC SAI200BX165S. It shares the identical ISO 15552 mounting interface, 200mm bore, 165mm stroke, output force, G3/4 port, and accessories, fitting existing fixtures perfectly.
At 0.5MPa it pushes 15708N and pulls 15080N. Push is 21991N at 0.7MPa and 28274N at 0.9MPa, with a theoretical max of 3204kgf at 1.0MPa. Operating speed is 30-500mm/s, it has a 50mm cushion, and uses a G3/4 port.
Related AirTAC SAI Cylinders
Request a Quote for the SAI200BX165S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI200BX165S replacement — usually within 7-8 hours.