This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI200BX305S, 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 SI200BX305S
The AirTAC SI200 Standard Cylinder SI200BX305S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø200mm bore and 305mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI200BX305S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ200 mm
- Stroke305 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2.0
- StatusDiscontinued → SAI200BX305S
- 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 SI200BX305S
The AirTAC SI200BX305S is a discontinued double-acting ISO 15552 profile cylinder with a 200mm bore and 305mm stroke. Delivering 15708 N push force at 0.5 MPa, it is replaced by the SAI200BX305S. This direct successor shares the exact ISO 15552 mounting interface, G3/4 port, and M36x2 rod thread, fitting existing fixtures perfectly.
The SAI upgrade features a two Y-shaped one-way piston seal for low start-up pressure. This -B variant uses a SUS304 stainless rod, and the -S magnet pairs with legacy CS1-B/DS1-B sensors. For locked loads, explore the SAIL or BSAI variants, as cushions only decelerate.
Airtac SI200 Standard Cylinder SI200BX305S Technical Specifications
| Model | Airtac SI200 Standard Cylinder SI200BX305S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI200BX305S |
| Bore size | Ø200 mm |
| Stroke | 305 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 SAI200BX305S 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 SAI200BX305S 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 SI200BX305S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 200 | Bore size in mm. |
| ×305 | 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 SI200BX305S Is Used
Heavy Stamping Press
Drives large platens in metal forming, using the 21991 N push force at 0.7 MPa to stamp heavy gauge materials reliably.
Large Mold Clamping
Secures oversized injection molds, requiring the SUS304 stainless rod option to resist humid environmental corrosion.
Replacing the Airtac SI200 Standard Cylinder SI200BX305S with the SAI200BX305S
To replace the SI200BX305S, order the SAI200BX305S. Verify your ISO 15552 mounting interface, G3/4 port, and M36x2 thread. The -S magnet requires CS1-B/DS1-B switches (or current AirTAC switches for SAI), while the -B rod is SUS304 stainless. Sizing both ways: this 200mm bore yields 15708 N push at 0.5 MPa (3204 kgf max at 1.0 MPa); dropping to a 160mm bore gives 10053 N. For this 305mm stroke, use external guides to prevent rod bending and side loads. Cushions only decelerate; use an external rod lock or pilot check valve for load holding.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI200BX305S
- ✓ 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 SI200BX305S FAQ
Yes, the SI200BX305S is discontinued. The direct replacement is the SAI200BX305S. It shares the same ISO 15552 mounting interface, 200mm bore, 305mm stroke, force, and G3/4 port, fitting existing fixtures without modification.
It features a G3/4 port. 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. Speed is 30-500 mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAI200BX305S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI200BX305S replacement — usually within 7-8 hours.