This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI200BX65S, 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 SI200BX65S
The AirTAC Airtac SI200 Standard Cylinder SI200BX65S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø200mm bore and 65mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI200BX65S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ200 mm
- Stroke65 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2.0
- StatusDiscontinued → SAI200BX65S
- 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 SI200BX65S
The AirTAC SI200BX65S is a discontinued double-acting ISO 15552 profile cylinder with a 200mm bore and 65mm stroke. Delivering 15708 N push force at 0.5 MPa through a G3/4 port, it is replaced by the SAI200BX65S. This direct upgrade shares the exact ISO 15552 mounting interface, bore, stroke, force and port. The SAI uses an upgraded piston seal (two Y-shaped one-way elements) for low start-up pressure and long life.
This -S SKU includes a piston magnet for CS1-B/DS1-B legacy switches, while the SAI replacement uses current AirTAC switches. The -B rod is SUS304 stainless steel for corrosion resistance, and a Viton H seal option raises the temperature range to 0-150 C. The SAI family also adds SAIL, SAIF and BSAI lock variants the SI lacked.
Airtac SI200 Standard Cylinder SI200BX65S Technical Specifications
| Model | Airtac SI200 Standard Cylinder SI200BX65S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI200BX65S |
| Bore size | Ø200 mm |
| Stroke | 65 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 SAI200BX65S 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 SAI200BX65S 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 SI200BX65S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 200 | Bore size in mm. |
| ×65 | 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 SI200BX65S Is Used
Heavy Stamping
Drives large press dies and heavy metal forming tools requiring 15708 N of thrust at 0.5 MPa.
Mold Clamping
Secures oversized injection molds with a 65mm stroke, using the SUS304 rod in humid environments.
Replacing the Airtac SI200 Standard Cylinder SI200BX65S with the SAI200BX65S
To replace the SI200BX65S, order the SAI200BX65S. Confirm the ISO 15552 mounting interface, 200mm bore, 65mm stroke, G3/4 port (PT/G/NPT threads), and mounting accessory. The -S magnet and -B SUS304 stainless rod must be specified on the new order. Sizing both ways: a 160mm bore yields 10053 N push at 0.5 MPa, whereas this 200mm bore provides 15708 N. If you need to hold the load without live air, note that the air cushion only decelerates; use an external rod lock, pilot check valve, or the SAIL/BSAI lock variant. For any stroke >= 300 mm, add external guides to prevent rod bending under side loads.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI200BX65S
- ✓ 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 SI200BX65S FAQ
Yes, the SI200BX65S is discontinued. The direct replacement is the SAI200BX65S. It is dimensionally interchangeable per ISO 15552, retaining the same 200mm bore, 65mm stroke, 15708 N force, G3/4 port and mounting interface.
The 200mm bore cylinder has a 40mm rod, M36x2 thread, 50mm cushion, and 30-500 mm/s speed. Forces 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 3204 kgf theoretical max at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI200BX65S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI200BX65S replacement — usually within 7-8 hours.