This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI63BX230S, 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 SI63 Standard Cylinder SI63BX230S
The AirTAC Airtac SI63 Standard Cylinder SI63BX230S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø63mm bore and 230mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI63BX230S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ63 mm
- Stroke230 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAI63BX230S
- 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 SI63 Standard Cylinder SI63BX230S
The AirTAC SI63BX230S is a discontinued double-acting ISO 15552 profile cylinder featuring a 63 mm bore, 230 mm stroke, and a SUS304 stainless steel rod. Delivering 1559 N push force at 0.5 MPa, it is directly replaced by the SAI63BX230S. This direct upgrade shares the exact ISO 15552 mounting interface, G3/8 port, and M16x1.5 rod thread, fitting existing fixtures perfectly.
The SAI replacement features an upgraded piston seal with two Y-shaped one-way elements for low start-up pressure and extended life. The original -S magnet supports legacy CS1-B/DS1-B sensors, while the SAI family introduces SAIL, SAIF, and BSAI lock and valve variants previously unavailable.
Airtac SI63 Standard Cylinder SI63BX230S Technical Specifications
| Model | Airtac SI63 Standard Cylinder SI63BX230S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI63BX230S |
| Bore size | Ø63 mm |
| Stroke | 230 mm |
| Acting type | Double acting |
| Port size | G3/8 |
| Rod thread | M16×1.5 |
| 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 – 800 mm/s |
| Cushion | Adjustable, 30 mm |
| Max standard stroke | Up to 1500 mm |
Specifications follow the official AirTAC SI datasheet (now discontinued). The SAI63BX230S carries the same ISO 15552 ratings. Confirm against the product label before installation. Thread options: PT / G / NPT.
Theoretical Output Force (Ø63mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 1559 N | 1402 N |
| 0.7 MPa | 2182 N | — |
| Max (@1.0 MPa) | 318 kgf | |
The SAI63BX230S produces the same force from the same bore. Actual usable force is lower than theoretical; size with a margin.
Model Code: Airtac SI63 Standard Cylinder SI63BX230S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 63 | Bore size in mm. |
| ×230 | 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 SI63 Standard Cylinder SI63BX230S Is Used
Stainless Rod Diverters
Ideal for food-grade or wash-down conveyor diverting arms where the SUS304 rod resists corrosion and the 1559 N force easily pushes packaged goods.
Mid-Tonnage Pressing
Provides reliable 0.5 MPa clamping force for light-duty assembly presses, utilizing the 230 mm stroke to clear parts before actuation.
Replacing the Airtac SI63 Standard Cylinder SI63BX230S with the SAI63BX230S
To replace the SI63BX230S, order the SAI63BX230S. Verify the ISO 15552 mounting interface, 63 mm bore, 230 mm stroke, G3/8 port, and your specific mounting accessory (LB, FA, TC, etc.). The -B rod is SUS304 stainless steel, and the -S magnet allows for current AirTAC switches on the SAI. For sizing, the 63 mm bore yields 1559 N push at 0.5 MPa; if less force is needed, a 50 mm bore provides 982 N, while an 80 mm bore offers 2513 N. Note that a plain cylinder drifts on air loss—the cushion only decelerates—so for load holding, specify an external pilot check valve or the SAIL/BSAI lock variant. At 230 mm stroke, guide the load to prevent rod bending and side-load wear.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI63BX230S
- ✓ Same bore / stroke / force
- ✓ Port/thread type (PT/G/NPT)
- ✓ Magnet (-S) for sensors?
- ✓ Mounting reused (FA/FB/CA/CB/CR/LB/TC)
Airtac SI63 Standard Cylinder SI63BX230S FAQ
Yes, the SI63BX230S is discontinued. The direct replacement is the AirTAC SAI63BX230S. It is dimensionally interchangeable per the ISO 15552 mounting interface, retaining the same 63 mm bore, 230 mm stroke, G3/8 port, and output force to fit existing fixtures.
The 63 mm bore uses a G3/8 air port. At 0.5 MPa it provides 1559 N push and 1402 N pull force. At 0.7 MPa push is 2182 N, and at 0.9 MPa it is 2805 N. The theoretical maximum force is 318 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI63BX230S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI63BX230S replacement — usually within 7-8 hours.