This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI63BX230, 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 SI63BX230
The AirTAC Airtac SI63 Standard Cylinder SI63BX230 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 SAI63BX230, 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 → SAI63BX230
- 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 SI63BX230
The AirTAC SI63BX230 is a discontinued double-acting ISO 15552 profile cylinder featuring a 63mm bore, 230mm stroke, and a SUS304 stainless steel rod. Delivering 1559 N push force at 0.5 MPa via a G3/8 port, it is directly replaced by the SAI63BX230. This direct upgrade shares identical ISO 15552 mounting dimensions, stroke, and output force, fitting existing fixtures perfectly.
The SAI successor introduces an upgraded piston seal with two Y-shaped one-way elements for low start-up pressure and extended life. Note that this SKU lacks a magnet and cannot accept a sensor.
Airtac SI63 Standard Cylinder SI63BX230 Technical Specifications
| Model | Airtac SI63 Standard Cylinder SI63BX230 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI63BX230 |
| 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 SAI63BX230 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 SAI63BX230 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 SI63BX230
| 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 SI63BX230 Is Used
Stainless Rod Diversion
Ideal for pushing packages on a washdown conveyor line where the SUS304 rod resists moisture and corrosion.
Mid-Force Clamping
Provides reliable 1559 N clamping force at 0.5 MPa for holding medium-sized machined components during milling.
Replacing the Airtac SI63 Standard Cylinder SI63BX230 with the SAI63BX230
To replace the SI63BX230, order the SAI63BX230. Confirm the ISO 15552 mounting interface (LB, FA, TC, etc.), the 230mm stroke, and the G3/8 port. Because this variant uses a -B SUS304 stainless rod, verify if your environment requires this corrosion-resistant material over the standard carbon steel. This non-magnetic SKU cannot support position sensing; if you need switches, select an SAI equivalent with a magnet. Sizing context: a 50mm bore yields 982 N push at 0.5 MPa, while an 80mm bore yields 2513 N. For load holding on air loss, note that a standard cylinder drifts; the cushion only decelerates. Use an external pilot check valve or explore the SAIL or BSAI locking variants. Since the 230mm stroke is under 300mm, rod bending is minimal, but always guide external loads to prevent side-loading.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI63BX230
- ✓ 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 SI63BX230 FAQ
Yes, the AirTAC SI63BX230 is discontinued. The direct replacement is the SAI63BX230. It features the same ISO 15552 mounting interface, 63mm bore, 230mm stroke, output force, and G3/8 port, dropping directly into existing machinery.
It features a G3/8 air port and an M16x1.5 rod thread. Force output is 1559 N push and 1402 N pull at 0.5 MPa, 2182 N push at 0.7 MPa, 2805 N push at 0.9 MPa, and a theoretical maximum of 318 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI63BX230
Send us the quantity and destination. We confirm price, stock and lead time on the SAI63BX230 replacement — usually within 7-8 hours.