This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI63BX10S, 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 SI63BX10S
The AirTAC Airtac SI63 Standard Cylinder SI63BX10S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø63mm bore and 10mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI63BX10S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ63 mm
- Stroke10 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAI63BX10S
- 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 SI63BX10S
The AirTAC SI63BX10S is a discontinued double-acting ISO 15552 profile cylinder featuring a SUS304 stainless steel rod and a 10 mm stroke. It delivers 1559 N push force at 0.5 MPa through a G3/8 port. AirTAC replaced this legacy unit with the SAI63BX10S, a direct replacement retaining the exact ISO 15552 mounting interface, bore, stroke, and porting.
The SAI upgrade introduces a two Y-shaped one-way piston seal for low start-up pressure and extended life. The built-in magnet supports legacy CS1-B/DS1-B sensors, while a Viton H seal option raises operating temperatures to 150 C.
Airtac SI63 Standard Cylinder SI63BX10S Technical Specifications
| Model | Airtac SI63 Standard Cylinder SI63BX10S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI63BX10S |
| Bore size | Ø63 mm |
| Stroke | 10 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 SAI63BX10S 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 SAI63BX10S 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 SI63BX10S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 63 | Bore size in mm. |
| ×10 | 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 SI63BX10S Is Used
Short-Stroke Clamping
Ideal for holding parts during machining with a compact 10 mm stroke and a robust 1559 N clamping force at 0.5 MPa.
Stainless Rod Ejector
The SUS304 rod option provides corrosion resistance for ejecting parts in washdown or mildly chemical manufacturing environments.
Pneumatic Diverter
Delivers rapid 30-800 mm/s actuation to flip or divert light product flows on packaging lines without occupying much length.
Replacing the Airtac SI63 Standard Cylinder SI63BX10S with the SAI63BX10S
To replace the SI63BX10S, order the SAI63BX10S and verify your ISO 15552 mounting interface, G3/8 port thread (PT/G/NPT), and the SUS304 stainless rod requirement. The -S magnet allows CS1-B/DS1-B switches; the SAI family uses current AirTAC switches. For higher force, the neighbouring 80 mm bore yields 2513 N push at 0.5 MPa; for lower force, the 50 mm bore yields 982 N. Note that a plain cylinder drifts on air loss—the cushion only decelerates. For load holding, specify the SAIL lock or BSAI clamp-lock variant, or use an external pilot check valve.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI63BX10S
- ✓ 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 SI63BX10S FAQ
Yes, the SI63BX10S is discontinued. The direct replacement is the AirTAC SAI63BX10S. It shares the identical ISO 15552 mounting interface, bore, stroke, port size, and force, fitting existing fixtures perfectly.
The bore is 63 mm with a G3/8 air port. At 0.5 MPa it provides 1559 N push and 1402 N pull. At 0.7 MPa push is 2182 N, and 2805 N at 0.9 MPa. The theoretical maximum force is 318 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI63BX10S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI63BX10S replacement — usually within 7-8 hours.