This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI63BX100, 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 SI63BX100
The AirTAC Airtac SI63 Standard Cylinder SI63BX100 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø63mm bore and 100mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI63BX100, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ63 mm
- Stroke100 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAI63BX100
- 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 SI63BX100
The AirTAC SI63BX100 is a discontinued double-acting ISO 15552 profile cylinder with a 63 mm bore and 100 mm stroke. It delivers 1559 N push force at 0.5 MPa and features a SUS304 stainless steel rod for corrosion resistance. The direct replacement is the SAI63BX100, matching the exact bore, stroke, G3/8 port and ISO 15552 mounting interface.
The SAI upgrade introduces a two Y-shaped one-way piston seal for low start-up pressure and long life. Without a magnet (-S), this SKU cannot take a sensor. For load holding on air loss, use an external rod lock or pilot check valve, as cushions only decelerate.
Airtac SI63 Standard Cylinder SI63BX100 Technical Specifications
| Model | Airtac SI63 Standard Cylinder SI63BX100 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI63BX100 |
| Bore size | Ø63 mm |
| Stroke | 100 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 SAI63BX100 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 SAI63BX100 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 SI63BX100
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 63 | Bore size in mm. |
| ×100 | 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 SI63BX100 Is Used
Washdown Clamping
Uses the SUS304 stainless rod to resist moisture while providing 1559 N push force to secure parts during washing cycles.
Fixture Actuation
Fits existing ISO 15552 fixtures to move tooling plates, delivering 2182 N thrust at 0.7 MPa operating pressure.
Replacing the Airtac SI63 Standard Cylinder SI63BX100 with the SAI63BX100
To replace the SI63BX100, order the SAI63BX100. Confirm the ISO 15552 mounting interface, 63 mm bore, 100 mm stroke, G3/8 port and your specific mounting accessory. This SKU lacks a magnet, so it cannot accept CS1-B/DS1-B sensors; order an -S variant if position detection is needed. The SUS304 stainless rod suits corrosive environments. Sizing both ways: a 50 mm bore gives 982 N push at 0.5 MPa, while an 80 mm bore yields 2513 N. For held loads, note that cushions only decelerate; consider the SAIL or BSAI lock variants or an external pilot check valve.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI63BX100
- ✓ 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 SI63BX100 FAQ
Yes, the SI63BX100 is discontinued. The direct replacement is the SAI63BX100. It shares the same ISO 15552 mounting interface, 63 mm bore, 100 mm stroke, output force, G3/8 port and SUS304 stainless rod material, fitting existing fixtures perfectly.
It has a G3/8 air port. 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 max of 318 kgf at 1.0 MPa. The piston rod is 20 mm with an M16x1.5 thread.
Related AirTAC SAI Cylinders
Request a Quote for the SAI63BX100
Send us the quantity and destination. We confirm price, stock and lead time on the SAI63BX100 replacement — usually within 7-8 hours.