This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI63BX290, 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 SI63BX290
The AirTAC Airtac SI63 Standard Cylinder SI63BX290 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø63mm bore and 290mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI63BX290, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ63 mm
- Stroke290 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAI63BX290
- 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 SI63BX290
The AirTAC SI63BX290 is a discontinued double-acting ISO 15552 profile cylinder featuring a 63mm bore, 290mm stroke, and a SUS304 stainless steel piston rod. Delivering 1559N push force at 0.5MPa, it is directly replaced by the SAI63BX290. This direct upgrade matches the G3/8 port, M16x1.5 thread, and ISO 15552 mounting interface, fitting existing fixtures perfectly.
The SAI replacement introduces an upgraded piston seal with two Y-shaped one-way elements for low start-up pressure and long life. Note this SKU lacks a magnet and cannot accept sensors. The SAI family also adds SAIL, SAIF, and BSAI lock variants absent from the SI line.
Airtac SI63 Standard Cylinder SI63BX290 Technical Specifications
| Model | Airtac SI63 Standard Cylinder SI63BX290 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI63BX290 |
| Bore size | Ø63 mm |
| Stroke | 290 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 SAI63BX290 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 SAI63BX290 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 SI63BX290
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 63 | Bore size in mm. |
| ×290 | 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 SI63BX290 Is Used
Stainless Rod Actuation
Leverages the SUS304 piston rod for corrosive-resistance in washdown clamping tasks pushing 1559N at 0.5MPa.
Mid-Stroke Diverting
Uses the 290mm stroke to push products between parallel lanes without requiring full 300mm retraction.
Replacing the Airtac SI63 Standard Cylinder SI63BX290 with the SAI63BX290
To replace the SI63BX290, order the SAI63BX290 to retain the exact 63mm bore, 290mm stroke, SUS304 rod, G3/8 port, and ISO 15552 mounting interface. Because this SKU has no magnet (-S), it cannot support legacy CS1-B/DS1-B sensors; order a magnet-equipped SAI if position detection is needed. Sizing both ways: a 50mm bore yields 982N push at 0.5MPa, while an 80mm bore provides 2513N. A plain cylinder does not hold load on air loss—the cushion only decelerates—so use an external rod lock or pilot check valve for holding, or specify an SAIL/BSAI lock variant. For the 290mm stroke, use guide rails to prevent rod bending and side-load wear.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI63BX290
- ✓ 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 SI63BX290 FAQ
Yes, the SI63BX290 is discontinued. The direct replacement is the SAI63BX290. It shares the identical ISO 15552 mounting interface, 63mm bore, 290mm stroke, G3/8 port, and force output, fitting existing fixtures seamlessly.
This 63mm bore cylinder features a G3/8 air port and M16x1.5 rod thread. Force output is 1559N push and 1402N pull at 0.5MPa, 2182N push at 0.7MPa, 2805N at 0.9MPa, with a theoretical max of 318kgf at 1.0MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI63BX290
Send us the quantity and destination. We confirm price, stock and lead time on the SAI63BX290 replacement — usually within 7-8 hours.