This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI63BX80, 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 SI63BX80
The AirTAC Airtac SI63 Standard Cylinder SI63BX80 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø63mm bore and 80mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI63BX80, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ63 mm
- Stroke80 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAI63BX80
- 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 SI63BX80
The AirTAC SI63BX80 is a discontinued double-acting ISO 15552 profile cylinder featuring a 63 mm bore and 80 mm stroke. It delivers 1559 N push force at 0.5 MPa, uses a G3/8 port, and has a SUS304 stainless steel rod for corrosion resistance. Because this legacy model is end-of-life, you should order the direct replacement: SAI63BX80.
The SAI63BX80 shares the exact ISO 15552 mounting interface, bore, stroke, and port size, fitting existing fixtures perfectly. It upgrades the piston seal to two Y-shaped one-way elements for lower start-up pressure and longer life. Note this SKU lacks a magnet so it cannot take a sensor.
Airtac SI63 Standard Cylinder SI63BX80 Technical Specifications
| Model | Airtac SI63 Standard Cylinder SI63BX80 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI63BX80 |
| Bore size | Ø63 mm |
| Stroke | 80 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 SAI63BX80 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 SAI63BX80 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 SI63BX80
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 63 | Bore size in mm. |
| ×80 | 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 SI63BX80 Is Used
Stainless Rod Clamping
Ideal for packaging or washdown stations where the SUS304 rod resists moisture while providing 1559 N of clamping thrust at 0.5 MPa.
Transfer Line Diverter
Deploys an 80 mm stroke to push products between conveyor lanes, utilizing the adjustable 30 mm air cushions to stop the load smoothly.
Replacing the Airtac SI63 Standard Cylinder SI63BX80 with the SAI63BX80
To replace the SI63BX80, order the SAI63BX80. Verify your ISO 15552 mounting accessory (LB, FA, TC, etc.), the 80 mm stroke, and the G3/8 port. This unit has a -B SUS304 stainless rod; confirm if you need this corrosion-resistant option versus standard carbon steel. Because this SKU lacks a magnet (-S), it cannot accept a CS1-B or DS1-B sensor; if position sensing is required, switch to a magnet-equipped SAI63X80S. If you need less force, a 50 mm bore offers 982 N; for more, an 80 mm bore provides 2513 N. A plain cylinder does not hold load without live air—the cushion only decelerates. For load holding, use an external pilot check valve or explore the SAIL or BSAI lock variants.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI63BX80
- ✓ 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 SI63BX80 FAQ
Yes, the SI63BX80 is discontinued. The direct replacement is the SAI63BX80. It shares the same ISO 15552 mounting interface, 63 mm bore, 80 mm stroke, G3/8 port, and SUS304 rod, fitting your existing fixtures perfectly while upgrading the piston seal.
This double-acting cylinder uses a G3/8 air port. It generates 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. The rod is 20 mm with an M16x1.5 thread.
Request a Quote for the SAI63BX80
Send us the quantity and destination. We confirm price, stock and lead time on the SAI63BX80 replacement — usually within 7-8 hours.