This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI63X460S, 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 SI63X460S
The AirTAC Airtac SI63 Standard Cylinder SI63X460S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø63mm bore and 460mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI63X460S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ63 mm
- Stroke460 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAI63X460S
- 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 SI63X460S
The AirTAC SI63X460S is a discontinued double-acting ISO 15552 profile cylinder with a 63 mm bore and 460 mm stroke. It delivers 1559 N push force at 0.5 MPa via a G3/8 port. AirTAC replaced this legacy unit with the SAI63X460S, a direct upgrade retaining the exact ISO 15552 mounting interface, bore, stroke, output force, and porting.
The SAI upgrade features a refined piston seal with two Y-shaped one-way elements for low start-up pressure and extended life. The SAI family also introduces SAIL, SAIF, and BSAI lock variants absent in the original SI line.
Airtac SI63 Standard Cylinder SI63X460S Technical Specifications
| Model | Airtac SI63 Standard Cylinder SI63X460S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI63X460S |
| Bore size | Ø63 mm |
| Stroke | 460 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 SAI63X460S 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 SAI63X460S 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 SI63X460S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 63 | Bore size in mm. |
| ×460 | 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 SI63X460S Is Used
Material Diverting
Actuates diverting gates on packaging lines, utilizing the 1559 N push force to reliably redirect heavy totes at high cycling speeds.
Pallet Handling
Drives lifting mechanisms in end-of-line palletizers, where the 460 mm stroke accommodates varied pallet heights and rigid external guides.
Replacing the Airtac SI63 Standard Cylinder SI63X460S with the SAI63X460S
To replace the SI63X460S, order the SAI63X460S and verify your ISO 15552 mounting accessory (LB, FA, CA, TC, etc.), G3/8 port threads, and the -S magnet for CS1-B/DS1-B legacy sensors (the SAI uses current AirTAC switches). If sizing up or down, neighboring bores are 50 mm (982 N push @0.5 MPa) and 80 mm (2513 N push @0.5 MPa). Because this is a 460 mm stroke, use an external guide to prevent rod bending and side-load damage. A plain cylinder will not hold a load on air loss—the cushion only decelerates—so use an external rod lock, pilot check valve, or the SAIL/BSAI lock variant for secure holding.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI63X460S
- ✓ 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 SI63X460S FAQ
Yes, the SI63X460S is discontinued. The direct replacement is the SAI63X460S. It is dimensionally interchangeable per ISO 15552, matching the 63 mm bore, 460 mm stroke, G3/8 port, and mounting interface exactly.
The bore is 63 mm with a G3/8 air port. At 0.5 MPa it provides 1559 N push and 1402 N pull force. At 0.7 MPa push is 2182 N, and at 0.9 MPa it is 2805 N. The theoretical maximum force is 318 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI63X460S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI63X460S replacement — usually within 7-8 hours.