This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI63X480, 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 SI63X480
The AirTAC Airtac SI63 Standard Cylinder SI63X480 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø63mm bore and 480mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI63X480, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ63 mm
- Stroke480 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAI63X480
- 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 SI63X480
The AirTAC SI63X480 is a discontinued double-acting ISO 15552 profile cylinder with a 63 mm bore and 480 mm stroke, delivering 1559 N push force at 0.5 MPa through its G3/8 port. Because this legacy series ended production, the direct replacement is the SAI63X480, matching the interface, bore, stroke, force, and mounting fixtures.
The SAI upgrade features a refined piston seal using two Y-shaped one-way elements for lower start-up pressure and longer life. This SKU lacks a magnet, so it cannot accept a CS1-B/DS1-B sensor. For load holding, note the cushion only decelerates; use an external rod lock or the SAIL/BSAI lock variants.
Airtac SI63 Standard Cylinder SI63X480 Technical Specifications
| Model | Airtac SI63 Standard Cylinder SI63X480 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI63X480 |
| Bore size | Ø63 mm |
| Stroke | 480 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 SAI63X480 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 SAI63X480 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 SI63X480
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 63 | Bore size in mm. |
| ×480 | 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 SI63X480 Is Used
Material Diversion
Drives diverter gates on packaging lines, utilizing the 1559 N push force to reliably redirect heavy cartons at 0.5 MPa operating pressure.
Pallet Handling
Extends 480 mm to push pallets into staging zones, requiring external guide rails to manage side loads over the long stroke.
Replacing the Airtac SI63 Standard Cylinder SI63X480 with the SAI63X480
To replace the SI63X480, order the SAI63X480 keeping the identical ISO 15552 mounting interface, 63 mm bore, 480 mm stroke, G3/8 port, and M16x1.5 rod thread. Since this is a non-magnet SKU, it cannot support position sensing; if detection is needed, select an SAI63X480S and use current AirTAC switches. At 0.5 MPa, the 63 mm bore yields 1559 N push and 1402 N pull; if less force is acceptable, a 50 mm bore provides 982 N, while an 80 mm bore offers 2513 N. For the 480 mm stroke, use external guides to prevent rod bending and side-load damage. A plain cylinder drifts on air loss, so for held loads choose the SAIL or BSAI lock variant, or add a pilot check valve.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI63X480
- ✓ 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 SI63X480 FAQ
Yes, the SI63X480 is discontinued. The direct replacement is the AirTAC SAI63X480. It is dimensionally interchangeable per ISO 15552, matching the 63 mm bore, 480 mm stroke, G3/8 port, and mounting interface, so it drops directly into existing fixtures.
The 63 mm bore uses a G3/8 air port and features a 20 mm rod with an M16x1.5 thread. 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 maximum theoretical force of 318 kgf at 1.0 MPa.
Request a Quote for the SAI63X480
Send us the quantity and destination. We confirm price, stock and lead time on the SAI63X480 replacement — usually within 7-8 hours.