This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI63X500N, 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 SI63X500N
The AirTAC Airtac SI63 Standard Cylinder SI63X500N is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø63mm bore and 500mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI63X500N, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ63 mm
- Stroke500 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAI63X500N
- 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 SI63X500N
The AirTAC SI63X500N is a discontinued double-acting ISO 15552 profile cylinder with a 63 mm bore and 500 mm stroke. It delivers 1559 N push and 1402 N pull at 0.5 MPa through a G3/8 port. The direct replacement is the SAI63X500N, matching the interface, force, and mounting. This NBR-sealed unit operates from -20 to +70 C; a Viton H option extends this to 150 C.
Because this SKU lacks the -S magnet, it cannot accept a position sensor. The SAI upgrade features two Y-shaped one-way piston seals for low start-up pressure and long life. For load holding, note that standard cylinders drift on air loss—the cushion only decelerates. Use an external rod lock, pilot check valve, or the SAIL/BSAI lock variants.
Airtac SI63 Standard Cylinder SI63X500N Technical Specifications
| Model | Airtac SI63 Standard Cylinder SI63X500N |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI63X500N |
| Bore size | Ø63 mm |
| Stroke | 500 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 SAI63X500N 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 SAI63X500N 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 SI63X500N
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 63 | Bore size in mm. |
| ×500 | 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 SI63X500N Is Used
Press Ejection
Ejects formed parts using 2182 N at 0.7 MPa, with adjustable 30 mm cushions absorbing end-of-stroke impact.
Replacing the Airtac SI63 Standard Cylinder SI63X500N with the SAI63X500N
To replace the SI63X500N, order the SAI63X500N. Verify the ISO 15552 mounting interface, 63 mm bore, 500 mm stroke, G3/8 port, and NBR seals. Since this is a non-magnet SKU, it cannot use CS1-B/DS1-B sensors; add the -S suffix if sensing is needed. At 0.5 MPa it pushes 1559 N; sizing down, a 50 mm bore yields 982 N, while an 80 mm bore yields 2513 N. For the 500 mm stroke, use external guides to prevent rod bending and side-load wear. A plain cylinder does not hold load without air; for drop prevention, use a pilot check valve or the SAIL/BSAI lock variant.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI63X500N
- ✓ 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 SI63X500N FAQ
Yes, the SI63X500N is discontinued. The direct replacement is the SAI63X500N. It shares the same ISO 15552 mounting interface, 63 mm bore, 500 mm stroke, output force, and G3/8 port, fitting existing fixtures perfectly.
The 63 mm bore features a G3/8 port and M16x1.5 rod thread. It pushes 1559 N and pulls 1402 N at 0.5 MPa, pushes 2182 N at 0.7 MPa, 2805 N at 0.9 MPa, with a theoretical max of 318 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI63X500N
Send us the quantity and destination. We confirm price, stock and lead time on the SAI63X500N replacement — usually within 7-8 hours.