This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI63X510, 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 SI63X510
The AirTAC Airtac SI63 Standard Cylinder SI63X510 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø63mm bore and 510mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI63X510, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ63 mm
- Stroke510 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAI63X510
- 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 SI63X510
The AirTAC SI63X510 is a discontinued double-acting ISO 15552 profile cylinder with a 63 mm bore and 510 mm stroke. Delivering 1559 N push force at 0.5 MPa via a G3/8 port, it is replaced by the SAI63X510. This direct successor matches the exact mounting interface, bore, stroke, force and port size.
The SAI upgrade features two Y-shaped one-way piston seals for low start-up pressure and long life. It also introduces SAIL, SAIF and BSAI variants absent from the SI line. Note this non-magnet SKU cannot accept a sensor.
Airtac SI63 Standard Cylinder SI63X510 Technical Specifications
| Model | Airtac SI63 Standard Cylinder SI63X510 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI63X510 |
| Bore size | Ø63 mm |
| Stroke | 510 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 SAI63X510 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 SAI63X510 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 SI63X510
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 63 | Bore size in mm. |
| ×510 | 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 SI63X510 Is Used
Carton Diverting
Drives diverter arms on packaging lines to route heavy cartons, utilizing the 1559 N push force to shift loads smoothly at 30-800 mm/s.
Press Ejection
Ejects formed metal parts from press beds, requiring the full 510 mm stroke to clear the tooling area before the next cycle.
Replacing the Airtac SI63 Standard Cylinder SI63X510 with the SAI63X510
To replace the SI63X510, order the SAI63X510. Verify the ISO 15552 mounting interface (LB, FA, CA, TC), the G3/8 port thread (PT/G/NPT) and the 510 mm stroke. This non-magnet version cannot hold a position sensor; if sensing is needed, select an SAI63X510S and use current AirTAC switches instead of legacy CS1-B/DS1-B units. The 510 mm stroke demands external guides to prevent rod bending under side loads. For sizing, the 50 mm bore yields 982 N push at 0.5 MPa, while the 80 mm bore yields 2513 N. A plain cylinder drifts on air loss; for load holding, use the SAIL lock, BSAI clamp-lock, or an external pilot check valve.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI63X510
- ✓ 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 SI63X510 FAQ
Yes, the SI63X510 is discontinued. The direct replacement is the SAI63X510. It shares the identical ISO 15552 mounting interface, 63 mm bore, 510 mm stroke, output force and G3/8 port, fitting directly into existing fixtures.
This double-acting cylinder uses a G3/8 port. It delivers 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 max of 318 kgf at 1.0 MPa.
Request a Quote for the SAI63X510
Send us the quantity and destination. We confirm price, stock and lead time on the SAI63X510 replacement — usually within 7-8 hours.