This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI63X800SFA, 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 SI63X800SFA
The AirTAC Airtac SI63 Standard Cylinder SI63X800SFA is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø63mm bore and 800mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI63X800SFA, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ63 mm
- Stroke800 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAI63X800SFA
- 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 SI63X800SFA
The AirTAC SI63X800SFA is a discontinued double-acting ISO 15552 profile cylinder with an 800 mm stroke, delivering 1559 N push force at 0.5 MPa through its G3/8 port. It is replaced by the SAI63X800SFA.
The SAI direct shares the exact ISO 15552 mounting interface, M16x1.5 rod thread and FA flange, but upgrades the piston seal to two Y-shaped one-way elements for lower start-up pressure. The -S magnet works with legacy CS1-B/DS1-B sensors.
Airtac SI63 Standard Cylinder SI63X800SFA Technical Specifications
| Model | Airtac SI63 Standard Cylinder SI63X800SFA |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI63X800SFA |
| Bore size | Ø63 mm |
| Stroke | 800 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 SAI63X800SFA 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 SAI63X800SFA 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 SI63X800SFA
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 63 | Bore size in mm. |
| ×800 | 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 SI63X800SFA Is Used
Long-Stroke Diversion
Pushes heavy pallets sideways across a 800mm transfer zone using the 1559 N thrust at 0.5 MPa.
Large Press Ejection
Kicks out molded parts from a deep press bed, relying on the 30mm adjustable cushions to stop smoothly.
Replacing the Airtac SI63 Standard Cylinder SI63X800SFA with the SAI63X800SFA
To replace the SI63X800SFA, order the SAI63X800SFA. Verify the ISO 15552 FA flange mount, 63mm bore, 800mm stroke, G3/8 port and the -S magnet. At 0.5 MPa it yields 1559 N push; sizing down, a 50mm bore gives 982 N, while an 80mm bore gives 2513 N. For this 800mm stroke, use an external guide to prevent rod bending and side-load wear. The air cushion only decelerates; it does not hold load. For drop-out prevention, use an external pilot check valve or the SAIL/BSAI lock variants.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI63X800SFA
- ✓ 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 SI63X800SFA FAQ
Yes, the SI63X800SFA is discontinued. The direct replacement is the SAI63X800SFA. It shares the identical ISO 15552 mounting interface, 63mm bore, 800mm stroke, G3/8 port and FA flange, fitting existing fixtures perfectly while upgrading the piston seal.
It features a G3/8 air port. The force output is 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.
Related AirTAC SAI Cylinders
Request a Quote for the SAI63X800SFA
Send us the quantity and destination. We confirm price, stock and lead time on the SAI63X800SFA replacement — usually within 7-8 hours.