This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI63X80N, 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 SI63X80N
The AirTAC Airtac SI63 Standard Cylinder SI63X80N is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø63mm bore and 80mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI63X80N, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ63 mm
- Stroke80 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAI63X80N
- 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 SI63X80N
The AirTAC SI63X80N is a discontinued double-acting ISO 15552 profile cylinder with an 80 mm stroke and 63 mm bore. It delivers a push force of 1559 N at 0.5 MPa via a G3/8 port. The direct successor is the SAI63X80N, which preserves the original ISO 15552 mounting interface, bore, stroke, force, and port size for seamless fixture integration.
The SAI upgrade features a refined piston seal with two Y-shaped one-way elements for low start-up pressure and extended life. Because this specific SKU lacks the -S magnet, it cannot accept a position switch. For load holding, note that standard cylinders drift on air loss—the cushion only decelerates—so use an external rod lock or pilot check valve.
Airtac SI63 Standard Cylinder SI63X80N Technical Specifications
| Model | Airtac SI63 Standard Cylinder SI63X80N |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI63X80N |
| Bore size | Ø63 mm |
| Stroke | 80 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 SAI63X80N 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 SAI63X80N 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 SI63X80N
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 63 | Bore size in mm. |
| ×80 | 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 SI63X80N Is Used
Mid-Tonnage Clamping
Ideal for holding medium-weight workpieces during machining, utilizing the 1559 N push force at 0.5 MPa to secure parts firmly against fixture stops.
Package Diversion
Drives 80 mm stroke diverting arms on packaging lines to route boxes, relying on the 30-800 mm/s speed range for rapid, repetitive actuation.
Replacing the Airtac SI63 Standard Cylinder SI63X80N with the SAI63X80N
To replace the legacy SI63X80N, order the SAI63X80N. Verify your existing fixture matches the ISO 15552 mounting dimensions (LB, FA, CA, TC, etc.) and the G3/8 air port. This NBR-sealed unit operates from -20 to +70 C; select the Viton H option for up to 150 C. Because this SKU has no -S magnet, it cannot support sensing—upgrade to a magnet-equipped SAI if switches are needed. Sizing both ways: a neighbouring 50 mm bore yields 982 N push at 0.5 MPa, while an 80 mm bore offers 2513 N. For load holding on air loss, the cushion only decelerates; specify a SAIL or BSAI lock variant, or an external pilot check valve.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI63X80N
- ✓ 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 SI63X80N FAQ
Yes, the AirTAC SI63X80N is discontinued. The direct replacement is the SAI63X80N. It is a true ISO 15552 profile cylinder that matches the original 63 mm bore, 80 mm stroke, output force, and G3/8 port, dropping directly into existing mounts.
The 63 mm bore features a G3/8 air port and a 20 mm rod. 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.
Request a Quote for the SAI63X80N
Send us the quantity and destination. We confirm price, stock and lead time on the SAI63X80N replacement — usually within 7-8 hours.