This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI63X80CA, 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 SI63X80CA
The AirTAC Airtac SI63 Standard Cylinder SI63X80CA 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 SAI63X80CA, 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 → SAI63X80CA
- 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 SI63X80CA
The AirTAC SI63X80CA is a discontinued double-acting ISO 15552 profile cylinder with a 63mm bore and 80mm stroke. It delivers 1559N push force at 0.5MPa via a G3/8 port. AirTAC replaced this legacy unit with the SAI63X80CA, a direct upgrade sharing the exact same CA clevis mounting interface, bore, stroke, and output force.
The SAI upgrade features a modernized piston seal with two Y-shaped one-way elements for low start-up pressure and extended life. Without a -S magnet, this specific SI SKU cannot accept a position switch like the legacy CS1-B/DS1-B sensors.
Airtac SI63 Standard Cylinder SI63X80CA Technical Specifications
| Model | Airtac SI63 Standard Cylinder SI63X80CA |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI63X80CA |
| 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 SAI63X80CA 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 SAI63X80CA 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 SI63X80CA
| 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 SI63X80CA Is Used
Clamp Actuation
Provides reliable 1559N clamping force at 0.5MPa for securing mid-weight workpieces during machining operations.
Package Diverting
Drives a 80mm stroke diverting arm to redirect moderate loads on packaging lines with effective end-of-stroke deceleration.
Replacing the Airtac SI63 Standard Cylinder SI63X80CA with the SAI63X80CA
To replace the SI63X80CA, order the SAI63X80CA. Confirm the ISO 15552 CA clevis mounting, 63mm bore, 80mm stroke, and G3/8 port. Because this SKU lacks an -S suffix, it has no magnet and cannot support sensors; if detection is needed, specify an SAI63X80CAS. Sizing alternatives: a 50mm bore yields 982N push at 0.5MPa, while an 80mm bore yields 2513N. Note that a plain cylinder drifts on air loss—the cushion only decelerates near stroke end. For load holding, use an external pilot check valve, rod lock, or the SAIL/BSAI lock variants. The SAI family also adds the SAIF integrated valve option (bores 32-100).
Replacement checklist
- ✓ Same ISO 15552 interface → SAI63X80CA
- ✓ 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 SI63X80CA FAQ
Yes, the SI63X80CA is discontinued. The direct replacement is the SAI63X80CA. It is dimensionally interchangeable per ISO 15552, retaining the same 63mm bore, 80mm stroke, CA clevis mount, and G3/8 port.
The 63mm bore features a G3/8 port and M16x1.5 rod thread. It delivers 1559N push and 1402N pull at 0.5MPa, 2182N push at 0.7MPa, 2805N at 0.9MPa, and a theoretical max of 318kgf at 1.0MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI63X80CA
Send us the quantity and destination. We confirm price, stock and lead time on the SAI63X80CA replacement — usually within 7-8 hours.