This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI63X1320S, 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 SI63X1320S
The AirTAC SI63 Standard Cylinder SI63X1320S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø63mm bore and 1320mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI63X1320S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ63 mm
- Stroke1320 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAI63X1320S
- 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 SI63X1320S
The AirTAC SI63X1320S is a discontinued double-acting ISO 15552 profile cylinder with a 63 mm bore and 1320 mm stroke. It delivers 1559 N push force at 0.5 MPa through a G3/8 port. AirTAC replaced this legacy unit with the SAI63X1320S, a direct upgrade sharing the exact ISO 15552 mounting interface, stroke, force, and accessories.
The SAI replacement features an upgraded piston seal with two Y-shaped one-way elements for low start-up pressure and extended life. The -S suffix means a built-in magnet for legacy CS1-B/DS1-B sensors; the SAI uses current AirTAC switches. Note that a 1320 mm stroke demands external guides to prevent rod bending under side loads.
Airtac SI63 Standard Cylinder SI63X1320S Technical Specifications
| Model | Airtac SI63 Standard Cylinder SI63X1320S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI63X1320S |
| Bore size | Ø63 mm |
| Stroke | 1320 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 SAI63X1320S 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 SAI63X1320S 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 SI63X1320S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 63 | Bore size in mm. |
| ×1320 | 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 SI63X1320S Is Used
Long-Stroke Material Transfer
Pushes heavy pallets 1320 mm between conveyor lines using 1559 N of force, guided by external rails to prevent rod bending.
Large Component Indexing
Shifts heavy chassis frames along an assembly track, using the G3/8 port for rapid 30-800 mm/s cycling and adjustable cushions.
Replacing the Airtac SI63 Standard Cylinder SI63X1320S with the SAI63X1320S
To replace the SI63X1320S, order the SAI63X1320S. Confirm the ISO 15552 mounting interface (LB, FA, CA, TC, etc.), the G3/8 port, and the M16x1.5 rod thread. Because this is a 1320 mm stroke, you must use external guides to prevent rod-bending and premature seal wear from side loads. Sizing down, a 50 mm bore gives 982 N push @0.5 MPa; sizing up, an 80 mm bore yields 2513 N. A plain cylinder drifts on air loss—the cushion only decelerates—so for load holding use an external pilot check valve or explore the SAIL (air-released lock) or BSAI (clamp-lock) variants the SI line lacked.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI63X1320S
- ✓ 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 SI63X1320S FAQ
Yes, the SI63X1320S is discontinued. The direct replacement is the AirTAC SAI63X1320S. It shares the identical ISO 15552 mounting interface, 63 mm bore, 1320 mm stroke, force, and G3/8 port, fitting existing fixtures perfectly while adding an upgraded piston seal.
The G3/8 port feeds a 20 mm rod. At 0.5 MPa it pushes 1559 N and pulls 1402 N. At 0.7 MPa push is 2182 N, and 2805 N at 0.9 MPa. The theoretical maximum force is 318 kgf at 1.0 MPa, with adjustable 30 mm cushions at both ends.
Related AirTAC SAI Cylinders
Request a Quote for the SAI63X1320S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI63X1320S replacement — usually within 7-8 hours.