This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI63X1300, 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.

The AirTAC SI63 Standard Cylinder SI63X1300 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø63mm bore and 1300mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI63X1300, which matches its ISO interface, bore, stroke, force and mounting.
The AirTAC SI63X1300 is a discontinued double-acting ISO 15552 profile cylinder with a 63mm bore and 1300mm stroke. It delivers 1559 N push force at 0.5 MPa through a G3/8 port. The direct replacement is the SAI63X1300, which matches the original ISO 15552 mounting interface, bore, stroke, force and porting exactly.
The SAI upgrade features a new piston seal with two Y-shaped one-way elements for low start-up pressure and long life. Note that this specific SKU lacks a magnet (-S), so it cannot accept CS1-B or DS1-B sensors.
| Model | Airtac SI63 Standard Cylinder SI63X1300 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI63X1300 |
| Bore size | Ø63 mm |
| Stroke | 1300 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 SAI63X1300 carries the same ISO 15552 ratings. Confirm against the product label before installation. Thread options: PT / G / NPT.
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 1559 N | 1402 N |
| 0.7 MPa | 2182 N | — |
| Max (@1.0 MPa) | 318 kgf | |
The SAI63X1300 produces the same force from the same bore. Actual usable force is lower than theoretical; size with a margin.
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 63 | Bore size in mm. |
| ×1300 | 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).
Pushes workpieces between distant machining stations over a 1300mm travel distance using a 1559 N push force at 0.5 MPa.
Drives extended carriage movements in large format automated assembly lines, requiring external guides to prevent rod bending.
To replace the SI63X1300, order the SAI63X1300 and confirm the ISO 15552 mounting interface, G3/8 port, and M16x1.5 rod thread. Because this 1300mm stroke is long, use external guides to prevent rod bending and side-load damage. Sizing both ways: a 50mm bore yields 982 N push at 0.5 MPa, while an 80mm bore yields 2513 N. A plain cylinder drifts on air loss—the cushion only decelerates—so use an external rod lock, pilot check valve, or the SAIL/BSAI lock variant to hold loads. The SAIF variant adds a built-in valve if needed.
Replacement checklist
Yes, the SI63X1300 is discontinued. The direct replacement is the SAI63X1300. It is dimensionally interchangeable per ISO 15552, matching the 63mm bore, 1300mm stroke, G3/8 port, and mounting hardware, but adds an upgraded two Y-shaped element piston seal for longer life.
The 63mm bore uses a G3/8 port. At 0.5 MPa it provides 1559 N push and 1402 N pull force. At 0.7 MPa the push force is 2182 N, and at 0.9 MPa it is 2805 N. The theoretical maximum force is 318 kgf at 1.0 MPa.
Send us the quantity and destination. We confirm price, stock and lead time on the SAI63X1300 replacement — usually within 7-8 hours.