This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI63X600, 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 SI63X600
The AirTAC Airtac SI63 Standard Cylinder SI63X600 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø63mm bore and 600mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI63X600, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ63 mm
- Stroke600 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAI63X600
- 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 SI63X600
The AirTAC SI63X600 is a discontinued double-acting ISO 15552 profile cylinder with a 63mm bore and 600mm stroke. Delivering 1559 N push force at 0.5 MPa via a G3/8 port, it is replaced by the SAI63X600. This direct successor matches the exact interface, bore, stroke, force, port and mounting. The SAI features an upgraded piston seal with two Y-shaped one-way elements for low start-up pressure and long life.
This SKU lacks the -S magnet, meaning it cannot accept a CS1-B or DS1-B sensor. The SAI family also introduces variants the SI lacked, such as the SAIL air-released lock, SAIF built-in 4M valve, and BSAI clamp-lock. Operating pressure is 0.15-1.0 MPa, with a Viton H seal option raising the temperature range to 0-150 C. Because this is a 600mm stroke, external guides are recommended to prevent rod bending under side loads.
Airtac SI63 Standard Cylinder SI63X600 Technical Specifications
| Model | Airtac SI63 Standard Cylinder SI63X600 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI63X600 |
| Bore size | Ø63 mm |
| Stroke | 600 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 SAI63X600 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 SAI63X600 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 SI63X600
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 63 | Bore size in mm. |
| ×600 | 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 SI63X600 Is Used
Long-Stroke Material Transfer
Pushes heavy pallets along a 600mm conveyor section using 1559 N of force at 0.5 MPa, requiring external guides to prevent rod bending.
Replacing the Airtac SI63 Standard Cylinder SI63X600 with the SAI63X600
To replace the SI63X600, order the SAI63X600. Confirm the ISO 15552 mounting interface, 63mm bore, 600mm stroke, G3/8 port (PT/G/NPT threads), and mounting accessory (LB, FA, CA, TC). This non-magnet SKU cannot take a sensor; order the SAI63X600S if position detection is needed. Sizing both ways: the 63mm bore gives 1559 N push at 0.5 MPa, while the 80mm neighbour yields 2513 N. A plain cylinder does not hold load on air loss; the cushion only decelerates. For load holding, use an external rod lock, pilot check valve, or the SAIL/BSAI lock variant. For 600mm strokes, add external guides to prevent rod bending.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI63X600
- ✓ 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 SI63X600 FAQ
Yes, the AirTAC SI63X600 is discontinued and end-of-life. The direct replacement is the SAI63X600. It is dimensionally interchangeable per ISO 15552, offering the same 63mm bore, 600mm stroke, output force, G3/8 port, and mounting interface. You simply order the SAI63X600 for your existing fixtures.
The 63mm bore features a G3/8 port and provides a push force of 1559 N and pull force of 1402 N at 0.5 MPa. At 0.7 MPa it pushes 2182 N, and 2805 N at 0.9 MPa. The theoretical maximum force is 318 kgf at 1.0 MPa. Speed is 30-800 mm/s.
Request a Quote for the SAI63X600
Send us the quantity and destination. We confirm price, stock and lead time on the SAI63X600 replacement — usually within 7-8 hours.