This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI63X730, 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 SI63X730
The AirTAC Airtac SI63 Standard Cylinder SI63X730 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø63mm bore and 730mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI63X730, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ63 mm
- Stroke730 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAI63X730
- 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 SI63X730
The AirTAC SI63X730 is a discontinued double-acting ISO 15552 profile cylinder with a 63 mm bore and 730 mm stroke. Delivering 1559 N push force at 0.5 MPa via a G3/8 port, it is replaced by the SAI63X730. This direct successor shares the exact ISO 15552 mounting interface, bore, stroke and output force.
The SAI upgrade features two Y-shaped one-way piston seals for low start-up pressure and long life. Note this non-magnet SKU cannot take a sensor; legacy CS1-B/DS1-B switches required the -S option.
Airtac SI63 Standard Cylinder SI63X730 Technical Specifications
| Model | Airtac SI63 Standard Cylinder SI63X730 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI63X730 |
| Bore size | Ø63 mm |
| Stroke | 730 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 SAI63X730 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 SAI63X730 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 SI63X730
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 63 | Bore size in mm. |
| ×730 | 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 SI63X730 Is Used
Long-Stroke Diversion
Pushes packages across transfer lines using the 730 mm stroke, relying on external guides to prevent rod bending during the extended travel.
Pallet Push-Off
Generates 1559 N at 0.5 MPa to index loaded pallets, safely operating within the 935 N working load margin for reliable shifting.
Replacing the Airtac SI63 Standard Cylinder SI63X730 with the SAI63X730
To replace the SI63X730, order the SAI63X730. Verify your ISO 15552 mounting accessory (LB, FA, CA, TC), the G3/8 port thread (PT/G/NPT) and the M16x1.5 rod end. Because this SKU lacks the -S magnet, it cannot accept position sensors. If sizing alternatives, a 50 mm bore gives 982 N push at 0.5 MPa, while an 80 mm bore yields 2513 N. For the 730 mm stroke, use an external guide to prevent rod bending and side loads. The air cushion only decelerates; it does not hold load. For load holding on air loss, use an external pilot check valve or the SAIL/BSAI lock variants.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI63X730
- ✓ 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 SI63X730 FAQ
Yes, the SI63X730 is discontinued. The direct replacement is the SAI63X730. It shares the identical ISO 15552 mounting interface, 63 mm bore, 730 mm stroke, output force and G3/8 port, fitting existing fixtures perfectly.
The 63 mm bore uses a G3/8 port. At 0.5 MPa it provides 1559 N push and 1402 N pull. 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 SAI63X730
Send us the quantity and destination. We confirm price, stock and lead time on the SAI63X730 replacement — usually within 7-8 hours.