This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI63X750, 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 SI63X750
The AirTAC Airtac SI63 Standard Cylinder SI63X750 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø63mm bore and 750mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI63X750, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ63 mm
- Stroke750 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAI63X750
- 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 SI63X750
The AirTAC SI63X750 is a discontinued double-acting ISO 15552 profile cylinder with a 63mm bore and 750mm stroke. Delivering 1559N push force at 0.5MPa via a G3/8 port, it is replaced by the SAI63X750. This direct upgrade matches the exact ISO 15552 mounting interface, bore, stroke, force, port and mounting accessories. The SAI features an upgraded piston seal with two Y-shaped one-way elements for low start-up pressure and long life.
Because this specific SKU lacks the -S magnet option, it cannot accept a position sensor. For load holding, note that a standard cylinder drifts on air loss; use an external pilot check valve or the SAI family's SAIL lock variant. The 750mm stroke requires external guides to prevent rod bending.
Airtac SI63 Standard Cylinder SI63X750 Technical Specifications
| Model | Airtac SI63 Standard Cylinder SI63X750 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI63X750 |
| Bore size | Ø63 mm |
| Stroke | 750 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 SAI63X750 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 SAI63X750 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 SI63X750
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 63 | Bore size in mm. |
| ×750 | 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 SI63X750 Is Used
Long-Stroke Diversion
Ideal for pushing heavy pallets off a main conveyor line across a 750mm gap, utilizing the 1559N thrust at 0.5MPa to overcome friction.
Large Press Ejection
Ejects formed metal components from heavy press beds, requiring the full 750mm travel to clear the tooling area completely.
Replacing the Airtac SI63 Standard Cylinder SI63X750 with the SAI63X750
To replace the discontinued SI63X750, order the SAI63X750. Confirm the ISO 15552 mounting interface (LB foot, FA/FB flange, CA/CB clevis, or TC trunnion), the G3/8 port, and the M16x1.5 rod thread. Since this SKU has no -S magnet, it cannot support sensing; if switches are needed, select an SAI63X750S and use current AirTAC sensors. Sizing both ways: the 63mm bore yields 1559N push at 0.5MPa, while the adjacent 50mm bore offers 982N and the 80mm bore provides 2513N. For load holding on air loss, a plain cylinder drifts; specify an external rod lock or the SAIL/BSAI lock variant. With a 750mm stroke, use external guides to prevent rod bending and manage side loads.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI63X750
- ✓ 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 SI63X750 FAQ
Yes, the AirTAC SI63X750 is discontinued. The direct replacement is the SAI63X750. It shares the exact ISO 15552 mounting interface, 63mm bore, 750mm stroke, output force, G3/8 port, and mounting accessories, fitting existing fixtures perfectly.
This double-acting cylinder features a G3/8 air port and M16x1.5 rod thread. Force output is 1559N push and 1402N pull at 0.5MPa, 2182N push at 0.7MPa, 2805N push at 0.9MPa, and a theoretical maximum of 318kgf at 1.0MPa. Speed is 30-800mm/s.
Request a Quote for the SAI63X750
Send us the quantity and destination. We confirm price, stock and lead time on the SAI63X750 replacement — usually within 7-8 hours.