This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI63X1450, 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 SI63X1450
The AirTAC Airtac SI63 Standard Cylinder SI63X1450 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø63mm bore and 1450mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI63X1450, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ63 mm
- Stroke1450 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAI63X1450
- 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 SI63X1450
The AirTAC SI63X1450 is a discontinued double-acting ISO 15552 profile cylinder with a 63 mm bore and 1450 mm stroke. It delivers 1559 N push force at 0.5 MPa via a G3/8 port. The direct replacement is the SAI63X1450, matching the exact interface, force, and mounting.
This SKU lacks a magnet (-S) and cannot accept a sensor. The SAI upgrade features two Y-shaped piston seals for low start-up pressure. For high heat, Viton H seals raise the limit to 150 C.
Airtac SI63 Standard Cylinder SI63X1450 Technical Specifications
| Model | Airtac SI63 Standard Cylinder SI63X1450 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI63X1450 |
| Bore size | Ø63 mm |
| Stroke | 1450 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 SAI63X1450 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 SAI63X1450 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 SI63X1450
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 63 | Bore size in mm. |
| ×1450 | 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 SI63X1450 Is Used
Long-Stroke Transfer
Pushes workpieces between machining stations over a 1450 mm travel distance using its 1559 N thrust at 0.5 MPa.
High-Reach Ejection
Ejects packaged goods from elevated storage racks where an 80 mm bore would be excessive and a 50 mm bore lacks force.
Replacing the Airtac SI63 Standard Cylinder SI63X1450 with the SAI63X1450
To replace the SI63X1450, order the SAI63X1450. Verify the ISO 15552 mounting accessory (LB, FA, TC, etc.), the G3/8 port thread (PT/G/NPT), and the M16x1.5 rod thread. Because this is a non-magnet SKU, it cannot take CS1-B/DS1-B sensors; order an -S model if position detection is needed. The 1450 mm stroke demands external guides to prevent rod bending and side-load wear. Sizing options: a 50 mm bore gives 982 N push at 0.5 MPa, while an 80 mm bore yields 2513 N. The air cushion only decelerates; for load holding on air loss, use an external rod lock, pilot check valve, or the SAIL/BSAI lock variant.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI63X1450
- ✓ 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 SI63X1450 FAQ
Yes, the SI63X1450 is discontinued. The direct replacement is the SAI63X1450. It is dimensionally interchangeable per ISO 15552, retaining the same 63 mm bore, 1450 mm stroke, G3/8 port, and mounting fixtures.
It has a G3/8 air port. At 0.5 MPa it pushes 1559 N and pulls 1402 N. 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.
Related AirTAC SAI Cylinders
Request a Quote for the SAI63X1450
Send us the quantity and destination. We confirm price, stock and lead time on the SAI63X1450 replacement — usually within 7-8 hours.