This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI63X1350, 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 SI63X1350
The AirTAC Airtac SI63 Standard Cylinder SI63X1350 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø63mm bore and 1350mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI63X1350, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ63 mm
- Stroke1350 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAI63X1350
- 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 SI63X1350
The AirTAC SI63X1350 is a discontinued double-acting ISO 15552 profile cylinder with a 63 mm bore and 1350 mm stroke. It delivers 1559 N push force at 0.5 MPa via a G3/8 port. The direct replacement is the SAI63X1350, matching the interface, bore, stroke, force and mounting exactly.
The SAI upgrade features a new 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, it cannot accept a CS1-B/DS1-B sensor. For load holding, note the air cushion only decelerates; use an external rod lock or pilot check valve.
Airtac SI63 Standard Cylinder SI63X1350 Technical Specifications
| Model | Airtac SI63 Standard Cylinder SI63X1350 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI63X1350 |
| Bore size | Ø63 mm |
| Stroke | 1350 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 SAI63X1350 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 SAI63X1350 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 SI63X1350
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 63 | Bore size in mm. |
| ×1350 | 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 SI63X1350 Is Used
Long-Stroke Transfer
Pushes workpieces between machining stations over a 1350 mm span, utilizing the 1559 N thrust at 0.5 MPa.
Automated Press Ejection
Ejects finished parts from fixtures using the 2182 N push force available at 0.7 MPa operating pressure.
Replacing the Airtac SI63 Standard Cylinder SI63X1350 with the SAI63X1350
To replace the SI63X1350, order the SAI63X1350. Confirm the ISO 15552 mounting interface, the 63 mm bore, the 1350 mm stroke, the G3/8 port (PT/G/NPT thread options), and your mounting accessory. This SKU has no magnet, so it cannot support position sensing. Theoretical push is 318 kgf at 1.0 MPa; if undersized, step up to an 80 mm bore. At 1350 mm, prevent rod bending by guiding the load externally. A plain cylinder drifts on air loss, so for holding use an external rod lock, a pilot check valve, or the SAIL/BSAI lock variants.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI63X1350
- ✓ 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 SI63X1350 FAQ
Yes, the SI63X1350 is discontinued. The direct replacement is the SAI63X1350. It is dimensionally interchangeable per ISO 15552, matching the 63 mm bore, 1350 mm stroke, output force, G3/8 port and mounting accessories.
It is a double-acting cylinder with a 63 mm bore, 20 mm rod, M16x1.5 thread, 30 mm cushion, and G3/8 port. Speed is 30-800 mm/s. Forces are: 1559 N push and 1402 N pull at 0.5 MPa, 2182 N push at 0.7 MPa, 2805 N push at 0.9 MPa, and a 318 kgf max at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI63X1350
Send us the quantity and destination. We confirm price, stock and lead time on the SAI63X1350 replacement — usually within 7-8 hours.