This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI63X1400STC, 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 SI63X1400STC
The AirTAC Airtac SI63 Standard Cylinder SI63X1400STC is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø63mm bore and 1400mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI63X1400STC, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ63 mm
- Stroke1400 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAI63X1400STC
- 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 SI63X1400STC
The AirTAC SI63X1400STC is a discontinued double-acting ISO 15552 profile cylinder with a 63mm bore and 1400mm stroke. It delivers 1559N push and 1402N pull at 0.5MPa, operating through a G3/8 port. AirTAC replaced this legacy unit with the SAI63X1400STC, a direct sharing the exact ISO 15552 mounting interface, TC trunnion, force, and stroke.
The SAI upgrade features two Y-shaped one-way piston seals for low start-up pressure and long life. The SAI family also adds SAIL, SAIF, and BSAI lock variants the SI lacked. Your -S suffix means a piston magnet for CS1-B/DS1-B sensors.
Airtac SI63 Standard Cylinder SI63X1400STC Technical Specifications
| Model | Airtac SI63 Standard Cylinder SI63X1400STC |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI63X1400STC |
| Bore size | Ø63 mm |
| Stroke | 1400 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 SAI63X1400STC 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 SAI63X1400STC 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 SI63X1400STC
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 63 | Bore size in mm. |
| ×1400 | 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 SI63X1400STC Is Used
Long-Stroke Transfer
Moves heavy pallets between machining centers using the 1400mm reach and 1559N push force at 0.5MPa.
Automated Press Feed
Advances bar stock into forming stations, relying on the G3/8 port and 30-800mm/s speed for rapid cycling.
Replacing the Airtac SI63 Standard Cylinder SI63X1400STC with the SAI63X1400STC
To replace the SI63X1400STC, order the SAI63X1400STC. Verify the ISO 15552 TC trunnion mount, 63mm bore, 1400mm stroke, G3/8 port, and the -S magnet. If you need less force, a 50mm bore gives 982N push at 0.5MPa; for more, an 80mm bore gives 2513N. Because this is a 1400mm stroke, use external guides to prevent rod bending and side-load damage. A plain cylinder drifts on air loss—the cushion only decelerates—so use an external rod lock or pilot check valve for holding, or specify the SAIL/BSAI lock variant. The -S magnet supports legacy CS1-B/DS1-B switches.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI63X1400STC
- ✓ 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 SI63X1400STC FAQ
Yes, the SI63X1400STC is discontinued. The direct replacement is the SAI63X1400STC. It shares the same ISO 15552 interface, 63mm bore, 1400mm stroke, G3/8 port, and TC mount, fitting existing fixtures perfectly.
The 63mm bore uses a G3/8 port. It generates 1559N push and 1402N pull at 0.5MPa, 2182N push at 0.7MPa, 2805N push at 0.9MPa, and a theoretical max of 318kgf at 1.0MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI63X1400STC
Send us the quantity and destination. We confirm price, stock and lead time on the SAI63X1400STC replacement — usually within 7-8 hours.