This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI63X1400S, 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 SI63X1400S
The AirTAC Airtac SI63 Standard Cylinder SI63X1400S 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 SAI63X1400S, 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 → SAI63X1400S
- 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 SI63X1400S
The AirTAC SI63X1400S is a discontinued double-acting ISO 15552 profile cylinder featuring an extruded aluminum barrel and a built-in piston magnet. In this 63 mm bore class it delivers 1559 N push and 1402 N pull at 0.5 MPa, utilizing a G3/8 air port and a M16x1.5 rod thread. AirTAC replaced the legacy SI family with the SAI63X1400S, a direct replacement retaining the exact ISO 15552 mounting interface, 1400 mm stroke, force ratings, and porting.
The upgraded SAI features a modernized piston seal with two Y-shaped one-way elements for low start-up pressure and extended life. The SAI family also introduces variants the SI lacked, such as the SAIL air-released lock and BSAI clamp-lock, while the original -S magnet supports legacy CS1-B/DS1-B sensors.
Airtac SI63 Standard Cylinder SI63X1400S Technical Specifications
| Model | Airtac SI63 Standard Cylinder SI63X1400S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI63X1400S |
| 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 SAI63X1400S 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 SAI63X1400S 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 SI63X1400S
| 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 SI63X1400S Is Used
Long-Stroke Material Push
Ideal for transferring heavy pallets across wide conveyor gaps using the 1559 N push force at 0.5 MPa over the full 1400 mm extension.
Automated Press Ejection
Ejects formed parts from deep press beds, relying on the 30 mm adjustable air cushions to decelerate the rod smoothly at stroke ends.
Replacing the Airtac SI63 Standard Cylinder SI63X1400S with the SAI63X1400S
To replace the SI63X1400S, order the SAI63X1400S direct equivalent, verifying the ISO 15552 mounting interface, G3/8 port thread (PT/G/NPT), and your specific mounting accessory (LB, FA, TC, etc.). The 1400 mm stroke falls within the 1500 mm standard limit but requires external guides to prevent rod bending and side-load damage over such a long extension. Sizing both ways: a neighboring 80 mm bore yields 2513 N push at 0.5 MPa, whereas dropping to a 50 mm bore reduces output to 982 N. A plain cylinder drifts without live air; for load holding on air loss, specify the SAIL lock variant or an external pilot check valve. The -S suffix confirms the magnet for CS1-B/DS1-B switches.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI63X1400S
- ✓ 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 SI63X1400S FAQ
Yes, the SI63X1400S is discontinued. The direct replacement is the AirTAC SAI63X1400S. It shares the identical ISO 15552 mounting interface, 63 mm bore, 1400 mm stroke, output force, and G3/8 port, fitting existing fixtures perfectly.
At 0.5 MPa it provides 1559 N push and 1402 N pull. Push force rises to 2182 N at 0.7 MPa and 2805 N at 0.9 MPa, with a theoretical max of 318 kgf at 1.0 MPa. Operating pressure is 0.15-1.0 MPa, speed is 30-800 mm/s, and it uses a G3/8 port.
Related AirTAC SAI Cylinders
Request a Quote for the SAI63X1400S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI63X1400S replacement — usually within 7-8 hours.