Airtac SAI63 Standard Cylinder SAI63X400S
The AirTAC Airtac SAI63 Standard Cylinder SAI63X400S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø63mm bore and 400mm stroke, G3/8 air ports and adjustable end cushioning. Its standardized mounting interface makes it a drop-in replacement for other ISO 15552 cylinders in automation lines.
- BoreØ63 mm
- Stroke400 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- CushionAdjustable, 36 mm
About the Airtac SAI63 Standard Cylinder SAI63X400S
The AirTAC SAI63X400-S is a double-acting ISO 15552 profile cylinder engineered to deliver 1559 N of push force and 1402 N of pull force at 0.5 MPa. The 400 mm stroke provides the extended travel distance required for indexing parts between processing stations or actuating large gating mechanisms.
This variant includes a magnetic piston for direct compatibility with CMSE and DMSE reed switches, which seat neatly into the dual sensor grooves extruded on both sides of the aluminum barrel. The standard carbon steel piston rod offers robust wear resistance for general industrial cycling, while the adjustable air cushions at both ends ensure smooth deceleration across the long stroke.
Airtac SAI63 Standard Cylinder SAI63X400S Technical Specifications
| Model | Airtac SAI63 Standard Cylinder SAI63X400S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø63 mm |
| Stroke | 400 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, 36 mm |
| Max stroke | Up to 1500 mm |
Specifications follow the official AirTAC SAI series datasheet and ISO 15552 dimensions. Confirm against the product label before installation. Port options: G (BSPP) / 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 | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac SAI63 Standard Cylinder SAI63X400S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 63 | Bore size in mm. |
| ×400 | Stroke length in mm. |
| -S | Optional built-in magnet for sensor position sensing. |
Related SAI-family variants: SAID (double rod), SAIJ (adjustable stroke), SAIL (with lock), SAIF (with valve), BSAI (enclasp / clamp-lock), and SAI-S with built-in magnet. Rod material: carbon steel (blank) / SUS420J2 (A) / SUS304 (B); seals: TPU (blank) / Viton H / NBR N.
Where the Airtac SAI63 Standard Cylinder SAI63X400S Is Used
Pallet Transfer
Indexes heavy pallets between conveyor lanes over a 400 mm distance using 1559 N of thrust at 0.5 MPa.
Component Pusher
Stamps or pushes machined parts into staging fixtures with smooth end-of-stroke deceleration.
Warehouse Sortation
Actuates diverter arms to route packages, relying on the magnetic piston for precise end-position sensing.
Is the Airtac SAI63 Standard Cylinder SAI63X400S the Right Cylinder?
Selecting this 63 mm bore over the smaller 50 mm bore steps the thrust up from 982 N to 1559 N at 0.5 MPa, providing a solid safety margin for heavier payloads. If your application requires even greater force, the 80 mm bore yields 2513 N under the same pressure.
Because the 400 mm stroke creates a long unsupported rod extension, side loads can cause premature wear or bending at the rod bearing. For optimal longevity, guide the load externally or pair the cylinder with a linear guide rail. Additionally, the standard SAI relies on live air pressure to maintain its position; if pneumatic supply drops, the piston will drift. For fail-safe load holding without continuous pressure, specify the SAIL pneumatic lock variant or an external rod lock. This model uses a PT tapered G3/8 port and mounts via standard ISO 15552 accessories like FA flanges or TC trunnions.
Quick checklist
- ✓ Required force at your working pressure
- ✓ Stroke and mounting space
- ✓ Port/thread type (PT/NPT/G)
- ✓ Magnet (-S) for sensors?
- ✓ Side load — consider a guided cylinder
Installation & Maintenance Notes
- check Use clean air filtered to 40µm or finer.
- check Keep within 0.15 – 1.0 MPa operating pressure.
- check Avoid side load on the piston rod.
- check Adjust end cushion screws for smooth stops.
- check Use correct mounting accessory (FA/FB/CA/CB/LB/TC).
- check Installation by qualified personnel per AirTAC docs.
Airtac SAI63 Standard Cylinder SAI63X400S FAQ
At 0.5 MPa, the SAI63X400-S generates 1559 N of push force and 1402 N of pull force. If operated at 0.7 MPa, the push force increases to 2182 N.
Yes. The SAI63X400-S is dimensionally interchangeable per ISO 15552, meaning it shares the exact same mounting footprint and port locations as other standard ISO 15552 profile cylinders.
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