Airtac SAI63 Standard Cylinder SAI63AX50
The AirTAC Airtac SAI63 Standard Cylinder SAI63AX50 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø63mm bore and 50mm 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
- Stroke50 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- CushionAdjustable, 36 mm
About the Airtac SAI63 Standard Cylinder SAI63AX50
The AirTAC SAI63X50 is a double-acting ISO 15552 profile cylinder engineered for compact, high-force actuation. It generates 1559N of push force at 0.5 MPa, making it highly effective for short-stroke clamping and heavy lifting tasks. The extruded aluminum barrel design omits tie-rods, providing a clean exterior that simplifies mounting and sensor placement.
Equipped with a SUS420J2 stainless steel piston rod (material code A), this unit offers superior corrosion and wear resistance compared to standard carbon steel. The pneumatic connections utilize PT tapered threads, ensuring robust, leak-free sealing in demanding industrial environments.
Airtac SAI63 Standard Cylinder SAI63AX50 Technical Specifications
| Model | Airtac SAI63 Standard Cylinder SAI63AX50 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø63 mm |
| Stroke | 50 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 SAI63AX50
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 63 | Bore size in mm. |
| ×50 | 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 SAI63AX50 Is Used
Heavy-Duty Clamping
Ideal for securing heavy metal workpieces during machining, utilizing its 1559N push force to maintain rigid positioning.
Stamping Press Feed
Provides the robust, short-stroke actuation needed to feed thick materials into stamping presses under high load.
Press Fit Assembly
Delivers consistent downward force for pressing bearings or bushings into housings on automated assembly lines.
Is the Airtac SAI63 Standard Cylinder SAI63AX50 the Right Cylinder?
Select this 63mm bore when a 50mm stroke provides the necessary motion without the spatial footprint of longer units. If your application requires less force, stepping down to a 50mm bore yields 982N at 0.5 MPa, while sizing up to an 80mm bore provides 2513N for heavier loads. Because the stroke is under 300mm, rod-bearing bending is minimal, though external guides should still be used for heavy off-center loads.
As a true ISO 15552 cylinder, it serves as a drop-in replacement for any standard 63mm bore, 50mm stroke profile cylinder with G3/8 or PT ports. Mounting accessories like FA flanges or TC trunnions attach seamlessly. Note that standard SAI cylinders rely on air pressure to hold position; if the air supply is lost, the piston will drift. For dead-load holding, consider the SAIL variant with an air-released lock.
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 SAI63AX50 FAQ
At 0.5 MPa operating pressure, this 63mm bore cylinder provides 1559N of push force and 1402N of pull force. At 0.7 MPa, the push force increases to 2182N.
No, the standard SAI cylinder is double-acting and will drift if air pressure is lost or the valve is centered. The adjustable air cushion only decelerates the piston at stroke end. For fail-safe load holding, use the SAIL variant with an air-released lock.
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