Airtac SAI63 Standard Cylinder SAI63AX25
The AirTAC Airtac SAI63 Standard Cylinder SAI63AX25 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø63mm bore and 25mm 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
- Stroke25 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- CushionAdjustable, 36 mm
About the Airtac SAI63 Standard Cylinder SAI63AX25
The AirTAC SAI63X25 is a double-acting ISO 15552 profile cylinder engineered for compact actuation, delivering a push force of 1559 N at 0.5 MPa. Its 25 mm stroke is optimal for short-travel clamping and ejection tasks where space is restricted.
This unit features a SUS420J2 stainless steel piston rod (material code A) for superior corrosion resistance in humid environments. It uses PT tapered port threads and lacks an internal magnet, relying purely on mechanical actuation without sensor groove integration.
Airtac SAI63 Standard Cylinder SAI63AX25 Technical Specifications
| Model | Airtac SAI63 Standard Cylinder SAI63AX25 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø63 mm |
| Stroke | 25 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 SAI63AX25
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 63 | Bore size in mm. |
| ×25 | 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 SAI63AX25 Is Used
Short-Stroke Clamping
Ideal for holding parts securely during machining operations within a confined fixture footprint.
Ejection Stations
Provides rapid, high-force ejection of finished components from automated press lines.
Valve Actuation
Delivers reliable linear thrust for operating heavy mechanical process valves.
Is the Airtac SAI63 Standard Cylinder SAI63AX25 the Right Cylinder?
Choose this 63 mm bore when a 50 mm bore (982 N at 0.5 MPa) lacks the necessary push strength for your tooling. For higher force demands, stepping up to an 80 mm bore yields 2513 N. Because the stroke is only 25 mm, side-load stress on the rod bearing is minimal.
As a true ISO 15552 profile barrel, it serves as a dimensionally interchangeable drop-in replacement for other ISO 15552 cylinders. Note that this standard cylinder will drift if air pressure is lost; use the SAIL locking variant if your application requires fail-safe load holding.
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 SAI63AX25 FAQ
At an operating pressure of 0.5 MPa, this 63 mm bore cylinder generates a push force of 1559 N and a pull force of 1402 N.
Yes, the SAI63X25 is a genuine ISO 15552 profile cylinder, making its mounting interface and envelope dimensions directly interchangeable with other standard ISO 15552 cylinders.
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