Airtac SAI63 Standard Cylinder SAI63AX25S
The AirTAC Airtac SAI63 Standard Cylinder SAI63AX25S 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 SAI63AX25S
The AirTAC SAI63X25-S is a double-acting ISO 15552 profile cylinder engineered for compact, high-force actuation. Operating at 0.5 MPa, it generates 1559 N of push force and 1402 N of pull force. The 25 mm stroke is optimal for short-travel clamping, pressing, or ejection tasks where space is restricted but substantial power is required.
This configuration includes a magnet for direct compatibility with CMSE and DMSE sensor switches, which seat neatly into the dual grooves on the extruded aluminum barrel. The piston rod is constructed from SUS420J2 stainless steel (material code A) for enhanced corrosion resistance, and it features PT tapered port threads to ensure a secure, leak-free pneumatic connection.
Airtac SAI63 Standard Cylinder SAI63AX25S Technical Specifications
| Model | Airtac SAI63 Standard Cylinder SAI63AX25S |
|---|---|
| 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 SAI63AX25S
| 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 SAI63AX25S Is Used
Short-Stroke Pressing
Delivers 1559 N of force at 0.5 MPa for seating bearings or stamping small components within a 25 mm travel range.
Heavy-Duty Ejection
Provides robust push-off force to eject dense finished parts from a machining center or conveyor line quickly.
Pallet Clamping
Secures heavy pallets or workpieces in a fixed position during packaging or machining operations using high clamping force.
Is the Airtac SAI63 Standard Cylinder SAI63AX25S the Right Cylinder?
Select this 63 mm bore when a 50 mm bore (providing 982 N push force at 0.5 MPa) lacks the necessary thrust for your operation. Conversely, if your application requires even greater power, stepping up to an 80 mm bore yields 2513 N at 0.5 MPa. Because the 25 mm stroke is very short, rod-bearing bending is minimal, eliminating the immediate need for external guides.
As a standard double-acting cylinder, this model relies on continuous air pressure to maintain its position. If air is lost or exhausted, the piston will drift. For operations that must hold a load securely without live pressure, consider the SAIL variant with an air-released lock or the BSAI bidirectional clamp-lock cylinder. This SAI unit serves as a dimensionally interchangeable drop-in replacement per ISO 15552, matching standard mounting interfaces, PT G3/8 ports, and standard accessories like FA flanges.
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 SAI63AX25S FAQ
At an operating pressure of 0.5 MPa, this 63 mm bore cylinder provides a push force of 1559 N and a pull force of 1402 N. If operated at 0.7 MPa, the push force increases to 2182 N.
Yes. The SAI63X25-S is built to the ISO 15552 profile standard, making it dimensionally interchangeable with other ISO 15552 cylinders. It shares standard mounting dimensions, G3/8 PT ports, and a 25 mm stroke.
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