Airtac SAI63 Standard Cylinder SAI63BX25
The AirTAC SAI63 Standard Cylinder SAI63BX25 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 interchangeable with other ISO 15552 cylinders at the mounting interface.
- BoreØ63 mm
- Stroke25 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- CushionAdjustable, 36 mm
- 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 SAI63 Standard Cylinder SAI63BX25
The AirTAC SAI63X25 is a double-acting ISO 15552 profile cylinder engineered for short-stroke actuation. It delivers a push force of 1559 N and a pull force of 1402 N at 0.5 MPa, making it well-suited for compact clamping and ejection tasks. The extruded aluminum barrel design omits tie rods, providing a clean exterior that drops directly into standard ISO 15552 mounting footprints.
This specific configuration features a SUS304 stainless steel piston rod (material code B) for superior corrosion resistance in wet or washdown environments. It uses PT tapered port threads, and because no magnet is specified, it operates without integrated position sensing. Adjustable air cushions at both ends absorb impact, while standard NBR or TPU seals handle temperatures from -20 to +70 C.
Airtac SAI63 Standard Cylinder SAI63BX25 Technical Specifications
| Model | Airtac SAI63 Standard Cylinder SAI63BX25 |
|---|---|
| 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 SAI63BX25
| 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 SAI63BX25 Is Used
Short-Stroke Clamping
Provides 1559 N of clamping force at 0.5 MPa to secure heavy metal workpieces during machining operations within a tight 25 mm extension.
Package Ejection
Rapidly pushes items off a conveyor belt in material handling lines, utilizing the 30-800 mm/s speed range for high-throughput packaging.
Press Pin Insertion
Drives dowel pins or small fasteners into assemblies, relying on the rigid ISO 15552 profile barrel to maintain alignment during the brief 25 mm stroke.
Is the Airtac SAI63 Standard Cylinder SAI63BX25 the Right Cylinder?
Select this 63 mm bore when a 50 mm bore (982 N push at 0.5 MPa) lacks the necessary power for high-force clamping over a very short distance. The 25 mm stroke is ideal for tight spaces where a longer extension would cause interference. Because the stroke is short, side-load stress on the rod bearing is minimal compared to longer strokes.
If your application requires the load to remain held in place after air pressure is removed or exhausted, a standard SAI cylinder will drift and drop. For fail-safe load holding, consider the SAIL variant with an air-released lock, or integrate an external pilot-operated check valve. To retrofit this model, match the 63 mm bore, 25 mm stroke, G3/8 port, and choose mounting accessories like FA flange or LB foot brackets.
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 SAI63BX25 FAQ
At an operating pressure of 0.5 MPa, the SAI63X25 provides a push force of 1559 N and a pull force of 1402 N. If pressure is increased to 0.7 MPa, the push force reaches 2182 N.
Yes, the SAI63X25 is dimensionally interchangeable per ISO 15552. It serves as a direct replacement for other ISO 15552 profile cylinders of the same bore and stroke, provided you match the G3/8 port and mounting interface.
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