Airtac SAI63 Standard Cylinder SAI63AX325
The AirTAC Airtac SAI63 Standard Cylinder SAI63AX325 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø63mm bore and 325mm 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
- Stroke325 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- CushionAdjustable, 36 mm
About the Airtac SAI63 Standard Cylinder SAI63AX325
The AirTAC SAI63X325 is a double-acting ISO 15552 profile cylinder engineered to deliver 1559 N of push force at 0.5 MPa. Its 325 mm stroke makes it well-suited for mid-range linear actuation tasks requiring substantial travel. This genuine AirTAC unit features an extruded aluminum barrel without tie-rods, ensuring a rigid yet lightweight structure.
Beyond the standard specifications, this model is configured with a SUS420J2 stainless steel piston rod (material code A) for enhanced corrosion resistance in humid environments. It utilizes PT tapered port threads, and because it lacks the -S magnet option, it operates without integrated sensor grooves being actively utilized for position detection.
Airtac SAI63 Standard Cylinder SAI63AX325 Technical Specifications
| Model | Airtac SAI63 Standard Cylinder SAI63AX325 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø63 mm |
| Stroke | 325 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 SAI63AX325
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 63 | Bore size in mm. |
| ×325 | 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 SAI63AX325 Is Used
Automated Clamping
Provides 1559 N of secure clamping force at 0.5 MPa for holding heavy metal castings during CNC machining operations.
Package Diverting
Utilizes the 325 mm stroke to push heavy pallets or cartons smoothly across high-speed material handling lines.
Press Ejection
Cycles reliably at 30-800 mm/s to eject finished stamped parts from industrial press machinery.
Is the Airtac SAI63 Standard Cylinder SAI63AX325 the Right Cylinder?
Choose the 63 mm bore when an application requires more power than the 50 mm bore (which provides 982 N at 0.5 MPa) but does not need the bulk of an 80 mm bore (2513 N at 0.5 MPa). Because this 325 mm stroke exceeds the 300 mm threshold, the unsupported rod length is susceptible to bending under side loads; utilize an external guide rail or a guided cylinder to prevent premature rod-bearing wear.
As a dimensionally interchangeable ISO 15552 cylinder, it serves as a direct drop-in replacement matching the 63 mm bore, 325 mm stroke, G3/8 port, and standard mounting accessories like the LB foot or TC trunnion. Note that standard SAI cylinders drift when air pressure is lost; if your process requires true load holding upon exhaust, select the SAIL variant with an air-released lock or an external pilot-operated check valve.
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 SAI63AX325 FAQ
At a standard operating pressure of 0.5 MPa, the 63 mm bore generates 1559 N of push force and 1402 N of pull force. At 0.7 MPa, the push force increases to 2182 N.
Yes, the SAI63X325 is dimensionally interchangeable per ISO 15552. You can drop it in to replace other standard ISO 15552 cylinders with a 63 mm bore, 325 mm stroke, and G3/8 port.
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