Airtac SAI63 Standard Cylinder SAI63X325
The AirTAC Airtac SAI63 Standard Cylinder SAI63X325 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 SAI63X325
The AirTAC SAI63X325 is a double-acting ISO 15552 profile cylinder engineered to deliver a push force of 1559 N at 0.5 MPa and a pull force of 1402 N. Its extruded aluminum barrel design omits tie rods, providing a smooth exterior that integrates seamlessly into modern pneumatic setups. The 325 mm stroke is well-suited for mid-range linear actuation tasks requiring substantial reach.
This model features a standard carbon steel piston rod for high tensile strength and uses PT tapered port threads (G3/8) for secure, leak-free pneumatic connections. For applications requiring end-of-stroke position detection, the barrel includes dual sensor grooves, allowing you to add CMSE or DMSE switches by specifying the -S magnet option.
Airtac SAI63 Standard Cylinder SAI63X325 Technical Specifications
| Model | Airtac SAI63 Standard Cylinder SAI63X325 |
|---|---|
| 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 SAI63X325
| 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 SAI63X325 Is Used
Automated Clamping
Provides the 1559 N push force required to secure heavy metal castings during CNC machining operations.
Material Diversion
Utilizes the 325 mm stroke to push medium-sized packages from a main conveyor belt into a secondary sorting lane.
Press Ejection
Cycles reliably at speeds up to 800 mm/s to eject formed parts from a hydraulic press bed.
Is the Airtac SAI63 Standard Cylinder SAI63X325 the Right Cylinder?
Choosing this 63 mm bore provides a significant thrust upgrade over the 50 mm variant, which offers 982 N of push force at 0.5 MPa, without stepping up to the larger 80 mm bore that requires more air volume. Because this model features a 325 mm stroke, the extended piston rod is susceptible to bending under side loads. To prevent premature rod-bearing wear, implement an external guide rail or select a guided cylinder for heavy offset loads.
This unit serves as a direct dimensional drop-in replacement for other ISO 15552 profile cylinders, matching standard mounting interfaces like the TC trunnion or FA flange. It features adjustable air cushions at both ends to decelerate the piston smoothly. Note that the standard SAI does not lock or hold a load when air pressure is removed; if your application requires fail-safe holding, consider the SAIL or BSAI variants.
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 SAI63X325 FAQ
At 0.5 MPa operating pressure, this 63 mm bore cylinder generates 1559 N of push force and 1402 N of pull force. If pressure is increased to 0.7 MPa, the push force rises to 2182 N.
Yes, the SAI63X325 is dimensionally interchangeable with other ISO 15552 profile cylinders. You can swap it directly using existing mounting hardware like foot brackets or trunnions, provided the port and stroke match.
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