Airtac SAI63 Standard Cylinder SAI63AX120
The AirTAC Airtac SAI63 Standard Cylinder SAI63AX120 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø63mm bore and 120mm 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
- Stroke120 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- CushionAdjustable, 36 mm
About the Airtac SAI63 Standard Cylinder SAI63AX120
The AirTAC SAI63X120 is a double-acting ISO 15552 profile cylinder engineered to deliver 1559 N of push force at 0.5 MPa. Its 120 mm stroke provides the exact mid-range travel needed for automated clamping and part ejection. Because it uses an extruded aluminum barrel rather than traditional tie-rods, it offers a compact exterior and integrated dual sensor grooves for straightforward position detection.
This specific configuration features a SUS420J2 stainless steel piston rod (material code A) for superior corrosion resistance in humid or mildly chemically washed environments. It utilizes PT tapered port threads and is prepared without an internal magnet. For operations that require end-position feedback, you would specify the -S option to enable CMSE or DMSE sensor switches.
Airtac SAI63 Standard Cylinder SAI63AX120 Technical Specifications
| Model | Airtac SAI63 Standard Cylinder SAI63AX120 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø63 mm |
| Stroke | 120 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 SAI63AX120
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 63 | Bore size in mm. |
| ×120 | 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 SAI63AX120 Is Used
Automated Clamping
Provides 1559 N of push force at 0.5 MPa, making it highly effective for securing heavy metal castings during CNC machining operations.
Package Diverting
The 120 mm stroke offers rapid, precise movement for actuating diverter arms on high-throughput packaging and sorting conveyor lines.
Part Ejection
Delivers reliable force to eject molded components from production tooling, utilizing its SUS420J2 stainless steel rod to resist workshop moisture.
Is the Airtac SAI63 Standard Cylinder SAI63AX120 the Right Cylinder?
When sizing this ISO 15552 actuator, stepping down to the 50 mm bore drops the 0.5 MPa thrust to 982 N, while moving up to the 80 mm bore increases it to 2513 N. The 63 mm bore is the optimal middle ground for 1.5 kN workloads. A 120 mm stroke is well within standard support limits, so rod-bearing bending is minimal, though external guidance is recommended if absorbing heavy lateral loads.
This cylinder serves as a dimensionally interchangeable drop-in replacement for other ISO 15552 profile cylinders, matching the 63 mm bore, 120 mm stroke, G3/8 PT port, and M16x1.5 rod thread specifications. If your machinery must hold a load vertically without continuous air pressure, note that the standard adjustable air cushions only decelerate the piston and do not lock it. For true fail-safe holding, select the SAIL variant with an air-released lock or the BSAI clamp-lock version.
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 SAI63AX120 FAQ
At a 0.5 MPa operating pressure, the SAI63X120 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 SAI63X120 is a genuine AirTAC ISO 15552 profile cylinder, meaning its mounting dimensions are fully interchangeable with other ISO 15552 standard cylinders of the same bore and stroke.
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