Airtac SAI63 Standard Cylinder SAI63AX275
The AirTAC Airtac SAI63 Standard Cylinder SAI63AX275 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø63mm bore and 275mm 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
- Stroke275 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- CushionAdjustable, 36 mm
About the Airtac SAI63 Standard Cylinder SAI63AX275
The AirTAC SAI63X275 is a double-acting ISO 15552 profile cylinder featuring a 63mm bore and a 275mm stroke. It generates 1559N of push force and 1402N of pull force at 0.5MPa, making it well-suited for mid-weight industrial handling and clamping operations. The extruded aluminum barrel omits traditional tie-rods, providing a smooth, compact exterior that simplifies cleaning and reduces contamination traps.
This specific configuration features a SUS420J2 stainless steel piston rod (material code A) for enhanced corrosion resistance in humid or mildly chemically washed environments. It utilizes PT tapered port threads, and because a magnet is not specified, it does not include the internal magnetic ring required for direct switch sensing.
Airtac SAI63 Standard Cylinder SAI63AX275 Technical Specifications
| Model | Airtac SAI63 Standard Cylinder SAI63AX275 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø63 mm |
| Stroke | 275 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 SAI63AX275
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 63 | Bore size in mm. |
| ×275 | 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 SAI63AX275 Is Used
Automated Assembly Presses
Delivers 1559N of thrust at 0.5MPa for pressing bearings or pins into housings on automated assembly lines.
Product Diverters
Actuates heavy lane diverters on conveyor systems, utilizing the 275mm stroke to shift products between routing channels.
Pneumatic Clamping Stations
Holds heavy metal or composite workpieces securely during machining, leveraging the SUS420J2 stainless rod for durability.
Is the Airtac SAI63 Standard Cylinder SAI63AX275 the Right Cylinder?
If your application requires less force, stepping down to the 50mm bore neighbor yields 982N of push force at 0.5MPa, which might suffice for lighter packaging tasks. Conversely, moving up to the 80mm bore provides 2513N of thrust for heavier payloads. Because this 275mm stroke exceeds the 300mm side-load threshold is nearly met, be aware that long unsupported rods can bend under lateral stress; utilize an external guide rail or a guided cylinder to prevent premature rod-bearing wear.
When matching this for an ISO 15552 replacement, verify the 63mm bore, 275mm stroke, G3/8 port, and your required mounting accessory (such as an LB foot or TC trunnion). Remember that the standard adjustable air cushions only decelerate the piston near the end caps; they do not hold a load. If power or air pressure drops, the rod will drift. Use the SAIL variant for positive pneumatic locking or the BSAI bidirectional clamp-lock to secure loads safely without live pressure.
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 SAI63AX275 FAQ
At an operating pressure of 0.5MPa, the SAI63X275 provides a push force of 1559N and a pull force of 1402N. At 0.7MPa, the push force increases to 2182N.
Yes, the SAI63X275 is dimensionally interchangeable per ISO 15552 standards, serving as a drop-in replacement for other ISO 15552 profile cylinders of the same bore and stroke.
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