Airtac SAI63 Standard Cylinder SAI63AX55
The AirTAC Airtac SAI63 Standard Cylinder SAI63AX55 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø63mm bore and 55mm 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
- Stroke55 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- CushionAdjustable, 36 mm
About the Airtac SAI63 Standard Cylinder SAI63AX55
The AirTAC SAI63X55 is a double-acting ISO 15552 profile cylinder engineered to deliver 1559 N of push force at 0.5 MPa. Its 55 mm stroke is ideal for short-travel clamping and ejection tasks. The extruded aluminum barrel omits tie rods, presenting a clean exterior that resists mechanical interference.
This configuration features a SUS420J2 stainless steel piston rod (material code A), offering superior corrosion resistance compared to standard carbon steel. Fluid supply connects via PT tapered ports, and the adjustable air cushions at both ends ensure smooth deceleration. As a genuine AirTAC component, it guarantees precise dimensional interchangeability for ISO 15552 mounting layouts.
Airtac SAI63 Standard Cylinder SAI63AX55 Technical Specifications
| Model | Airtac SAI63 Standard Cylinder SAI63AX55 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø63 mm |
| Stroke | 55 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 SAI63AX55
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 63 | Bore size in mm. |
| ×55 | 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 SAI63AX55 Is Used
Short-Stroke Clamping
Provides robust 1559 N clamping force at 0.5 MPa for securing heavy metal workpieces during machining operations.
Product Diversion
Actuates routing gates on high-speed packaging lines where a quick 55 mm travel moves products between lanes.
Ejection Systems
Ejects molded parts from press beds, utilizing the adjustable end cushions to prevent impact damage on ejection.
Is the Airtac SAI63 Standard Cylinder SAI63AX55 the Right Cylinder?
Choose this 63 mm bore when an application requires more power than the 50 mm class (982 N at 0.5 MPa) but without the bulk of an 80 mm body (2513 N at 0.5 MPa). The 55 mm stroke keeps retracted length compact, making it highly suitable for tight machinery frames.
For positioning tasks, remember that the standard SAI relies on live air pressure; if air is lost, the piston will drift. Use the SAIL variant for pneumatic locking or the BSAI for bidirectional clamp-locking when fail-safe holding is mandatory. This unit is a direct dimensional replacement for any ISO 15552 cylinder sharing its 63 mm bore, 55 mm stroke, PT port, and standard mounting accessories.
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 SAI63AX55 FAQ
At an operating pressure of 0.5 MPa, the SAI63X55 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 SAI63X55 is built to the ISO 15552 standard, making it dimensionally interchangeable with other ISO 15552 profile cylinders of the same bore and stroke. Always verify your mounting hardware and PT port compatibility.
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