Airtac SAI63 Standard Cylinder SAI63AX550
The AirTAC Airtac SAI63 Standard Cylinder SAI63AX550 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø63mm bore and 550mm 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
- Stroke550 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- CushionAdjustable, 36 mm
About the Airtac SAI63 Standard Cylinder SAI63AX550
The AirTAC SAI63X550 is a double-acting profile cylinder with a 63mm bore and 550mm stroke, designed to ISO 15552 dimensional standards for direct mounting interchangeability. It generates 1559 N of push force at 0.5 MPa, extending to 2182 N at 0.7 MPa, making it well-suited for medium-duty automation tasks requiring a long travel distance.
This specific configuration features a SUS420J2 stainless steel piston rod for enhanced corrosion resistance compared to standard carbon steel. The barrel utilizes extruded aluminum with sensor grooves on both sides, and air connections use PT tapered threads. Adjustable air cushions at both ends decelerate the piston to prevent end-cap impact.
Airtac SAI63 Standard Cylinder SAI63AX550 Technical Specifications
| Model | Airtac SAI63 Standard Cylinder SAI63AX550 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø63 mm |
| Stroke | 550 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 SAI63AX550
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 63 | Bore size in mm. |
| ×550 | 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 SAI63AX550 Is Used
Long-Travel Material Push
Ideal for pushing pallets or product queues along extended conveyor sections where a 550mm stroke and 1559 N of force at 0.5 MPa are required to overcome friction.
Multi-Stage Assembly Press
Suitable for actuating secondary assembly stages that require reaching across a wide machine envelope before applying a mid-range clamping or pressing force.
Diverting Arm Mechanism
Drives long diverting arms in sortation systems where the extended stroke provides the physical clearance needed to reroute packages effectively.
Is the Airtac SAI63 Standard Cylinder SAI63AX550 the Right Cylinder?
Choose this 63mm bore when an application requires more force than the 50mm version (982 N at 0.5 MPa) but does not need the bulk of an 80mm cylinder (2513 N at 0.5 MPa). At 550mm of stroke, the unsupported rod length is substantial; long strokes amplify side-load friction and accelerate rod-bearing wear. To prevent bending, guide the load externally using linear rails rather than relying solely on the piston rod.
This model uses a G3/8 port and M16x1.5 rod thread. If the machine layout requires the load to remain mechanically fixed during a pressure loss or exhaust event, note that the standard SAI air cushion only decelerates motion and does not lock the rod. For positive holding, specify the SAIL variant with an air-released lock or use 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 SAI63AX550 FAQ
The SAI63X550 generates a push force of 1559 N at 0.5 MPa and 2182 N at 0.7 MPa. The theoretical maximum force at 1.0 MPa is 318 kgf.
Yes, the SAI63X550 is dimensionally interchangeable per ISO 15552 standards. It matches standard mounting interfaces and accessories (LB, FA, TC) of other ISO 15552 profile cylinders, allowing for a drop-in replacement.
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