Airtac SAI63 Standard Cylinder SAI63AX550S
The AirTAC Airtac SAI63 Standard Cylinder SAI63AX550S 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 SAI63AX550S
The AirTAC SAI63X550-S is a double-acting ISO 15552 profile cylinder featuring a 63mm bore and a 550mm stroke. It delivers a robust 1559 N of push force at 0.5 MPa, making it well-suited for mid-range automation tasks requiring extended reach. The extruded aluminum barrel design omits tie-rods, providing a clean exterior and integrated dual sensor grooves.
This specific configuration includes a SUS420J2 stainless steel piston rod (material code A) for enhanced corrosion resistance in humid environments. The -S suffix indicates a built-in magnet, allowing seamless operation with CMSE and DMSE series reed switches for precise end-of-stroke position feedback. PT tapered port threads ensure a tight, reliable pneumatic connection.
Airtac SAI63 Standard Cylinder SAI63AX550S Technical Specifications
| Model | Airtac SAI63 Standard Cylinder SAI63AX550S |
|---|---|
| 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 SAI63AX550S
| 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 SAI63AX550S Is Used
Extended Reach Diverting
Ideal for pushing products across wider conveyor belts during sorting operations where a 550mm stroke is necessary to bridge the gap.
Pallet Positioning
Provides the 1559 N push force needed to align or stage pallets in automated storage systems, utilizing the extended stroke for varied pallet sizes.
Long-Stroke Ejection
Suitable for ejecting finished parts from deep machinery beds, where the SUS420J2 rod material resists moisture from coolant environments.
Is the Airtac SAI63 Standard Cylinder SAI63AX550S the Right Cylinder?
Choose this 63mm bore cylinder when a 50mm bore (offering 982 N push at 0.5 MPa) lacks the necessary thrust, but an 80mm bore (2513 N at 0.5 MPa) would be physically oversized. The 550mm stroke provides ample travel for packaging and material handling, but at this length, side loads can cause rod-bearing bending and premature wear. To manage this, implement an external guide rail or select a fully guided cylinder to absorb lateral forces.
For any application requiring the load to be held in place without continuous air pressure, note that the standard adjustable air cushions only decelerate the piston near stroke end. They do not act as a locking mechanism. If static holding is required, specify the SAIL variant with an air-released lock or the BSAI bidirectional clamp-lock cylinder. This model is dimensionally interchangeable per ISO 15552; match the 63mm bore, 550mm stroke, G3/8 port, and desired mounting accessories like TC trunnions or LB foot brackets.
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 SAI63AX550S FAQ
At 0.5 MPa, the push force is 1559 N and the pull force is 1402 N. If higher pressure is utilized, the push force reaches 2182 N at 0.7 MPa and 2805 N at 0.9 MPa.
Yes, the SAI series is a genuine ISO 15552 profile cylinder. It is dimensionally interchangeable with other ISO 15552 cylinders, ensuring mounting interface compatibility without requiring machinery modifications.
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