Airtac SAI63 Standard Cylinder SAI63AX20
The AirTAC Airtac SAI63 Standard Cylinder SAI63AX20 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø63mm bore and 20mm 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
- Stroke20 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- CushionAdjustable, 36 mm
About the Airtac SAI63 Standard Cylinder SAI63AX20
The AirTAC SAI63X20 is a double-acting ISO 15552 profile cylinder with a 63mm bore and 20mm stroke. It delivers 1559N push force at 0.5MPa, making it a robust choice for short-range clamping and ejection tasks. The extruded aluminum barrel eliminates tie rods, providing a clean exterior and saving space.
This specific configuration features a SUS420J2 stainless steel piston rod (material code A) for superior corrosion resistance in humid environments. It uses PT tapered port threads and lacks a magnet, meaning it is optimized purely for mechanical actuation without sensor switch integration.
Airtac SAI63 Standard Cylinder SAI63AX20 Technical Specifications
| Model | Airtac SAI63 Standard Cylinder SAI63AX20 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø63 mm |
| Stroke | 20 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 SAI63AX20
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 63 | Bore size in mm. |
| ×20 | 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 SAI63AX20 Is Used
Short-Stroke Clamping
Ideal for holding heavy metal workpieces securely during machining operations using its 1559N force.
High-Force Ejection
Quickly ejects finished parts from press beds or molds where a short, powerful thrust is required.
Compact Positioning
Moves heavy stops or gates precisely over short distances in confined automation layouts.
Is the Airtac SAI63 Standard Cylinder SAI63AX20 the Right Cylinder?
Choose this 63mm bore when 40mm (628N at 0.5MPa) is too weak, but 80mm (2513N) is oversized. The 20mm stroke is ideal for compact, high-force movements. For applications requiring position holding without air pressure, select the SAIL (air-released lock) or BSAI (bidirectional clamp-lock) variant instead of the standard cylinder. Being dimensionally interchangeable per ISO 15552, it serves as a drop-in replacement for other ISO 15552 profile cylinders.
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 SAI63AX20 FAQ
At 0.5 MPa, the push force is 1559N and the pull force is 1402N. At 0.7 MPa, the push force reaches 2182N.
This specific configuration does not include a magnet (-S), so it cannot use CMSE or DMSE sensors. You would need the -S variant for switch integration.
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