Airtac SAI63 Standard Cylinder SAI63AX70
The AirTAC Airtac SAI63 Standard Cylinder SAI63AX70 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø63mm bore and 70mm 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
- Stroke70 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- CushionAdjustable, 36 mm
About the Airtac SAI63 Standard Cylinder SAI63AX70
The AirTAC SAI63X70 is a double-acting ISO 15552 profile cylinder offering a 1559 N push force at 0.5 MPa. Its 70 mm stroke provides rapid, short-travel actuation for mid-weight machinery.
This specific configuration features a SUS420J2 stainless steel piston rod (option A) for enhanced corrosion resistance. It utilizes PT tapered port threads and lacks a magnet, meaning it is optimized purely for mechanical force delivery rather than electronic position sensing.
Airtac SAI63 Standard Cylinder SAI63AX70 Technical Specifications
| Model | Airtac SAI63 Standard Cylinder SAI63AX70 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø63 mm |
| Stroke | 70 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 SAI63AX70
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 63 | Bore size in mm. |
| ×70 | 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 SAI63AX70 Is Used
Material Handling
Drives 70 mm diverters and mid-weight package pushers on processing lines.
Clamping Systems
Applies 1559 N of clamping pressure for machining fixtures and workholding.
Packaging Equipment
Executes rapid, short-travel cutting and sealing motions on packaging machinery.
Is the Airtac SAI63 Standard Cylinder SAI63AX70 the Right Cylinder?
With a 1559 N output at 0.5 MPa, this 63 mm bore sits comfortably between the 50 mm (982 N) and 80 mm (2513 N) sizes. If your application requires less push strength, step down to the 50 mm bore; if you need to move heavier fixtures, consider the 80 mm option.
Because this is a standard double-acting cylinder, it will not hold a load if air pressure is lost or the valve is centered. For position-holding safety, consider the SAIL variant with an air-released lock. As a true ISO 15552 profile cylinder, it serves as a drop-in replacement for any standard 63 mm bore, 70 mm stroke unit with a G3/8 port and standard mounting accessories like FA flanges or TC trunnions.
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 SAI63AX70 FAQ
At 0.5 MPa operating pressure, the SAI63X70 generates a 1559 N push force and a 1402 N pull force. At 0.7 MPa, the push force increases to 2182 N.
Yes, the SAI63X70 is dimensionally interchangeable per ISO 15552. You can drop it directly into existing 63 mm bore, 70 mm stroke setups utilizing standard mounting accessories and a G3/8 port.
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