Airtac SAI63 Standard Cylinder SAI63AX55S
The AirTAC Airtac SAI63 Standard Cylinder SAI63AX55S 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 SAI63AX55S
The AirTAC SAI63X55-S is a double-acting ISO 15552 profile cylinder featuring a 63mm bore and a 55mm stroke. It generates 1559 N of push force and 1402 N of pull force at 0.5 MPa, making it a robust choice for short-travel actuation. This specific configuration includes a SUS420J2 stainless steel rod for superior corrosion resistance and a magnet for position sensing.
Because it follows the ISO 15552 mounting interface, this cylinder serves as a drop-in replacement for other ISO 15552 profile cylinders. The extruded aluminum barrel includes sensor grooves on both sides, allowing seamless integration with CMSE or DMSE reed switches. Adjustable air cushions at both ends ensure smooth piston deceleration even at operating speeds up to 800 mm/s.
Airtac SAI63 Standard Cylinder SAI63AX55S Technical Specifications
| Model | Airtac SAI63 Standard Cylinder SAI63AX55S |
|---|---|
| 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 SAI63AX55S
| 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 SAI63AX55S Is Used
Short-Stroke Clamping
Ideal for holding heavy metal workpieces in CNC machining fixtures where high force and minimal stroke are required.
Product Ejection
Provides a fast, powerful 55mm punch to eject finished parts from conveyor lines before the next cycle begins.
Packaging Press
Used in end-of-line packaging to fold or seal heavy cardboard flaps with precise, repeatable force.
Is the Airtac SAI63 Standard Cylinder SAI63AX55S the Right Cylinder?
Choose this 63mm bore when a 50mm bore cylinder (offering 982 N push at 0.5 MPa) cannot meet your thrust requirements, but you want to avoid the bulk of an 80mm bore (2513 N push). The 55mm stroke is optimal for compact clamping or ejecting tasks where a standard 50mm stroke falls slightly short.
This model's PT tapered ports provide a tight, reliable pneumatic seal. If your machinery loses air pressure, the piston will drift and cannot hold a load; for position-holding safety, consider the SAIL variant with an air-released lock or 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 SAI63AX55S FAQ
At an operating pressure of 0.5 MPa, this 63mm bore cylinder provides a push force of 1559 N and a pull force of 1402 N.
Yes, the SAI63X55-S is dimensionally interchangeable per ISO 15552. You can use it as a drop-in replacement for other ISO 15552 profile cylinders with the same 63mm bore and 55mm stroke.
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