Airtac SAI63 Standard Cylinder SAI63AX20S
The AirTAC Airtac SAI63 Standard Cylinder SAI63AX20S 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 SAI63AX20S
The AirTAC SAI63X20-S is a double-acting ISO 15552 profile cylinder engineered for short-stroke automation tasks. It provides a push force of 1559 N and a pull force of 1402 N at 0.5 MPa, making it a robust choice for compact actuation. The 20 mm stroke is optimal for high-cycle clamping or ejecting operations where space is strictly limited.
This specific configuration features a SUS420J2 stainless steel piston rod (material code A) for enhanced corrosion resistance in humid or mildly chemically exposed environments. Equipped with a built-in magnet (-S), it seamlessly integrates with CMSE and DMSE sensor switches via the dual-side grooves on the extruded aluminum barrel. The PT tapered port threads ensure a secure, leak-free pneumatic connection.
Airtac SAI63 Standard Cylinder SAI63AX20S Technical Specifications
| Model | Airtac SAI63 Standard Cylinder SAI63AX20S |
|---|---|
| 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 SAI63AX20S
| 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 SAI63AX20S Is Used
Part Ejection
Provides the rapid 1559 N punch needed to eject finished metal components from a machining center in a single stroke.
Package Diverting
Actuates a short-stroke diverter arm to sort heavy cartons on a conveyor line without occupying excessive machine footprint.
Clamping Jigs
Holds heavy workpieces securely in place during secondary processing operations using its robust 1402 N pull force.
Is the Airtac SAI63 Standard Cylinder SAI63AX20S the Right Cylinder?
Choose this 63 mm bore actuator when a 50 mm bore (982 N push at 0.5 MPa) lacks the necessary thrust, but an 80 mm bore (2513 N push at 0.5 MPa) is physically too large for your fixture. The 20 mm stroke excels in rapid, short-trip motions. Because the stroke is brief, rod-bearing side-load stress is minimal, though external guides are always recommended if the load is offset.
As a true ISO 15552 profile cylinder, this unit is dimensionally interchangeable with other ISO 15552 cylinders of the same bore. To replace a unit, match the 63 mm bore, 20 mm stroke, G3/8 port, and mounting accessories like FA flanges or TC trunnions. Note that the adjustable air cushions only decelerate the piston at stroke end; they do not hold loads. If pressure drops, the rod will drift—use an external pilot-operated check valve or the SAIL lock variant for position holding.
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 SAI63AX20S FAQ
At an operating pressure of 0.5 MPa, this double-acting 63 mm bore cylinder generates a push force of 1559 N and a pull force of 1402 N. At 0.7 MPa, the push force increases to 2182 N.
Yes, the SAI profile barrel is dimensionally interchangeable per ISO 15552 standards. You can drop it into existing mounts matching the 63 mm bore, 20 mm stroke, and G3/8 port size, provided you use the appropriate PT thread fittings.
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