Airtac SAI63 Standard Cylinder SAI63AX450
The AirTAC Airtac SAI63 Standard Cylinder SAI63AX450 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø63mm bore and 450mm 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
- Stroke450 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- CushionAdjustable, 36 mm
About the Airtac SAI63 Standard Cylinder SAI63AX450
The AirTAC SAI63X450 is a double-acting ISO 15552 profile cylinder engineered to deliver a push force of 1559 N at 0.5 MPa and a pull force of 1402 N. Its 450 mm stroke provides the extended travel needed for positioning heavier fixtures or actuating multi-stage packaging equipment. The extruded aluminum barrel design omits tie rods, ensuring a clean exterior that drops directly into existing ISO 15552 mounting footprints.
This specific configuration utilizes a SUS420J2 stainless steel piston rod (material code A) for enhanced resistance to moisture and corrosion compared to standard carbon steel. It features PT tapered port threads and lacks a standard magnet, meaning position sensing via CMSE or DMSE switches is not supported unless a -S variant is specified. Adjustable air cushions at both ends absorb kinetic energy to protect the end caps over long cycles.
Airtac SAI63 Standard Cylinder SAI63AX450 Technical Specifications
| Model | Airtac SAI63 Standard Cylinder SAI63AX450 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø63 mm |
| Stroke | 450 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 SAI63AX450
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 63 | Bore size in mm. |
| ×450 | 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 SAI63AX450 Is Used
Fixture Positioning
Provides the 1559 N thrust required to shift heavy machining fixtures along a linear rail over a 450 mm travel distance.
Package Diverting
Extends across a 450 mm stroke to push heavy cartons or totes from a main conveyor belt onto a secondary sorting lane.
Material Handling
Actuates large gating mechanisms or lifts workpieces into processing stations where a 50 mm bore would stall under load.
Is the Airtac SAI63 Standard Cylinder SAI63AX450 the Right Cylinder?
Selecting this 63 mm bore is ideal when a 50 mm bore (offering 982 N push at 0.5 MPa) lacks the thrust for your load, but an 80 mm bore (providing 2513 N) would be physically oversized and consume excess air. Because the 450 mm stroke creates a long unsupported rod extension, side loads can induce severe bending stresses on the rod bearing. For this reason, external linear guides or a dedicated guided cylinder are strongly recommended to prevent premature seal wear and piston drift.
This model uses a G3/8 PT port and is dimensionally interchangeable with other ISO 15552 cylinders. You can pair it with FA or FB flange accessories, or TC trunnion mounts, to suit your frame. Remember that the standard SAI does not hold its position if air pressure drops; for dead-load holding, consider the SAIL variant with an air-released lock or an external pilot 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 SAI63AX450 FAQ
At 0.5 MPa operating pressure, this 63 mm bore cylinder generates a push force of 1559 N and a pull force of 1402 N. If pressure is increased to 0.7 MPa, the push force rises to 2182 N.
Yes, the SAI63X450 is a true profile-type ISO 15552 cylinder. Its mounting dimensions and G3/8 PT ports make it a drop-in replacement for other ISO 15552 standard cylinders of the same bore size.
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