Airtac SAI63 Standard Cylinder SAI63X45S
The AirTAC Airtac SAI63 Standard Cylinder SAI63X45S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø63mm bore and 45mm 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
- Stroke45 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- CushionAdjustable, 36 mm
About the Airtac SAI63 Standard Cylinder SAI63X45S
The AirTAC SAI63X45-S is a double-acting ISO 15552 profile cylinder engineered to deliver 1559 N of push force at 0.5 MPa. Its short 45 mm stroke makes it highly effective for compact positioning tasks that require substantial thrust without occupying excessive axial space. The extruded aluminum barrel design omits tie rods, presenting a clean exterior that drops seamlessly into standard ISO 15552 mounting interfaces.
Equipped with a magnetic piston (indicated by the -S suffix), this unit supports direct mounting of CMSE or DMSE reed switches along the integrated sensor grooves on both sides of the barrel. The standard carbon steel piston rod provides robust durability for general industrial pneumatics, while the adjustable air cushions at both ends ensure smooth deceleration even in rapid cycling operations.
Airtac SAI63 Standard Cylinder SAI63X45S Technical Specifications
| Model | Airtac SAI63 Standard Cylinder SAI63X45S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø63 mm |
| Stroke | 45 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 SAI63X45S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 63 | Bore size in mm. |
| ×45 | 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 SAI63X45S Is Used
Short-Stroke Clamping
Provides high holding force for securing heavy machined components during milling or drilling operations within a compact footprint.
Product Ejection
Delivers rapid, powerful ejection of finished parts from conveyor lines or press beds without requiring a long extension length.
Press Insertion
Drives bearings or pins into housings on automated assembly lines, utilizing the 63 mm bore's substantial thrust for reliable seating.
Is the Airtac SAI63 Standard Cylinder SAI63X45S the Right Cylinder?
Selecting this 63 mm bore variant is ideal when a 50 mm bore (982 N at 0.5 MPa) lacks sufficient power, but an 80 mm bore (2513 N) would be physically oversized for the machine envelope. The 45 mm stroke is optimal for short clamping or ejecting duties. Because the stroke is well under 300 mm, rod-bearing bending stress is minimal, though you should still rely on external guide rails if the load is heavily offset.
As a dimensionally interchangeable ISO 15552 cylinder, this model matches standard foot (LB), flange (FA), and trunnion (TC) mounting accessories. It features a PT tapered port thread and a G3/8 air supply connection. Note that the standard SAI does not mechanically hold a load if air pressure drops; for fail-safe locking requirements, consider the SAIL or BSAI variant.
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 SAI63X45S FAQ
At a 0.5 MPa operating pressure, this 63 mm bore cylinder generates 1559 N of push force and 1402 N of pull force. At 0.7 MPa, the push force increases to 2182 N.
Yes. The SAI63X45-S is built to the ISO 15552 standard, making it dimensionally interchangeable with other ISO 15552 profile cylinders. Ensure you match the PT port thread and mounting footprint during installation.
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