Airtac SAI63 Standard Cylinder SAI63X625S
The AirTAC Airtac SAI63 Standard Cylinder SAI63X625S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø63mm bore and 625mm 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
- Stroke625 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- CushionAdjustable, 36 mm
About the Airtac SAI63 Standard Cylinder SAI63X625S
The AirTAC SAI63X625-S is a double-acting ISO 15552 profile cylinder engineered for demanding automated tasks. Operating at 0.5 MPa, it generates 1559 N of push force and 1402 N of pull force, making it well-suited for moderate-load handling across its 625 mm travel distance.
Because this configuration includes the -S option, it features an integrated magnet for use with CMSE or DMSE reed switches. The extruded aluminum barrel includes sensor grooves on both sides, allowing flexible top or bottom switch mounting without requiring additional brackets.
Airtac SAI63 Standard Cylinder SAI63X625S Technical Specifications
| Model | Airtac SAI63 Standard Cylinder SAI63X625S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø63 mm |
| Stroke | 625 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 SAI63X625S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 63 | Bore size in mm. |
| ×625 | 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 SAI63X625S Is Used
Material Transfer
Drives long-travel pushers on conveyor lines to transfer products between processing stations efficiently.
Pallet Handling
Actuates lifting and positioning mechanisms for medium-weight pallets in automated storage systems.
Assembly Automation
Provides the extended reach necessary for pressing or locating components along extended machine axes.
Is the Airtac SAI63 Standard Cylinder SAI63X625S the Right Cylinder?
This 625 mm stroke exceeds standard catalog increments but remains within the 1500 mm maximum limit for the 63 mm bore, requiring made-to-order fulfillment. If your application demands less force, stepping down to a 50 mm bore yields 982 N at 0.5 MPa, while upgrading to an 80 mm bore provides 2513 N.
With a 625 mm stroke, the unsupported piston rod is highly susceptible to bending under side loads. Utilizing an external linear guide or a guided cylinder carriage is strongly recommended to prevent premature rod-bearing wear. Furthermore, this standard double-acting cylinder relies on adjustable air cushions to decelerate the piston at stroke ends and will not maintain its position if air pressure is lost; for load-holding requirements, consider the SAIL or BSAI locking variants. It uses a G3/8 PT port and M16x1.5 rod thread.
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 SAI63X625S FAQ
At an operating pressure of 0.5 MPa, the SAI63X625-S generates a push force of 1559 N and a pull force of 1402 N.
Yes, the SAI63X625-S is dimensionally interchangeable with other ISO 15552 profile cylinders, allowing for a direct drop-in replacement using standard mounting accessories like FA flanges or TC trunnions.
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