Airtac SAI63 Standard Cylinder SAI63AX125S
The AirTAC Airtac SAI63 Standard Cylinder SAI63AX125S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø63mm bore and 125mm 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
- Stroke125 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- CushionAdjustable, 36 mm
About the Airtac SAI63 Standard Cylinder SAI63AX125S
The AirTAC SAI63X125-S is a double-acting ISO 15552 profile cylinder engineered to deliver 1559 N of push force at 0.5 MPa. Its 125 mm stroke provides a compact yet powerful extension for mid-range automation tasks. Built with a genuine extruded aluminum barrel, this model is dimensionally interchangeable per ISO 15552 standards for seamless drop-in replacement.
This specific configuration includes a -S magnetic piston for use with CMSE and DMSE sensor switches, fitting neatly into the dual-side sensor grooves. It is also equipped with a SUS420J2 stainless steel rod (material code A), offering superior corrosion resistance compared to standard carbon steel, making it ideal for harsher industrial environments.
Airtac SAI63 Standard Cylinder SAI63AX125S Technical Specifications
| Model | Airtac SAI63 Standard Cylinder SAI63AX125S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø63 mm |
| Stroke | 125 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 SAI63AX125S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 63 | Bore size in mm. |
| ×125 | 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 SAI63AX125S Is Used
Machine Tool Clamping
Provides robust 1559 N clamping force at 0.5 MPa to secure metal workpieces during CNC machining operations.
Package Diverting
Uses the 125 mm stroke to push heavy cartons off a main conveyor belt into secondary packaging lanes.
Press Ejection
Retracts quickly at 30-800 mm/s to eject formed parts from hydraulic presses without delaying the cycle time.
Is the Airtac SAI63 Standard Cylinder SAI63AX125S the Right Cylinder?
Select this 63 mm bore when an application requires stepping up from a 50 mm cylinder (which provides 982 N at 0.5 MPa) to handle heavier payloads without jumping to the bulkier 80 mm size (2513 N). The 125 mm stroke is optimal for short to medium transfers. Because the stroke is under 300 mm, rod-bearing bending is minimal, though external guides should still be used for heavy off-center loads.
For exact mounting interchangeability, pair this cylinder's PT G3/8 ports and M16x1.5 rod thread with standard ISO 15552 accessories like FA flanges or TC trunnions. Note that the adjustable air cushions only decelerate the piston at stroke ends; if your process must hold a load securely without live air pressure, specify the SAIL variant with an air-released lock or utilize 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 SAI63AX125S FAQ
At a standard operating pressure of 0.5 MPa, 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 SAI63X125-S is a true ISO 15552 profile cylinder, meaning its mounting dimensions, G3/8 ports, and M16x1.5 rod thread are fully interchangeable with other ISO 15552 cylinders from various brands.
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