Airtac SAI125 Standard Air Cylinder SAI125AX220
The AirTAC Airtac SAI125 Standard Air Cylinder SAI125AX220 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 220mm stroke, G1/2 air ports and adjustable end cushioning. Its standardized mounting interface makes it a drop-in replacement for other ISO 15552 cylinders in automation lines.
- BoreØ125 mm
- Stroke220 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SAI125 Standard Air Cylinder SAI125AX220
The AirTAC SAI125X220 is a double-acting ISO 15552 profile cylinder offering a robust 6136N push force at 0.5 MPa. This 125mm bore and 220mm stroke configuration is built for heavy-duty machinery requiring substantial linear thrust.
This specific unit is configured with a SUS420J2 stainless steel piston rod (option A) for enhanced corrosion resistance in humid environments. It features tapered PT ports and lacks a standard magnet, meaning external position sensing is not supported without modification. As a genuine AirTAC component, it guarantees true ISO 15552 mounting interchangeability.
Airtac SAI125 Standard Air Cylinder SAI125AX220 Technical Specifications
| Model | Airtac SAI125 Standard Air Cylinder SAI125AX220 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 220 mm |
| Acting type | Double acting |
| Port size | G1/2 |
| Rod thread | M27×2 |
| 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 – 500 mm/s |
| Cushion | Adjustable, 40 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 (Ø125mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 6136 N | 5734 N |
| 0.7 MPa | 8590 N | — |
| Max (@1.0 MPa) | 1251 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac SAI125 Standard Air Cylinder SAI125AX220
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×220 | 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 SAI125 Standard Air Cylinder SAI125AX220 Is Used
Heavy Stamping
Provides the 6136N force required to actuate large mechanical stamping presses and heavy-duty forming tools.
Injection Molding
Drives substantial core pulls and heavy mold separation tasks on large injection molding machinery.
Pallet Handling
Pushes and positions fully loaded pallets along heavy-duty conveyor lines with reliable power.
Is the Airtac SAI125 Standard Air Cylinder SAI125AX220 the Right Cylinder?
Selecting this 125mm bore provides 6136N of thrust at 0.5 MPa; stepping down to a 100mm bore drops the output to 3927N, which may be insufficient for heavy loads. Conversely, a 160mm bore yields 10053N if your system requires an even larger safety margin.
Because this model has a 220mm stroke, it remains compact enough to avoid severe rod-bearing bending under moderate side loads. However, if your application requires holding a load vertically without constant air pressure, the standard SAI cannot maintain position; you must specify the SAIL variant with an air-released lock or the BSAI clamp-lock cylinder. Ensure your plumbing matches the G1/2 PT ports and utilize FA/FB flanges for secure mounting.
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 SAI125 Standard Air Cylinder SAI125AX220 FAQ
At 0.5 MPa operating pressure, this 125mm bore cylinder provides 6136N of push force and 5734N of pull force. It can reach up to 8590N push force at 0.7 MPa.
Yes, the SAI125X220 is dimensionally interchangeable per ISO 15552. You can drop it in to replace other ISO 15552 profile cylinders with the same 125mm bore and 220mm stroke, provided your system uses G1/2 ports.
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