Airtac SAI125 Standard Air Cylinder SAI125X290
The AirTAC Airtac SAI125 Standard Air Cylinder SAI125X290 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 290mm 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
- Stroke290 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SAI125 Standard Air Cylinder SAI125X290
The AirTAC SAI125X290 is a double-acting ISO 15552 profile cylinder engineered for heavy-duty automation. It provides a robust push force of 6136 N and a pull force of 5734 N at 0.5 MPa, making it well-suited for moving substantial masses over its 290 mm stroke.
This model incorporates a standard carbon steel piston rod and PT tapered port threads. While it lacks a magnet for proximity sensing, the extruded aluminum barrel features dual-sided sensor grooves ready for CMSE or DMSE switches if a magnet-equipped variant is required later.
Airtac SAI125 Standard Air Cylinder SAI125X290 Technical Specifications
| Model | Airtac SAI125 Standard Air Cylinder SAI125X290 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 290 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 SAI125X290
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×290 | 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 SAI125X290 Is Used
Heavy Stamping
Drives large metal forming and stamping presses requiring 6136 N of push force at 0.5 MPa.
Automotive Assembly
Actuates heavy jigs and positions chassis components along the 290 mm stroke.
Pallet Handling
Pushes loaded pallets or lifts heavy fixtures in high-throughput material transport systems.
Is the Airtac SAI125 Standard Air Cylinder SAI125X290 the Right Cylinder?
With a 290 mm stroke on a large 125 mm bore, the unsupported rod is highly susceptible to bending under side loads. To prevent premature seal wear and rod-bearing failure, pair this cylinder with an external guide rail or select a fully guided cylinder to handle lateral forces.
If your application requires fewer than 5734 N of pull force at 0.5 MPa, stepping down to the 100 mm bore (which yields 3681 N pull) can save space and air consumption. Remember that a standard SAI relies entirely on live air pressure to hold its load; if the system exhausts, the piston will drift. For fail-safe position holding, consider the SAIL (air-released lock) or BSAI (clamp-lock) variants.
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 SAI125X290 FAQ
At 0.5 MPa, this cylinder provides 6136 N of push force and 5734 N of pull force. At 0.7 MPa, the push force increases to 8590 N.
Yes, the SAI125X290 is a genuine ISO 15552 profile cylinder. It is dimensionally interchangeable with other ISO 15552 cylinders, allowing it to serve as a drop-in replacement for equivalent bore and stroke models.
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