Airtac SAI125 Standard Air Cylinder SAI125AX225
The AirTAC Airtac SAI125 Standard Air Cylinder SAI125AX225 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 225mm 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
- Stroke225 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SAI125 Standard Air Cylinder SAI125AX225
The AirTAC SAI125X225 is a double-acting profile cylinder built to the ISO 15552 standard, making it a drop-in replacement for other ISO 15552 profile cylinders. Delivering a push force of 8590 N at 0.7 MPa, it is engineered for heavy-duty positioning tasks. This 225 mm stroke is a made-to-order length, exceeding the 1500 mm maximum standard stroke range, tailored for specific machinery layouts.
This model features a SUS420J2 stainless steel piston rod (option A) for enhanced durability against moisture and minor surface scuffing. The extruded aluminum barrel includes sensor grooves on both sides for direct mounting of CMSE or DMSE switches, though a magnet must be specified separately if position sensing is required. The pneumatic ports are PT tapered threads.
Airtac SAI125 Standard Air Cylinder SAI125AX225 Technical Specifications
| Model | Airtac SAI125 Standard Air Cylinder SAI125AX225 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 225 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 SAI125AX225
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×225 | 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 SAI125AX225 Is Used
Heavy Stamping
Provides the high thrust necessary for metal forming and heavy stamping operations in automated lines.
Pallet Transfer
Shifts heavy palletized goods between conveyor sections with reliable ISO 15552 mounting strength.
Large Clamp Jigs
Actuates massive clamping fixtures for automotive or structural component welding.
Is the Airtac SAI125 Standard Air Cylinder SAI125AX225 the Right Cylinder?
This 125 mm bore generates 8590 N of push force at 0.7 MPa; if your application requires less force, stepping down to an 80 mm bore yields 3518 N. Conversely, moving up to a 160 mm bore provides 14074 N for heavier payloads. Because this 225 mm stroke is a non-standard made-to-order length, ensure your system can accommodate the specific extended dimensions.
For any stroke length of 300 mm or greater, lateral side loads can cause rod-bearing bending and uneven wear; utilize an external guide or a guided cylinder to manage off-center loads. A standard SAI cylinder does not hold its position when air pressure is exhausted; the piston will drift. For fail-safe load holding, specify the SAIL variant with an air-released lock, or use an external rod lock.
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 SAI125AX225 FAQ
At an operating pressure of 0.7 MPa, this 125 mm bore cylinder generates 8590 N of push force and 5734 N of pull force. The maximum theoretical force at 1.0 MPa is 1251 kgf.
Yes, the SAI125X225 is dimensionally interchangeable per ISO 15552 profile cylinder standards. It shares the same mounting interface and PT G1/2 port threads, allowing it to serve as a drop-in replacement for other ISO 15552 profile cylinders.
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