Airtac SAI125 Standard Air Cylinder SAI125X105S
The AirTAC Airtac SAI125 Standard Air Cylinder SAI125X105S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 105mm 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
- Stroke105 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SAI125 Standard Air Cylinder SAI125X105S
The AirTAC SAI125X105-S is a double-acting ISO 15552 profile cylinder engineered for heavy-duty automation. Delivering a robust push force of 6136 N at 0.5 MPa, this 125 mm bore unit is built to handle substantial loads. The 105 mm stroke provides the precise extension needed for high-impact clamping and pressing operations.
Equipped with a magnetic piston (-S), this model seamlessly integrates with CMSE and DMSE reed switches via the dual sensor grooves on the extruded aluminum barrel. The standard configuration utilizes a durable carbon steel rod and PT tapered port threads, ensuring a rigid, leak-free connection in demanding pneumatic environments.
Airtac SAI125 Standard Air Cylinder SAI125X105S Technical Specifications
| Model | Airtac SAI125 Standard Air Cylinder SAI125X105S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 105 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 SAI125X105S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×105 | 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 SAI125X105S Is Used
Heavy-Duty Stamping
Provides the high thrust required for metal stamping and forming operations, utilizing adjustable cushions to absorb impact energy at stroke ends.
Automotive Assembly
Drives large clamping fixtures on automotive production lines, where the integrated magnet allows for precise mid-stroke position verification.
Pallet Handling
Lifts and positions heavy loaded pallets in automated packaging hubs, relying on the robust carbon steel rod to withstand significant mechanical stress.
Is the Airtac SAI125 Standard Air Cylinder SAI125X105S the Right Cylinder?
Select this 125 mm bore cylinder when 80 mm bore models (providing 2513 N push force at 0.5 MPa) lack the necessary thrust for your heavy machinery. The 105 mm stroke offers ample travel for forming and lifting tasks without the bulk of longer extensions. Because the piston is magnet-equipped, it is fully ready for position sensing out of the box.
For applications requiring the load to remain fixed during a complete air pressure loss or valve centering, note that the standard adjustable air cushion only decelerates the piston at stroke end and does not act as a brake. In such safety-critical setups, consider the SAIL variant with an air-released lock, or the BSAI bidirectional clamp-lock cylinder. This profile cylinder is dimensionally interchangeable per ISO 15552, allowing it to serve as a drop-in replacement for other ISO 15552 cylinders with matching 125 mm bore, 105 mm stroke, PT port, and mounting accessory dimensions.
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 SAI125X105S FAQ
At an operating pressure of 0.5 MPa, this 125 mm bore cylinder provides a push force of 6136 N and a pull force of 5734 N. At 0.7 MPa, the push force increases to 8590 N.
Yes, the SAI series is a true ISO 15552 profile cylinder. It is dimensionally interchangeable with other ISO 15552 cylinders, allowing it to function as a drop-in replacement provided the mounting interface, 125 mm bore, and PT port dimensions match your existing setup.
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