Airtac SAI125 Standard Air Cylinder SAI125AX180S
The AirTAC Airtac SAI125 Standard Air Cylinder SAI125AX180S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 180mm 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
- Stroke180 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SAI125 Standard Air Cylinder SAI125AX180S
The AirTAC SAI125X180-S is a double-acting ISO 15552 profile cylinder built for heavy-duty automation. It delivers a push force of 6136 N and a pull force of 5734 N at 0.5 MPa, making the 180 mm stroke well-suited for high-thrust clamping and heavy workpiece manipulation. The extruded aluminum barrel design omits tie rods, providing a clean exterior that resists contamination.
This specific configuration includes a magnet for position sensing (-S) and is factory-equipped with an SUS420J2 stainless steel rod (material code A) for superior corrosion resistance. The dual sensor grooves on the barrel accept CMSE or DMSE switches, while the PT tapered port threads ensure a reliable, leak-free pneumatic connection.
Airtac SAI125 Standard Air Cylinder SAI125AX180S Technical Specifications
| Model | Airtac SAI125 Standard Air Cylinder SAI125AX180S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 180 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 SAI125AX180S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×180 | 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 SAI125AX180S Is Used
Automotive Stamping
Provides the robust 6136 N push force required to form and seat heavy sheet metal panels in automotive assembly lines.
Heavy Press Operations
Handles substantial pressing and forming tasks where the 125 mm bore and 180 mm stroke deliver consistent high-impact force.
Pallet Diverting
Actuates heavy-duty pallet routing gates, using the integrated magnet and DMSE sensors to confirm full stroke extension.
Is the Airtac SAI125 Standard Air Cylinder SAI125AX180S the Right Cylinder?
Select this 125 mm bore when a 100 mm bore (delivering 3927 N push at 0.5 MPa) is insufficient for your load, but you want to avoid the larger 160 mm class. Because this 180 mm stroke is under 300 mm, side-load stress on the rod bearing is minimal, though external guides are still recommended for heavy lateral loads. To mount this cylinder, use standard ISO 15552 accessories like FA flanges or TC trunnions.
Note that a standard SAI cylinder relies on live air pressure to hold its position; it will drift if pressure is lost. The adjustable air cushions at both ends only decelerate the piston near stroke end and do not function as a brake. If your application requires true fail-safe load holding, consider the SAIL variant with an air-released lock or the BSAI bidirectional clamp-lock cylinder.
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 SAI125AX180S 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. If pressure is increased to 0.7 MPa, the push force reaches 8590 N.
Yes, the SAI125X180-S is a true ISO 15552 profile cylinder, making its mounting interface and center distances dimensionally interchangeable with other ISO 15552 cylinders. It uses a G1/2 port and accepts standard ISO 15552 mounting accessories.
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