Airtac SAI125 Standard Air Cylinder SAI125AX175S
The AirTAC Airtac SAI125 Standard Air Cylinder SAI125AX175S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 175mm 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
- Stroke175 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SAI125 Standard Air Cylinder SAI125AX175S
The AirTAC SAI125X175-S is a double-acting ISO 15552 profile cylinder engineered for heavy-duty automation. Delivering a robust 6136 N of push force at 0.5 MPa, this 125 mm bore unit is built to handle substantial loads across its 175 mm stroke. The integrated magnet allows seamless operation with CMSE and DMSE reed switches, fitting directly into the dual sensor grooves machined into the extruded aluminum barrel.
This specific configuration features a SUS420J2 stainless steel piston rod (material code A), offering excellent resistance to moisture and minor corrosion compared to standard carbon steel. It utilizes PT tapered port threads and includes adjustable air cushions at both ends to decelerate high-speed masses smoothly, operating efficiently at speeds of 30-500 mm/s.
Airtac SAI125 Standard Air Cylinder SAI125AX175S Technical Specifications
| Model | Airtac SAI125 Standard Air Cylinder SAI125AX175S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 175 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 SAI125AX175S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×175 | 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 SAI125AX175S Is Used
Heavy-Duty Stamping
Provides the 6136 N push force required to actuate large mechanical presses and form rigid metal components securely.
Automated Assembly Presses
Drives heavy-duty press-fit operations for large automotive bearings and industrial drive assemblies with precise 175 mm travel.
Pallet Lifting Stations
Lifts loaded pallets and heavy industrial totes within automated packaging lines, utilizing the integrated magnet for precise position tracking.
Is the Airtac SAI125 Standard Air Cylinder SAI125AX175S the Right Cylinder?
Selecting this 125 mm bore cylinder is ideal when an application demands over 6000 N of thrust at 0.5 MPa but does not require the massive 10053 N output of the 160 mm bore variant. The 175 mm stroke provides ample extension for medium-travel lifting and indexing tasks. Because it adheres strictly to ISO 15552 mounting dimensions, it serves as a direct drop-in replacement for other standard profile cylinders sharing this interface.
For applications requiring the rod to hold a load vertically without continuous air pressure, a standard SAI cylinder will drift or drop when air is exhausted. In those scenarios, specify the SAIL variant with an air-released lock or the BSAI bidirectional clamp-lock to secure the piston safely. Additionally, while 175 mm is a moderate stroke, always verify side-load conditions and use external guide rails if the mechanism experiences significant lateral forces.
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 SAI125AX175S FAQ
At a standard operating pressure of 0.5 MPa, this 125 mm bore cylinder generates 6136 N of push force and 5734 N of pull force. If pressure is increased to 0.7 MPa, the push force rises to 8590 N.
Yes. The SAI125X175-S is a true ISO 15552 (original ISO 6431) profile cylinder. Its standardized mounting interface and dimensions make it fully interchangeable with other ISO 15552 cylinders of the same bore size.
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