Airtac SAI125 Standard Air Cylinder SAI125AX175
The AirTAC Airtac SAI125 Standard Air Cylinder SAI125AX175 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 SAI125AX175
The AirTAC SAI125X175 is a double-acting ISO 15552 profile cylinder built for heavy-duty automation. It generates 6136 N of push force and 5734 N of pull force at 0.5 MPa, making it well-suited for high-thrust clamping and pressing over a 175 mm stroke. The extruded aluminum barrel design omits tie rods, providing a clean exterior that drops directly into standard ISO 15552 mounting interfaces.
This specific configuration features a SUS420J2 stainless steel piston rod (material code A) for enhanced corrosion resistance in humid or mildly chemically exposed environments. It uses PT tapered port threads and operates without a magnet. If your application requires position sensing, you would need the -S variant to accommodate CMSE or DMSE switches in the dual sensor grooves.
Airtac SAI125 Standard Air Cylinder SAI125AX175 Technical Specifications
| Model | Airtac SAI125 Standard Air Cylinder SAI125AX175 |
|---|---|
| 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 SAI125AX175
| 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 SAI125AX175 Is Used
Heavy-Duty Stamping
Provides the high thrust necessary for forming and stamping rigid materials in automated metalworking cells.
Automotive Assembly
Drives large robotic welding guns and heavy component positioning arms on vehicle production lines.
Pallet Diverting
Actuates heavy-duty lane dividers and sorting gates for large pallets in high-throughput logistics hubs.
Is the Airtac SAI125 Standard Air Cylinder SAI125AX175 the Right Cylinder?
Select this 125 mm bore when a 100 mm bore (offering 3927 N push at 0.5 MPa) is insufficient for your load, but you want to avoid stepping up to the massive 160 mm bore. Because this is a 175 mm stroke, side load is minimal, but always ensure the load is axially aligned to prevent premature rod seal wear. For applications requiring positional holding without continuous air pressure, note that the standard adjustable air cushions only decelerate the piston at stroke end and do not act as a lock; consider the SAIL or BSAI locking variants for fail-safe load holding.
To replace an existing ISO 15552 cylinder, match the 125 mm bore, 175 mm stroke, PT G1/2 port, and your required mounting accessories (such as CA clevis or TC trunnion). Since this unit lacks a magnet, confirm that external position sensing is not required.
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 SAI125AX175 FAQ
At 0.5 MPa operating pressure, this 125 mm bore cylinder provides 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 is dimensionally interchangeable per ISO 15552 standards. You can drop it in as a replacement for other ISO 15552 profile cylinders by matching the bore, stroke, and PT G1/2 port.
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