Airtac SAI125 Standard Air Cylinder SAI125AX170
The AirTAC Airtac SAI125 Standard Air Cylinder SAI125AX170 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 170mm 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
- Stroke170 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SAI125 Standard Air Cylinder SAI125AX170
The AirTAC SAI125X170 is a double-acting ISO 15552 profile cylinder built for heavy-duty automation. It provides a substantial push force of 6136 N and a pull force of 5734 N at 0.5 MPa, making it well-suited for moving large masses over its 170 mm stroke. The extruded aluminum barrel design omits tie-rods for a clean exterior while maintaining strict dimensional interchangeability with other ISO 15552 actuators.
This specific configuration utilizes a SUS420J2 stainless steel piston rod (material code A) for enhanced resistance against corrosion and surface wear. Fluid connections use PT tapered threading, and the unit operates efficiently within a speed range of 30-500 mm/s. For applications requiring end-position holding under pressure loss, consider pairing this actuator with the SAIL air-released lock variant.
Airtac SAI125 Standard Air Cylinder SAI125AX170 Technical Specifications
| Model | Airtac SAI125 Standard Air Cylinder SAI125AX170 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 170 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 SAI125AX170
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×170 | 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 SAI125AX170 Is Used
Heavy Stamping Press
Provides the high 6136 N push force at 0.5 MPa required to actuate large mechanical stamping presses and heavy forming dies.
Injection Mold Ejection
Drives robust ejection systems for large plastic injection molds, utilizing its SUS420J2 stainless steel rod to withstand repetitive impact loads.
Pallet Diverting
Actuates heavy-duty pallet diverters and sorting gates on high-capacity manufacturing lines where lower bore cylinders cannot provide sufficient thrust.
Is the Airtac SAI125 Standard Air Cylinder SAI125AX170 the Right Cylinder?
Select this 125 mm bore when a 100 mm bore falls short—yielding 8590 N at 0.7 MPa compared to the smaller bore's 5497 N. If your application requires even less force, stepping down to an 80 mm bore offers 3518 N at 0.7 MPa, which may prevent excessive energy consumption. Because the 170 mm stroke is relatively short for this bore size, side-load stress on the rod bearing is minimal compared to longer strokes.
This model is a true ISO 15552 profile cylinder, meaning it serves as a direct dimensional drop-in replacement for any standard cylinder matching this interface. To match an existing setup, ensure you specify the PT port, the appropriate mounting accessory (such as FA flange or TC trunnion), and whether a magnet (-S) is needed for position sensing.
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 SAI125AX170 FAQ
At 0.5 MPa operating pressure, this 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 SAI125X170 is manufactured to the ISO 15552 standard, meaning its mounting dimensions and profile are fully interchangeable with other ISO 15552 cylinders of the same bore size, regardless of the original brand.
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