Airtac SAI125 Standard Air Cylinder SAI125X175
The AirTAC Airtac SAI125 Standard Air Cylinder SAI125X175 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 SAI125X175
The AirTAC SAI125X175 is a double-acting ISO 15552 profile cylinder offering a robust 6136N push force at 0.5MPa and 8590N at 0.7MPa. Its 175mm stroke is ideal for heavy material handling, while the extruded aluminum barrel omits tie rods for a clean exterior. The piston rod uses standard carbon steel for high tensile strength.
Unlike basic actuators, this model features integrated sensor grooves on both sides of the barrel, allowing direct mounting of CMSE or DMSE switches when a magnet is specified. For environments exceeding standard temperatures, the seals can be upgraded to Viton (H) for superior heat resistance.
Airtac SAI125 Standard Air Cylinder SAI125X175 Technical Specifications
| Model | Airtac SAI125 Standard Air Cylinder SAI125X175 |
|---|---|
| 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 SAI125X175
| 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 SAI125X175 Is Used
Heavy Stamping
Provides the necessary 8590N thrust at 0.7MPa to actuate large forming presses and heavy-duty riveting stations.
Pallet Diverting
Drives robust diverters on high-capacity roller conveyors, moving fully loaded pallets with precision.
Automotive Assembly
Handles heavy chassis components and positions large subframes during automated vehicle manufacturing.
Is the Airtac SAI125 Standard Air Cylinder SAI125X175 the Right Cylinder?
Selecting this 125mm bore makes sense when 80mm (2513N at 0.5MPa) lacks the thrust for high-inertia loads, but you want to avoid the larger footprint of a 160mm cylinder. The PT tapered G1/2 porting handles the necessary high airflow to maintain dynamic response within the 30-500mm/s speed range.
If your application requires holding a load vertically without continuous air pressure, the standard adjustable air cushions will not prevent dropping. You must specify the SAIL variant with an air-released lock, the BSAI clamp-lock cylinder, or use an external pilot-operated check valve. As a true ISO 15552 profile cylinder, it serves as a drop-in replacement for any matching 125mm bore, 175mm stroke, G1/2 port interface unit.
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 SAI125X175 FAQ
At 0.5MPa, it provides 6136N of push force and 5734N of pull force. At 0.7MPa, the push force increases to 8590N.
Yes, the SAI125X175 is dimensionally interchangeable per ISO 15552. It matches standard 125mm bore, 175mm stroke, and G1/2 port mounting interfaces.
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