Airtac SAI125 Standard Air Cylinder SAI125X165S
The AirTAC Airtac SAI125 Standard Air Cylinder SAI125X165S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 165mm 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
- Stroke165 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SAI125 Standard Air Cylinder SAI125X165S
The AirTAC SAI125X165-S is a double-acting ISO 15552 profile cylinder engineered for heavy-duty automation. It provides a robust push force of 6136 N at 0.5 MPa, making it well-suited for high-thrust pressing and clamping tasks requiring a 165 mm stroke. This model features a standard carbon steel piston rod for structural rigidity under heavy loads.
Equipped with a magnetic piston (-S), this cylinder directly supports CMSE and DMSE reed or solid-state switches. The extruded aluminum barrel includes integrated sensor grooves on both sides for flexible mounting. Fluid compatibility is limited to filtered air, operating efficiently between -20 and +70 C.
Airtac SAI125 Standard Air Cylinder SAI125X165S Technical Specifications
| Model | Airtac SAI125 Standard Air Cylinder SAI125X165S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 165 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 SAI125X165S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×165 | 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 SAI125X165S Is Used
Heavy-Duty Pressing
Ideal for assembling bearings or bushings, utilizing the 6136 N push force at 0.5 MPa to seat components firmly.
Industrial Clamping
Secures large metal castings or heavy workpieces during machining operations, ensuring zero movement under cutting forces.
Pallet Halting
Acts as a robust stopper mechanism on high-mass conveyor lines, safely absorbing the impact of moving goods.
Is the Airtac SAI125 Standard Air Cylinder SAI125X165S the Right Cylinder?
Select this 125 mm bore when a 100 mm bore falls short, as the 100 mm yields 3927 N at 0.5 MPa compared to the 6136 N provided here. If your application requires even greater thrust, stepping up to a 160 mm bore offers 10053 N at the same pressure. The PT threaded G1/2 port ensures high airflow to maintain motion within the 30-500 mm/s speed range.
Because the 165 mm stroke is relatively short for this large bore, side-load stress on the rod bearing is minimal. However, this standard cylinder will drift if air pressure is lost; for applications requiring strict load holding without live pressure, consider the SAIL variant with an air-released lock or the BSAI 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 SAI125X165S FAQ
At an operating pressure of 0.5 MPa, this double-acting cylinder generates a push force of 6136 N and a pull force of 5734 N.
Yes, the SAI125X165-S is dimensionally interchangeable per ISO 15552 standards. It serves as a drop-in replacement for other ISO 15552 profile cylinders with matching mounting interfaces.
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